Iowa Interactive USDA Plant Hardiness Zone Map

Based on the 1990 USDA Hardiness Zone Map, this interactive version covers the state of Iowa which ranges from USDA Zone 4a to USDA Zone 6a.

1990 USDA Hardiness Zone Maps for Neighboring States and Provinces

Related Iowa Maps:

List of 1990 Hardiness Zones for Cities in Iowa

Location	Hardiness Zone
Ackley	Zone 5a: -20°F to -15°F
Ackworth	Zone 5a: -20°F to -15°F
Adair	Zone 5a: -20°F to -15°F
Adel	Zone 5a: -20°F to -15°F
Afton	Zone 5a: -20°F to -15°F
Agency	Zone 5a: -20°F to -15°F
Ainsworth	Zone 5a: -20°F to -15°F
Akron	Zone 4b: -25°F to -20°F
Albert City	Zone 4b: -25°F to -20°F
Albia	Zone 5a: -20°F to -15°F
Albion	Zone 4b: -25°F to -20°F
Alburnett	Zone 4b: -25°F to -20°F
Alden	Zone 5a: -20°F to -15°F
Alexander	Zone 4b: -25°F to -20°F
Algona	Zone 4b: -25°F to -20°F
Alleman	Zone 5a: -20°F to -15°F
Allendorf	Zone 4b: -25°F to -20°F
Allerton	Zone 5a: -20°F to -15°F
Allison	Zone 4b: -25°F to -20°F
Alta	Zone 4b: -25°F to -20°F
Alta Vista	Zone 4b: -25°F to -20°F
Alton	Zone 4b: -25°F to -20°F
Altoona	Zone 5a: -20°F to -15°F
Alvord	Zone 4b: -25°F to -20°F
Amana	Zone 5a: -20°F to -15°F
Ames	Zone 5a: -20°F to -15°F
Anamosa	Zone 4b: -25°F to -20°F
Anderson	Zone 5a: -20°F to -15°F
Andover	Zone 5a: -20°F to -15°F
Andrew	Zone 5a: -20°F to -15°F
Anita	Zone 5a: -20°F to -15°F
Ankeny	Zone 5a: -20°F to -15°F
Anthon	Zone 4b: -25°F to -20°F
Aplington	Zone 4b: -25°F to -20°F
Arcadia	Zone 4b: -25°F to -20°F
Archer	Zone 4b: -25°F to -20°F
Aredale	Zone 4b: -25°F to -20°F
Argyle	Zone 5a: -20°F to -15°F
Arion	Zone 5a: -20°F to -15°F
Arispe	Zone 5a: -20°F to -15°F
Arlington	Zone 4a: -30°F to -25°F
Armstrong	Zone 4b: -25°F to -20°F
Arnolds Park	Zone 4b: -25°F to -20°F
Arthur	Zone 4b: -25°F to -20°F
Asbury	Zone 4b: -25°F to -20°F
Ashton	Zone 4b: -25°F to -20°F
Aspinwall	Zone 5a: -20°F to -15°F
Atalissa	Zone 5a: -20°F to -15°F
Athelstan	Zone 5a: -20°F to -15°F
Atkins	Zone 5a: -20°F to -15°F
Atlantic	Zone 4b: -25°F to -20°F
Auburn	Zone 4b: -25°F to -20°F
Audubon	Zone 5a: -20°F to -15°F
Aurelia	Zone 4b: -25°F to -20°F
Aurora	Zone 4b: -25°F to -20°F
Austinville	Zone 4b: -25°F to -20°F
Avoca	Zone 4b: -25°F to -20°F
Ayrshire	Zone 4b: -25°F to -20°F
Badger	Zone 4b: -25°F to -20°F
Bagley	Zone 5a: -20°F to -15°F
Baldwin	Zone 4b: -25°F to -20°F
Balltown	Zone 4b: -25°F to -20°F
Bancroft	Zone 4b: -25°F to -20°F
Bankston	Zone 4b: -25°F to -20°F
Barnes City	Zone 5a: -20°F to -15°F
Barnum	Zone 4b: -25°F to -20°F
Bartlett	Zone 5a: -20°F to -15°F
Bassett	Zone 4b: -25°F to -20°F
Batavia	Zone 5a: -20°F to -15°F
Battle Creek	Zone 4b: -25°F to -20°F
Baxter	Zone 5a: -20°F to -15°F
Bayard	Zone 5a: -20°F to -15°F
Beacon	Zone 5a: -20°F to -15°F
Beaconsfield	Zone 5a: -20°F to -15°F
Beaman	Zone 4b: -25°F to -20°F
Beaver	Zone 4b: -25°F to -20°F
Beaverdale	Zone 5a: -20°F to -15°F
Bedford	Zone 4b: -25°F to -20°F
Belle Plaine	Zone 5a: -20°F to -15°F
Bellevue	Zone 5a: -20°F to -15°F
Belmond	Zone 4b: -25°F to -20°F
Bennett	Zone 5a: -20°F to -15°F
Bentley	Zone 4b: -25°F to -20°F
Benton	Zone 5a: -20°F to -15°F
Berkley	Zone 4b: -25°F to -20°F
Bernard	Zone 4b: -25°F to -20°F
Bertram	Zone 5a: -20°F to -15°F
Berwick	Zone 5a: -20°F to -15°F
Bettendorf	Zone 5a: -20°F to -15°F
Bevington	Zone 4b: -25°F to -20°F
Birmingham	Zone 5a: -20°F to -15°F
Blairsburg	Zone 4b: -25°F to -20°F
Blairstown	Zone 5a: -20°F to -15°F
Blakesburg	Zone 5a: -20°F to -15°F
Blanchard	Zone 5a: -20°F to -15°F
Blencoe	Zone 5a: -20°F to -15°F
Blockton	Zone 5a: -20°F to -15°F
Bloomfield	Zone 5a: -20°F to -15°F
Blue Grass	Zone 5a: -20°F to -15°F
Bode	Zone 4b: -25°F to -20°F
Bolan	Zone 4b: -25°F to -20°F
Bonaparte	Zone 5a: -20°F to -15°F
Bondurant	Zone 5a: -20°F to -15°F
Boone	Zone 4b: -25°F to -20°F
Booneville	Zone 5a: -20°F to -15°F
Bouton	Zone 4b: -25°F to -20°F
Boxholm	Zone 4b: -25°F to -20°F
Boyden	Zone 4b: -25°F to -20°F
Boyer	Zone 4b: -25°F to -20°F
Braddyville	Zone 4b: -25°F to -20°F
Bradford	Zone 4b: -25°F to -20°F
Bradgate	Zone 4b: -25°F to -20°F
Brandon	Zone 4b: -25°F to -20°F
Brayton	Zone 5a: -20°F to -15°F
Breda	Zone 4b: -25°F to -20°F
Bridgewater	Zone 5a: -20°F to -15°F
Brighton	Zone 5a: -20°F to -15°F
Bristow	Zone 4b: -25°F to -20°F
Britt	Zone 4b: -25°F to -20°F
Bronson	Zone 4b: -25°F to -20°F
Brooklyn	Zone 5a: -20°F to -15°F
Brunsville	Zone 4b: -25°F to -20°F
Bryant	Zone 5a: -20°F to -15°F
Buck Grove	Zone 5a: -20°F to -15°F
Buckeye	Zone 5a: -20°F to -15°F
Buckingham	Zone 4b: -25°F to -20°F
Buffalo	Zone 5a: -20°F to -15°F
Buffalo Center	Zone 4b: -25°F to -20°F
Burchinal	Zone 4b: -25°F to -20°F
Burlington	Zone 5a: -20°F to -15°F
Burnside	Zone 4b: -25°F to -20°F
Burr Oak	Zone 4b: -25°F to -20°F
Burt	Zone 4b: -25°F to -20°F
Bussey	Zone 5a: -20°F to -15°F
Calamus	Zone 5a: -20°F to -15°F
California Junction	Zone 5a: -20°F to -15°F
Callender	Zone 4b: -25°F to -20°F
Calmar	Zone 4b: -25°F to -20°F
Calumet	Zone 4b: -25°F to -20°F
Camanche	Zone 5a: -20°F to -15°F
Cambridge	Zone 5a: -20°F to -15°F
Cantril	Zone 5a: -20°F to -15°F
Carbon	Zone 4b: -25°F to -20°F
Carlisle	Zone 5a: -20°F to -15°F
Carpenter	Zone 4b: -25°F to -20°F
Carroll	Zone 4b: -25°F to -20°F
Carson	Zone 4b: -25°F to -20°F
Carter Lake	Zone 5a: -20°F to -15°F
Cascade	Zone 4b: -25°F to -20°F
Casey	Zone 5a: -20°F to -15°F
Castalia	Zone 4b: -25°F to -20°F
Castana	Zone 4b: -25°F to -20°F
Cedar	Zone 5a: -20°F to -15°F
Cedar Falls	Zone 4b: -25°F to -20°F
Cedar Rapids	Zone 5a: -20°F to -15°F
Center Junction	Zone 4b: -25°F to -20°F
Center Point	Zone 4b: -25°F to -20°F
Centerville	Zone 5a: -20°F to -15°F
Central City	Zone 4b: -25°F to -20°F
Centralia	Zone 4b: -25°F to -20°F
Chapin	Zone 4b: -25°F to -20°F
Chariton	Zone 5a: -20°F to -15°F
Charles City	Zone 4b: -25°F to -20°F
Charlotte	Zone 5a: -20°F to -15°F
Charter Oak	Zone 5a: -20°F to -15°F
Chatsworth	Zone 4b: -25°F to -20°F
Chelsea	Zone 4b: -25°F to -20°F
Cherokee	Zone 4b: -25°F to -20°F
Chester	Zone 4b: -25°F to -20°F
Chillicothe	Zone 5a: -20°F to -15°F
Churdan	Zone 4b: -25°F to -20°F
Cincinnati	Zone 5a: -20°F to -15°F
Clare	Zone 4b: -25°F to -20°F
Clarence	Zone 5a: -20°F to -15°F
Clarinda	Zone 4b: -25°F to -20°F
Clarion	Zone 4b: -25°F to -20°F
Clarksville	Zone 4b: -25°F to -20°F
Clayton	Zone 4b: -25°F to -20°F
Clear Lake	Zone 4b: -25°F to -20°F
Clearfield	Zone 5a: -20°F to -15°F
Cleghorn	Zone 4b: -25°F to -20°F
Clemons	Zone 5a: -20°F to -15°F
Clermont	Zone 4b: -25°F to -20°F
Climbing Hill	Zone 4b: -25°F to -20°F
Clinton	Zone 5a: -20°F to -15°F
Clinton Stock Yards	Zone 5a: -20°F to -15°F
Clio	Zone 5a: -20°F to -15°F
Clive	Zone 5a: -20°F to -15°F
Clutier	Zone 4b: -25°F to -20°F
Coalville	Zone 4b: -25°F to -20°F
Coburg	Zone 5a: -20°F to -15°F
Coggon	Zone 4b: -25°F to -20°F
Coin	Zone 5a: -20°F to -15°F
Colesburg	Zone 4b: -25°F to -20°F
Colfax	Zone 5a: -20°F to -15°F
College Springs	Zone 4b: -25°F to -20°F
Collins	Zone 5a: -20°F to -15°F
Colo	Zone 5a: -20°F to -15°F
Columbia	Zone 5a: -20°F to -15°F
Columbus City	Zone 5a: -20°F to -15°F
Columbus Jct	Zone 5a: -20°F to -15°F
Columbus Junction	Zone 5a: -20°F to -15°F
Colwell	Zone 4b: -25°F to -20°F
Conesville	Zone 5a: -20°F to -15°F
Conrad	Zone 4b: -25°F to -20°F
Conroy	Zone 5a: -20°F to -15°F
Conway	Zone 5a: -20°F to -15°F
Coon Rapids	Zone 5a: -20°F to -15°F
Cooper	Zone 5a: -20°F to -15°F
Coppock	Zone 5a: -20°F to -15°F
Coralville	Zone 5a: -20°F to -15°F
Corley	Zone 4b: -25°F to -20°F
Corning	Zone 4b: -25°F to -20°F
Correctionville	Zone 4b: -25°F to -20°F
Corwith	Zone 4b: -25°F to -20°F
Corydon	Zone 5a: -20°F to -15°F
Cotter	Zone 5a: -20°F to -15°F
Coulter	Zone 4b: -25°F to -20°F
Council Bluffs	Zone 4b: -25°F to -20°F
Craig	Zone 4b: -25°F to -20°F
Crawfordsville	Zone 5a: -20°F to -15°F
Crescent	Zone 4b: -25°F to -20°F
Cresco	Zone 4b: -25°F to -20°F
Creston	Zone 5a: -20°F to -15°F
Cromwell	Zone 5a: -20°F to -15°F
Crystal Lake	Zone 4b: -25°F to -20°F
Cumberland	Zone 4b: -25°F to -20°F
Cumming	Zone 4b: -25°F to -20°F
Curlew	Zone 4b: -25°F to -20°F
Cushing	Zone 4b: -25°F to -20°F
Cylinder	Zone 4b: -25°F to -20°F
Dakota City	Zone 4b: -25°F to -20°F
Dallas	Zone 5a: -20°F to -15°F
Dallas Center	Zone 5a: -20°F to -15°F
Dana	Zone 4b: -25°F to -20°F
Danbury	Zone 4b: -25°F to -20°F
Danville	Zone 5a: -20°F to -15°F
Davenport	Zone 5a: -20°F to -15°F
Davis City	Zone 5a: -20°F to -15°F
Dawson	Zone 4b: -25°F to -20°F
Dayton	Zone 4b: -25°F to -20°F
De Soto	Zone 5a: -20°F to -15°F
De Witt	Zone 5a: -20°F to -15°F
Decatur	Zone 5a: -20°F to -15°F
Decorah	Zone 4b: -25°F to -20°F
Dedham	Zone 5a: -20°F to -15°F
Deep River	Zone 5a: -20°F to -15°F
Defiance	Zone 4b: -25°F to -20°F
Delaware	Zone 4b: -25°F to -20°F
Delhi	Zone 4b: -25°F to -20°F
Delmar	Zone 5a: -20°F to -15°F
Deloit	Zone 5a: -20°F to -15°F
Delphos	Zone 5a: -20°F to -15°F
Delta	Zone 5a: -20°F to -15°F
Denison	Zone 5a: -20°F to -15°F
Denmark	Zone 5a: -20°F to -15°F
Denver	Zone 4b: -25°F to -20°F
Derby	Zone 5a: -20°F to -15°F
Des Moines	Zone 5a: -20°F to -15°F
Dewar	Zone 4b: -25°F to -20°F
Dexter	Zone 5a: -20°F to -15°F
Diagonal	Zone 5a: -20°F to -15°F
Dickens	Zone 4b: -25°F to -20°F
Dike	Zone 4b: -25°F to -20°F
Dixon	Zone 5a: -20°F to -15°F
Dolliver	Zone 4b: -25°F to -20°F
Donahue	Zone 5a: -20°F to -15°F
Donnan	Zone 4b: -25°F to -20°F
Donnellson	Zone 5a: -20°F to -15°F
Doon	Zone 4b: -25°F to -20°F
Dorchester	Zone 4b: -25°F to -20°F
Douds	Zone 5a: -20°F to -15°F
Dougherty	Zone 4b: -25°F to -20°F
Dow City	Zone 5a: -20°F to -15°F
Dows	Zone 4b: -25°F to -20°F
Drakesville	Zone 5a: -20°F to -15°F
Dubuque	Zone 5a: -20°F to -15°F
Dumont	Zone 4b: -25°F to -20°F
Duncan	Zone 4b: -25°F to -20°F
Duncombe	Zone 4b: -25°F to -20°F
Dundee	Zone 4b: -25°F to -20°F
Dunkerton	Zone 4b: -25°F to -20°F
Dunlap	Zone 4b: -25°F to -20°F
Durango	Zone 4b: -25°F to -20°F
Durant	Zone 5a: -20°F to -15°F
Dyersville	Zone 4b: -25°F to -20°F
Dysart	Zone 4b: -25°F to -20°F
Eagle Grove	Zone 4b: -25°F to -20°F
Earlham	Zone 5a: -20°F to -15°F
Earling	Zone 4b: -25°F to -20°F
Earlville	Zone 4b: -25°F to -20°F
Early	Zone 4b: -25°F to -20°F
East Amana	Zone 5a: -20°F to -15°F
East Peru	Zone 5a: -20°F to -15°F
East Pleasant Plain	Zone 5a: -20°F to -15°F
Eddyville	Zone 5a: -20°F to -15°F
Edgewood	Zone 4b: -25°F to -20°F
Elberon	Zone 4b: -25°F to -20°F
Eldon	Zone 5a: -20°F to -15°F
Eldora	Zone 5a: -20°F to -15°F
Eldridge	Zone 5a: -20°F to -15°F
Elgin	Zone 4b: -25°F to -20°F
Elk Horn	Zone 4b: -25°F to -20°F
Elk Run Heights	Zone 4b: -25°F to -20°F
Elkader	Zone 4b: -25°F to -20°F
Elkhart	Zone 5a: -20°F to -15°F
Elkport	Zone 4b: -25°F to -20°F
Elliott	Zone 4b: -25°F to -20°F
Ellston	Zone 5a: -20°F to -15°F
Ellsworth	Zone 5a: -20°F to -15°F
Elma	Zone 4b: -25°F to -20°F
Elwood	Zone 4b: -25°F to -20°F
Ely	Zone 5a: -20°F to -15°F
Emerson	Zone 4b: -25°F to -20°F
Emmetsburg	Zone 4b: -25°F to -20°F
Epworth	Zone 4b: -25°F to -20°F
Essex	Zone 5a: -20°F to -15°F
Estherville	Zone 4b: -25°F to -20°F
Evansdale	Zone 4b: -25°F to -20°F
Everly	Zone 4b: -25°F to -20°F
Exira	Zone 5a: -20°F to -15°F
Exline	Zone 5a: -20°F to -15°F
Fairbank	Zone 4b: -25°F to -20°F
Fairfax	Zone 5a: -20°F to -15°F
Fairfield	Zone 5a: -20°F to -15°F
Farley	Zone 4b: -25°F to -20°F
Farmersburg	Zone 4b: -25°F to -20°F
Farmington	Zone 5a: -20°F to -15°F
Farnhamville	Zone 4b: -25°F to -20°F
Farragut	Zone 5a: -20°F to -15°F
Fayette	Zone 4a: -30°F to -25°F
Fenton	Zone 4b: -25°F to -20°F
Ferguson	Zone 4b: -25°F to -20°F
Fertile	Zone 4b: -25°F to -20°F
Floris	Zone 5a: -20°F to -15°F
Floyd	Zone 4b: -25°F to -20°F
Fonda	Zone 4b: -25°F to -20°F
Fontanelle	Zone 5a: -20°F to -15°F
Forest City	Zone 4b: -25°F to -20°F
Fort Atkinson	Zone 4b: -25°F to -20°F
Fort Dodge	Zone 4b: -25°F to -20°F
Fort Madison	Zone 5a: -20°F to -15°F
Fostoria	Zone 4b: -25°F to -20°F
Franklin	Zone 5a: -20°F to -15°F
Fraser	Zone 4b: -25°F to -20°F
Fredericksburg	Zone 4b: -25°F to -20°F
Frederika	Zone 4b: -25°F to -20°F
Fredonia	Zone 5a: -20°F to -15°F
Fremont	Zone 5a: -20°F to -15°F
Fruitland	Zone 5a: -20°F to -15°F
Frytown	Zone 5a: -20°F to -15°F
Galt	Zone 4b: -25°F to -20°F
Galva	Zone 4b: -25°F to -20°F
Garber	Zone 4b: -25°F to -20°F
Garden City	Zone 5a: -20°F to -15°F
Garden Grove	Zone 5a: -20°F to -15°F
Garnavillo	Zone 4b: -25°F to -20°F
Garner	Zone 4b: -25°F to -20°F
Garrison	Zone 4b: -25°F to -20°F
Garwin	Zone 4b: -25°F to -20°F
Geneva	Zone 4b: -25°F to -20°F
George	Zone 4b: -25°F to -20°F
Gibson	Zone 5a: -20°F to -15°F
Gifford	Zone 5a: -20°F to -15°F
Gilbert	Zone 5a: -20°F to -15°F
Gilbertville	Zone 4b: -25°F to -20°F
Gillett Grove	Zone 4b: -25°F to -20°F
Gilman	Zone 4b: -25°F to -20°F
Gilmore City	Zone 4b: -25°F to -20°F
Gladbrook	Zone 4b: -25°F to -20°F
Glenwood	Zone 4b: -25°F to -20°F
Glidden	Zone 4b: -25°F to -20°F
Goldfield	Zone 4b: -25°F to -20°F
Goodell	Zone 4b: -25°F to -20°F
Goose Lake	Zone 5a: -20°F to -15°F
Gowrie	Zone 4b: -25°F to -20°F
Graettinger	Zone 4b: -25°F to -20°F
Graf	Zone 4b: -25°F to -20°F
Grafton	Zone 4b: -25°F to -20°F
Grand Junction	Zone 4b: -25°F to -20°F
Grand Mound	Zone 5a: -20°F to -15°F
Grand River	Zone 5a: -20°F to -15°F
Grandview	Zone 5a: -20°F to -15°F
Granger	Zone 5a: -20°F to -15°F
Grant	Zone 4b: -25°F to -20°F
Granville	Zone 4b: -25°F to -20°F
Gravity	Zone 4b: -25°F to -20°F
Gray	Zone 5a: -20°F to -15°F
Greeley	Zone 4b: -25°F to -20°F
Green Island	Zone 5a: -20°F to -15°F
Green Mountain	Zone 4b: -25°F to -20°F
Greene	Zone 4b: -25°F to -20°F
Greenfield	Zone 5a: -20°F to -15°F
Greenville	Zone 4b: -25°F to -20°F
Grimes	Zone 5a: -20°F to -15°F
Grinnell	Zone 4b: -25°F to -20°F
Griswold	Zone 4b: -25°F to -20°F
Grundy Center	Zone 4b: -25°F to -20°F
Gruver	Zone 4b: -25°F to -20°F
Guernsey	Zone 5a: -20°F to -15°F
Guthrie Center	Zone 5a: -20°F to -15°F
Guttenberg	Zone 4b: -25°F to -20°F
Halbur	Zone 4b: -25°F to -20°F
Hamburg	Zone 5a: -20°F to -15°F
Hamilton	Zone 5a: -20°F to -15°F
Hamlin	Zone 5a: -20°F to -15°F
Hampton	Zone 4b: -25°F to -20°F
Hancock	Zone 4b: -25°F to -20°F
Hanlontown	Zone 4b: -25°F to -20°F
Hansell	Zone 4b: -25°F to -20°F
Harcourt	Zone 4b: -25°F to -20°F
Hardy	Zone 4b: -25°F to -20°F
Harlan	Zone 4b: -25°F to -20°F
Harper	Zone 5a: -20°F to -15°F
Harpers Ferry	Zone 4b: -25°F to -20°F
Harris	Zone 4b: -25°F to -20°F
Hartford	Zone 5a: -20°F to -15°F
Hartley	Zone 4b: -25°F to -20°F
Hartwick	Zone 5a: -20°F to -15°F
Harvey	Zone 5a: -20°F to -15°F
Hastings	Zone 4b: -25°F to -20°F
Havelock	Zone 4b: -25°F to -20°F
Haverhill	Zone 4b: -25°F to -20°F
Hawarden	Zone 4b: -25°F to -20°F
Hawkeye	Zone 4b: -25°F to -20°F
Hayesville	Zone 5a: -20°F to -15°F
Hayfield	Zone 4b: -25°F to -20°F
Hazleton	Zone 4b: -25°F to -20°F
Hedrick	Zone 5a: -20°F to -15°F
Henderson	Zone 4b: -25°F to -20°F
Hepburn	Zone 4b: -25°F to -20°F
Hiawatha	Zone 5a: -20°F to -15°F
High Amana	Zone 5a: -20°F to -15°F
Highlandville	Zone 4b: -25°F to -20°F
Hills	Zone 5a: -20°F to -15°F
Hillsboro	Zone 5a: -20°F to -15°F
Hinton	Zone 4b: -25°F to -20°F
Holland	Zone 5a: -20°F to -15°F
Holstein	Zone 4b: -25°F to -20°F
Holy Cross	Zone 4b: -25°F to -20°F
Homestead	Zone 5a: -20°F to -15°F
Honey Creek	Zone 4b: -25°F to -20°F
Hopkinton	Zone 4b: -25°F to -20°F
Hornick	Zone 4b: -25°F to -20°F
Hospers	Zone 4b: -25°F to -20°F
Houghton	Zone 5a: -20°F to -15°F
Hubbard	Zone 5a: -20°F to -15°F
Hudson	Zone 4b: -25°F to -20°F
Hull	Zone 4b: -25°F to -20°F
Humboldt	Zone 4b: -25°F to -20°F
Humeston	Zone 5a: -20°F to -15°F
Hutchins	Zone 4b: -25°F to -20°F
Huxley	Zone 5a: -20°F to -15°F
Ida Grove	Zone 4b: -25°F to -20°F
Imogene	Zone 5a: -20°F to -15°F
Independence	Zone 4b: -25°F to -20°F
Indianola	Zone 4b: -25°F to -20°F
Inwood	Zone 4b: -25°F to -20°F
Ionia	Zone 4b: -25°F to -20°F
Iowa City	Zone 5a: -20°F to -15°F
Iowa Falls	Zone 5a: -20°F to -15°F
Ira	Zone 5a: -20°F to -15°F
Ireton	Zone 4b: -25°F to -20°F
Irvington	Zone 4b: -25°F to -20°F
Irwin	Zone 5a: -20°F to -15°F
Jackson Junction	Zone 4b: -25°F to -20°F
Jacksonville	Zone 4b: -25°F to -20°F
Jamaica	Zone 5a: -20°F to -15°F
Janesville	Zone 4b: -25°F to -20°F
Jefferson	Zone 5a: -20°F to -15°F
Jesup	Zone 4b: -25°F to -20°F
Jewell	Zone 4b: -25°F to -20°F
Johnston	Zone 5a: -20°F to -15°F
Joice	Zone 4b: -25°F to -20°F
Jolley	Zone 4b: -25°F to -20°F
Kalona	Zone 5a: -20°F to -15°F
Kamrar	Zone 4b: -25°F to -20°F
Kanawha	Zone 4b: -25°F to -20°F
Kellerton	Zone 5a: -20°F to -15°F
Kelley	Zone 5a: -20°F to -15°F
Kellogg	Zone 4b: -25°F to -20°F
Kensett	Zone 4b: -25°F to -20°F
Kent	Zone 5a: -20°F to -15°F
Keokuk	Zone 5a: -20°F to -15°F
Keomah Village	Zone 5a: -20°F to -15°F
Keosauqua	Zone 5a: -20°F to -15°F
Keota	Zone 5a: -20°F to -15°F
Kesley	Zone 4b: -25°F to -20°F
Keswick	Zone 5a: -20°F to -15°F
Keystone	Zone 5a: -20°F to -15°F
Killduff	Zone 5a: -20°F to -15°F
Kimballton	Zone 4b: -25°F to -20°F
Kingsley	Zone 4b: -25°F to -20°F
Kinross	Zone 5a: -20°F to -15°F
Kirkman	Zone 4b: -25°F to -20°F
Kirkville	Zone 5a: -20°F to -15°F
Kiron	Zone 4b: -25°F to -20°F
Klemme	Zone 4b: -25°F to -20°F
Knierim	Zone 4b: -25°F to -20°F
Knoxville	Zone 5a: -20°F to -15°F
La Motte	Zone 5a: -20°F to -15°F
La Porte City	Zone 4b: -25°F to -20°F
Lacona	Zone 5a: -20°F to -15°F
Ladora	Zone 5a: -20°F to -15°F
Lake City	Zone 4b: -25°F to -20°F
Lake Mills	Zone 4b: -25°F to -20°F
Lake Park	Zone 4b: -25°F to -20°F
Lake View	Zone 4b: -25°F to -20°F
Lakeside	Zone 4b: -25°F to -20°F
Lakota	Zone 4b: -25°F to -20°F
Lambs Grove	Zone 5a: -20°F to -15°F
Lamoni	Zone 5a: -20°F to -15°F
Lamont	Zone 4b: -25°F to -20°F
Lanesboro	Zone 4b: -25°F to -20°F
Langworthy	Zone 4b: -25°F to -20°F
Lansing	Zone 4b: -25°F to -20°F
Larchwood	Zone 4b: -25°F to -20°F
Larrabee	Zone 4b: -25°F to -20°F
Latimer	Zone 4b: -25°F to -20°F
Laurel	Zone 4b: -25°F to -20°F
Laurens	Zone 4b: -25°F to -20°F
Lawler	Zone 4b: -25°F to -20°F
Lawton	Zone 4b: -25°F to -20°F
Le Claire	Zone 5a: -20°F to -15°F
Le Grand	Zone 4b: -25°F to -20°F
Le Mars	Zone 4b: -25°F to -20°F
Le Roy	Zone 5a: -20°F to -15°F
Leando	Zone 5a: -20°F to -15°F
Ledyard	Zone 4b: -25°F to -20°F
Lehigh	Zone 4b: -25°F to -20°F
Leighton	Zone 5a: -20°F to -15°F
Leland	Zone 4b: -25°F to -20°F
Lenox	Zone 5a: -20°F to -15°F
Leon	Zone 5a: -20°F to -15°F
Lester	Zone 4b: -25°F to -20°F
Letts	Zone 5a: -20°F to -15°F
Lewis	Zone 4b: -25°F to -20°F
Liberty Center	Zone 5a: -20°F to -15°F
Libertyville	Zone 5a: -20°F to -15°F
Lidderdale	Zone 4b: -25°F to -20°F
Lime Springs	Zone 4b: -25°F to -20°F
Lincoln	Zone 4b: -25°F to -20°F
Linden	Zone 5a: -20°F to -15°F
Lineville	Zone 5a: -20°F to -15°F
Linn Grove	Zone 4b: -25°F to -20°F
Lisbon	Zone 5a: -20°F to -15°F
Liscomb	Zone 5a: -20°F to -15°F
Little Cedar	Zone 4b: -25°F to -20°F
Little Rock	Zone 4b: -25°F to -20°F
Little Sioux	Zone 5a: -20°F to -15°F
Littleport	Zone 4b: -25°F to -20°F
Livermore	Zone 4b: -25°F to -20°F
Lockridge	Zone 5a: -20°F to -15°F
Logan	Zone 4b: -25°F to -20°F
Lohrville	Zone 4b: -25°F to -20°F
Lone Rock	Zone 4b: -25°F to -20°F
Lone Tree	Zone 5a: -20°F to -15°F
Long Grove	Zone 5a: -20°F to -15°F
Lorimor	Zone 5a: -20°F to -15°F
Lost Nation	Zone 4b: -25°F to -20°F
Loveland	Zone 4b: -25°F to -20°F
Lovilia	Zone 5a: -20°F to -15°F
Low Moor	Zone 5a: -20°F to -15°F
Lowden	Zone 5a: -20°F to -15°F
Lu Verne	Zone 4b: -25°F to -20°F
Luana	Zone 4b: -25°F to -20°F
Lucas	Zone 5a: -20°F to -15°F
Luther	Zone 4b: -25°F to -20°F
Luxemburg	Zone 4b: -25°F to -20°F
Luzerne	Zone 5a: -20°F to -15°F
Lynnville	Zone 5a: -20°F to -15°F
Lytton	Zone 4b: -25°F to -20°F
Macedonia	Zone 4b: -25°F to -20°F
Macksburg	Zone 5a: -20°F to -15°F
Madrid	Zone 5a: -20°F to -15°F
Magnolia	Zone 4b: -25°F to -20°F
Maharishi Vedic City	Zone 5a: -20°F to -15°F
Malcom	Zone 5a: -20°F to -15°F
Mallard	Zone 4b: -25°F to -20°F
Maloy	Zone 5a: -20°F to -15°F
Malvern	Zone 4b: -25°F to -20°F
Manchester	Zone 4b: -25°F to -20°F
Manilla	Zone 5a: -20°F to -15°F
Manly	Zone 4b: -25°F to -20°F
Manning	Zone 5a: -20°F to -15°F
Manson	Zone 4b: -25°F to -20°F
Mapleton	Zone 4b: -25°F to -20°F
Maquoketa	Zone 4b: -25°F to -20°F
Marathon	Zone 4b: -25°F to -20°F
Marble Rock	Zone 4b: -25°F to -20°F
Marcus	Zone 4b: -25°F to -20°F
Marengo	Zone 5a: -20°F to -15°F
Marion	Zone 5a: -20°F to -15°F
Marne	Zone 4b: -25°F to -20°F
Marquette	Zone 4b: -25°F to -20°F
Marshalltown	Zone 4b: -25°F to -20°F
Martelle	Zone 4b: -25°F to -20°F
Martensdale	Zone 4b: -25°F to -20°F
Martinsburg	Zone 5a: -20°F to -15°F
Marysville	Zone 5a: -20°F to -15°F
Mason City	Zone 4b: -25°F to -20°F
Masonville	Zone 4b: -25°F to -20°F
Massena	Zone 4b: -25°F to -20°F
Matlock	Zone 4b: -25°F to -20°F
Maurice	Zone 4b: -25°F to -20°F
Maxwell	Zone 5a: -20°F to -15°F
May City	Zone 4b: -25°F to -20°F
Maynard	Zone 4a: -30°F to -25°F
Maysville	Zone 5a: -20°F to -15°F
McCallsburg	Zone 5a: -20°F to -15°F
McCausland	Zone 5a: -20°F to -15°F
McClelland	Zone 4b: -25°F to -20°F
McGregor	Zone 4b: -25°F to -20°F
McIntire	Zone 4b: -25°F to -20°F
Mechanicsville	Zone 5a: -20°F to -15°F
Mediapolis	Zone 5a: -20°F to -15°F
Melbourne	Zone 4b: -25°F to -20°F
Melcher	Zone 5a: -20°F to -15°F
Melrose	Zone 5a: -20°F to -15°F
Melvin	Zone 4b: -25°F to -20°F
Menlo	Zone 5a: -20°F to -15°F
Meriden	Zone 4b: -25°F to -20°F
Merrill	Zone 4b: -25°F to -20°F
Meservey	Zone 4b: -25°F to -20°F
Meyer	Zone 4b: -25°F to -20°F
Middle Amana	Zone 5a: -20°F to -15°F
Middletown	Zone 5a: -20°F to -15°F
Miles	Zone 5a: -20°F to -15°F
Milford	Zone 4b: -25°F to -20°F
Miller	Zone 4b: -25°F to -20°F
Millersburg	Zone 5a: -20°F to -15°F
Millerton	Zone 5a: -20°F to -15°F
Millville	Zone 4b: -25°F to -20°F
Milo	Zone 5a: -20°F to -15°F
Milton	Zone 5a: -20°F to -15°F
Minburn	Zone 5a: -20°F to -15°F
Minden	Zone 4b: -25°F to -20°F
Mineola	Zone 4b: -25°F to -20°F
Mingo	Zone 5a: -20°F to -15°F
Missouri Valley	Zone 4b: -25°F to -20°F
Mitchell	Zone 4b: -25°F to -20°F
Mitchellville	Zone 5a: -20°F to -15°F
Modale	Zone 5a: -20°F to -15°F
Mona	Zone 4b: -25°F to -20°F
Mondamin	Zone 5a: -20°F to -15°F
Moneta	Zone 4b: -25°F to -20°F
Monmouth	Zone 4b: -25°F to -20°F
Monona	Zone 4b: -25°F to -20°F
Monroe	Zone 5a: -20°F to -15°F
Montezuma	Zone 5a: -20°F to -15°F
Monticello	Zone 4b: -25°F to -20°F
Montour	Zone 4b: -25°F to -20°F
Montpelier	Zone 5a: -20°F to -15°F
Montrose	Zone 5a: -20°F to -15°F
Moorhead	Zone 5a: -20°F to -15°F
Moorland	Zone 4b: -25°F to -20°F
Moravia	Zone 5a: -20°F to -15°F
Morley	Zone 4b: -25°F to -20°F
Morning Sun	Zone 5a: -20°F to -15°F
Morrison	Zone 4b: -25°F to -20°F
Moscow	Zone 5a: -20°F to -15°F
Moulton	Zone 5a: -20°F to -15°F
Mount Auburn	Zone 4b: -25°F to -20°F
Mount Ayr	Zone 5a: -20°F to -15°F
Mount Pleasant	Zone 5a: -20°F to -15°F
Mount Sterling	Zone 5a: -20°F to -15°F
Mount Union	Zone 5a: -20°F to -15°F
Mount Vernon	Zone 5a: -20°F to -15°F
Moville	Zone 4b: -25°F to -20°F
Murray	Zone 5a: -20°F to -15°F
Muscatine	Zone 5a: -20°F to -15°F
Mystic	Zone 5a: -20°F to -15°F
Nashua	Zone 4b: -25°F to -20°F
Nemaha	Zone 4b: -25°F to -20°F
Neola	Zone 4b: -25°F to -20°F
Nevada	Zone 5a: -20°F to -15°F
New Albin	Zone 4b: -25°F to -20°F
New Hampton	Zone 4b: -25°F to -20°F
New Hartford	Zone 4b: -25°F to -20°F
New Haven	Zone 4b: -25°F to -20°F
New Liberty	Zone 5a: -20°F to -15°F
New London	Zone 5a: -20°F to -15°F
New Market	Zone 4b: -25°F to -20°F
New Providence	Zone 5a: -20°F to -15°F
New Sharon	Zone 5a: -20°F to -15°F
New Vienna	Zone 4b: -25°F to -20°F
New Virginia	Zone 5a: -20°F to -15°F
Newell	Zone 4b: -25°F to -20°F
Newhall	Zone 5a: -20°F to -15°F
Newton	Zone 5a: -20°F to -15°F
Nichols	Zone 5a: -20°F to -15°F
Nodaway	Zone 4b: -25°F to -20°F
Nora Springs	Zone 4b: -25°F to -20°F
North Buena Vista	Zone 4b: -25°F to -20°F
North English	Zone 5a: -20°F to -15°F
North Liberty	Zone 5a: -20°F to -15°F
North Washington	Zone 4b: -25°F to -20°F
Northboro	Zone 5a: -20°F to -15°F
Northwood	Zone 4b: -25°F to -20°F
Norwalk	Zone 4b: -25°F to -20°F
Norway	Zone 5a: -20°F to -15°F
Numa	Zone 5a: -20°F to -15°F
Oakdale	Zone 5a: -20°F to -15°F
Oakland	Zone 4b: -25°F to -20°F
Oakland Acres	Zone 4b: -25°F to -20°F
Oakville	Zone 5a: -20°F to -15°F
Ocheyedan	Zone 4b: -25°F to -20°F
Odebolt	Zone 4b: -25°F to -20°F
Oelwein	Zone 4b: -25°F to -20°F
Ogden	Zone 4b: -25°F to -20°F
Okoboji	Zone 4b: -25°F to -20°F
Olds	Zone 5a: -20°F to -15°F
Olin	Zone 4b: -25°F to -20°F
Ollie	Zone 5a: -20°F to -15°F
Onawa	Zone 4b: -25°F to -20°F
Oneida	Zone 4b: -25°F to -20°F
Onslow	Zone 4b: -25°F to -20°F
Oran	Zone 4b: -25°F to -20°F
Orange City	Zone 4b: -25°F to -20°F
Orchard	Zone 4b: -25°F to -20°F
Orient	Zone 5a: -20°F to -15°F
Orleans	Zone 4b: -25°F to -20°F
Osage	Zone 4b: -25°F to -20°F
Osceola	Zone 5a: -20°F to -15°F
Oskaloosa	Zone 5a: -20°F to -15°F
Ossian	Zone 4b: -25°F to -20°F
Osterdock	Zone 4b: -25°F to -20°F
Otho	Zone 4b: -25°F to -20°F
Otley	Zone 5a: -20°F to -15°F
Oto	Zone 4b: -25°F to -20°F
Otranto	Zone 4b: -25°F to -20°F
Ottosen	Zone 4b: -25°F to -20°F
Ottumwa	Zone 5a: -20°F to -15°F
Owasa	Zone 5a: -20°F to -15°F
Oxford	Zone 5a: -20°F to -15°F
Oxford Junction	Zone 4b: -25°F to -20°F
Oyens	Zone 4b: -25°F to -20°F
Pacific Junction	Zone 4b: -25°F to -20°F
Packwood	Zone 5a: -20°F to -15°F
Palmer	Zone 4b: -25°F to -20°F
Palo	Zone 5a: -20°F to -15°F
Panama	Zone 4b: -25°F to -20°F
Panora	Zone 5a: -20°F to -15°F
Panorama Park	Zone 5a: -20°F to -15°F
Park View	Zone 5a: -20°F to -15°F
Parkersburg	Zone 4b: -25°F to -20°F
Parnell	Zone 5a: -20°F to -15°F
Paton	Zone 4b: -25°F to -20°F
Patterson	Zone 5a: -20°F to -15°F
Paullina	Zone 4b: -25°F to -20°F
Pella	Zone 5a: -20°F to -15°F
Peosta	Zone 4b: -25°F to -20°F
Percival	Zone 5a: -20°F to -15°F
Perry	Zone 4b: -25°F to -20°F
Persia	Zone 4b: -25°F to -20°F
Peru	Zone 5a: -20°F to -15°F
Peterson	Zone 4b: -25°F to -20°F
Pierson	Zone 4b: -25°F to -20°F
Pilot Grove	Zone 5a: -20°F to -15°F
Pilot Mound	Zone 4b: -25°F to -20°F
Pioneer	Zone 4b: -25°F to -20°F
Pisgah	Zone 4b: -25°F to -20°F
Plainfield	Zone 4b: -25°F to -20°F
Plano	Zone 5a: -20°F to -15°F
Pleasant Hill	Zone 5a: -20°F to -15°F
Pleasant Plain	Zone 5a: -20°F to -15°F
Pleasant Valley	Zone 5a: -20°F to -15°F
Pleasanton	Zone 5a: -20°F to -15°F
Pleasantville	Zone 5a: -20°F to -15°F
Plover	Zone 4b: -25°F to -20°F
Plymouth	Zone 4b: -25°F to -20°F
Pocahontas	Zone 4b: -25°F to -20°F
Polk City	Zone 5a: -20°F to -15°F
Pomeroy	Zone 4b: -25°F to -20°F
Popejoy	Zone 4b: -25°F to -20°F
Portland	Zone 4b: -25°F to -20°F
Portsmouth	Zone 4b: -25°F to -20°F
Postville	Zone 4b: -25°F to -20°F
Prairie City	Zone 5a: -20°F to -15°F
Prairieburg	Zone 4b: -25°F to -20°F
Prescott	Zone 5a: -20°F to -15°F
Preston	Zone 5a: -20°F to -15°F
Primghar	Zone 4b: -25°F to -20°F
Princeton	Zone 5a: -20°F to -15°F
Prole	Zone 4b: -25°F to -20°F
Promise City	Zone 5a: -20°F to -15°F
Protivin	Zone 4b: -25°F to -20°F
Pulaski	Zone 5a: -20°F to -15°F
Quasqueton	Zone 4b: -25°F to -20°F
Quimby	Zone 4b: -25°F to -20°F
Radcliffe	Zone 5a: -20°F to -15°F
Rake	Zone 4b: -25°F to -20°F
Ralston	Zone 5a: -20°F to -15°F
Randalia	Zone 4a: -30°F to -25°F
Randall	Zone 5a: -20°F to -15°F
Randolph	Zone 4b: -25°F to -20°F
Rathbun	Zone 5a: -20°F to -15°F
Raymond	Zone 4b: -25°F to -20°F
Readlyn	Zone 4b: -25°F to -20°F
Reasnor	Zone 5a: -20°F to -15°F
Red Oak	Zone 4b: -25°F to -20°F
Redding	Zone 5a: -20°F to -15°F
Redfield	Zone 5a: -20°F to -15°F
Reinbeck	Zone 4b: -25°F to -20°F
Rembrandt	Zone 4b: -25°F to -20°F
Remsen	Zone 4b: -25°F to -20°F
Renwick	Zone 4b: -25°F to -20°F
Rhodes	Zone 5a: -20°F to -15°F
Riceville	Zone 4b: -25°F to -20°F
Richland	Zone 5a: -20°F to -15°F
Rickardsville	Zone 4b: -25°F to -20°F
Ricketts	Zone 4b: -25°F to -20°F
Ridgeway	Zone 4b: -25°F to -20°F
Rinard	Zone 4b: -25°F to -20°F
Ringsted	Zone 4b: -25°F to -20°F
Rippey	Zone 4b: -25°F to -20°F
River Sioux	Zone 5a: -20°F to -15°F
Riverdale	Zone 5a: -20°F to -15°F
Riverside	Zone 5a: -20°F to -15°F
Riverton	Zone 5a: -20°F to -15°F
Robins	Zone 4b: -25°F to -20°F
Rochester	Zone 5a: -20°F to -15°F
Rock Falls	Zone 4b: -25°F to -20°F
Rock Rapids	Zone 4b: -25°F to -20°F
Rock Valley	Zone 4b: -25°F to -20°F
Rockford	Zone 4b: -25°F to -20°F
Rockwell	Zone 4b: -25°F to -20°F
Rockwell City	Zone 4b: -25°F to -20°F
Rodman	Zone 4b: -25°F to -20°F
Rodney	Zone 4b: -25°F to -20°F
Roland	Zone 5a: -20°F to -15°F
Rolfe	Zone 4b: -25°F to -20°F
Rome	Zone 5a: -20°F to -15°F
Rose Hill	Zone 5a: -20°F to -15°F
Roseville	Zone 4b: -25°F to -20°F
Rossie	Zone 4b: -25°F to -20°F
Rowan	Zone 4b: -25°F to -20°F
Rowley	Zone 4b: -25°F to -20°F
Royal	Zone 4b: -25°F to -20°F
Rudd	Zone 4b: -25°F to -20°F
Runnells	Zone 5a: -20°F to -15°F
Russell	Zone 5a: -20°F to -15°F
Ruthven	Zone 4b: -25°F to -20°F
Rutland	Zone 4b: -25°F to -20°F
Ryan	Zone 4b: -25°F to -20°F
Sabula	Zone 5a: -20°F to -15°F
Sac City	Zone 4b: -25°F to -20°F
Sageville	Zone 5a: -20°F to -15°F
Saint Ansgar	Zone 4b: -25°F to -20°F
Saint Anthony	Zone 5a: -20°F to -15°F
Saint Benedict	Zone 4b: -25°F to -20°F
Saint Charles	Zone 5a: -20°F to -15°F
Saint Donatus	Zone 5a: -20°F to -15°F
Saint Joseph	Zone 4b: -25°F to -20°F
Saint Lucas	Zone 4b: -25°F to -20°F
Saint Marys	Zone 4b: -25°F to -20°F
Saint Olaf	Zone 4b: -25°F to -20°F
Saint Paul	Zone 5a: -20°F to -15°F
Salem	Zone 5a: -20°F to -15°F
Salix	Zone 4b: -25°F to -20°F
Sanborn	Zone 4b: -25°F to -20°F
Sandyville	Zone 5a: -20°F to -15°F
Saylorville	Zone 5a: -20°F to -15°F
Scarville	Zone 4b: -25°F to -20°F
Schaller	Zone 4b: -25°F to -20°F
Schleswig	Zone 4b: -25°F to -20°F
Scranton	Zone 5a: -20°F to -15°F
Searsboro	Zone 5a: -20°F to -15°F
Selma	Zone 5a: -20°F to -15°F
Sergeant Bluff	Zone 4b: -25°F to -20°F
Sexton	Zone 4b: -25°F to -20°F
Seymour	Zone 5a: -20°F to -15°F
Shambaugh	Zone 4b: -25°F to -20°F
Shannon City	Zone 5a: -20°F to -15°F
Sharpsburg	Zone 5a: -20°F to -15°F
Sheffield	Zone 4b: -25°F to -20°F
Shelby	Zone 4b: -25°F to -20°F
Sheldahl	Zone 5a: -20°F to -15°F
Sheldon	Zone 4b: -25°F to -20°F
Shell Rock	Zone 4b: -25°F to -20°F
Shellsburg	Zone 4b: -25°F to -20°F
Shenandoah	Zone 5a: -20°F to -15°F
Sherrill	Zone 4b: -25°F to -20°F
Shueyville	Zone 5a: -20°F to -15°F
Sibley	Zone 4b: -25°F to -20°F
Sidney	Zone 5a: -20°F to -15°F
Sigourney	Zone 5a: -20°F to -15°F
Silver City	Zone 4b: -25°F to -20°F
Sioux Center	Zone 4b: -25°F to -20°F
Sioux City	Zone 4b: -25°F to -20°F
Sioux Rapids	Zone 4b: -25°F to -20°F
Slater	Zone 5a: -20°F to -15°F
Sloan	Zone 4b: -25°F to -20°F
Smithland	Zone 4b: -25°F to -20°F
Soldier	Zone 5a: -20°F to -15°F
Solon	Zone 5a: -20°F to -15°F
Somers	Zone 4b: -25°F to -20°F
South Amana	Zone 5a: -20°F to -15°F
South English	Zone 5a: -20°F to -15°F
Spencer	Zone 4b: -25°F to -20°F
Sperry	Zone 5a: -20°F to -15°F
Spillville	Zone 4b: -25°F to -20°F
Spirit Lake	Zone 4b: -25°F to -20°F
Spragueville	Zone 5a: -20°F to -15°F
Spring Hill	Zone 4b: -25°F to -20°F
Springbrook	Zone 5a: -20°F to -15°F
Springville	Zone 4b: -25°F to -20°F
Stacyville	Zone 4b: -25°F to -20°F
Stanhope	Zone 4b: -25°F to -20°F
Stanley	Zone 4b: -25°F to -20°F
Stanton	Zone 4b: -25°F to -20°F
Stanwood	Zone 5a: -20°F to -15°F
State Center	Zone 5a: -20°F to -15°F
Steamboat Rock	Zone 5a: -20°F to -15°F
Stockport	Zone 5a: -20°F to -15°F
Stockton	Zone 5a: -20°F to -15°F
Stone City	Zone 4b: -25°F to -20°F
Storm Lake	Zone 4b: -25°F to -20°F
Story City	Zone 5a: -20°F to -15°F
Stout	Zone 4b: -25°F to -20°F
Stratford	Zone 4b: -25°F to -20°F
Strawberry Point	Zone 4b: -25°F to -20°F
Struble	Zone 4b: -25°F to -20°F
Stuart	Zone 5a: -20°F to -15°F
Sully	Zone 5a: -20°F to -15°F
Sumner	Zone 4b: -25°F to -20°F
Sundown Mountain Ski Area	Zone 4b: -25°F to -20°F
Superior	Zone 4b: -25°F to -20°F
Sutherland	Zone 4b: -25°F to -20°F
Swaledale	Zone 4b: -25°F to -20°F
Swan	Zone 5a: -20°F to -15°F
Swea City	Zone 4b: -25°F to -20°F
Swedesburg	Zone 5a: -20°F to -15°F
Swisher	Zone 5a: -20°F to -15°F
Tabor	Zone 4b: -25°F to -20°F
Tama	Zone 4b: -25°F to -20°F
Teeds Grove	Zone 5a: -20°F to -15°F
Templeton	Zone 5a: -20°F to -15°F
Tennant	Zone 4b: -25°F to -20°F
Terril	Zone 4b: -25°F to -20°F
Thayer	Zone 5a: -20°F to -15°F
Thompson	Zone 4b: -25°F to -20°F
Thor	Zone 4b: -25°F to -20°F
Thornburg	Zone 5a: -20°F to -15°F
Thornton	Zone 4b: -25°F to -20°F
Thurman	Zone 5a: -20°F to -15°F
Tiffin	Zone 5a: -20°F to -15°F
Tingley	Zone 5a: -20°F to -15°F
Tipton	Zone 5a: -20°F to -15°F
Titonka	Zone 4b: -25°F to -20°F
Toddville	Zone 4b: -25°F to -20°F
Toeterville	Zone 4b: -25°F to -20°F
Toledo	Zone 4b: -25°F to -20°F
Toronto	Zone 4b: -25°F to -20°F
Tracy	Zone 5a: -20°F to -15°F
Traer	Zone 4b: -25°F to -20°F
Treynor	Zone 4b: -25°F to -20°F
Tripoli	Zone 4b: -25°F to -20°F
Troy Mills	Zone 4b: -25°F to -20°F
Truesdale	Zone 4b: -25°F to -20°F
Truro	Zone 5a: -20°F to -15°F
Turin	Zone 4b: -25°F to -20°F
Udell	Zone 5a: -20°F to -15°F
Underwood	Zone 4b: -25°F to -20°F
Union	Zone 5a: -20°F to -15°F
Unionville	Zone 5a: -20°F to -15°F
University Heights	Zone 5a: -20°F to -15°F
University Park	Zone 5a: -20°F to -15°F
Urbana	Zone 4b: -25°F to -20°F
Urbandale	Zone 5a: -20°F to -15°F
Ute	Zone 5a: -20°F to -15°F
Vail	Zone 5a: -20°F to -15°F
Valeria	Zone 5a: -20°F to -15°F
Van Horne	Zone 5a: -20°F to -15°F
Van Meter	Zone 5a: -20°F to -15°F
Van Wert	Zone 5a: -20°F to -15°F
Varina	Zone 4b: -25°F to -20°F
Ventura	Zone 4b: -25°F to -20°F
Victor	Zone 5a: -20°F to -15°F
Villisca	Zone 4b: -25°F to -20°F
Vincent	Zone 4b: -25°F to -20°F
Vining	Zone 4b: -25°F to -20°F
Vinton	Zone 4b: -25°F to -20°F
Viola	Zone 4b: -25°F to -20°F
Volga	Zone 4b: -25°F to -20°F
Wadena	Zone 4a: -30°F to -25°F
Wahpeton	Zone 4b: -25°F to -20°F
Walcott	Zone 5a: -20°F to -15°F
Walford	Zone 5a: -20°F to -15°F
Walker	Zone 4b: -25°F to -20°F
Wall Lake	Zone 4b: -25°F to -20°F
Wallingford	Zone 4b: -25°F to -20°F
Walnut	Zone 4b: -25°F to -20°F
Wapello	Zone 5a: -20°F to -15°F
Washburn	Zone 4b: -25°F to -20°F
Washington	Zone 5a: -20°F to -15°F
Washta	Zone 4b: -25°F to -20°F
Waterloo	Zone 4b: -25°F to -20°F
Waterville	Zone 4b: -25°F to -20°F
Watkins	Zone 5a: -20°F to -15°F
Waucoma	Zone 4b: -25°F to -20°F
Waukee	Zone 5a: -20°F to -15°F
Waukon	Zone 4b: -25°F to -20°F
Waverly	Zone 4b: -25°F to -20°F
Wayland	Zone 5a: -20°F to -15°F
Webb	Zone 4b: -25°F to -20°F
Webster	Zone 5a: -20°F to -15°F
Webster City	Zone 4b: -25°F to -20°F
Weldon	Zone 5a: -20°F to -15°F
Wellman	Zone 5a: -20°F to -15°F
Wellsburg	Zone 5a: -20°F to -15°F
Weltman	Zone 5a: -20°F to -15°F
Welton	Zone 5a: -20°F to -15°F
Wesley	Zone 4b: -25°F to -20°F
West Amana	Zone 5a: -20°F to -15°F
West Bend	Zone 4b: -25°F to -20°F
West Branch	Zone 5a: -20°F to -15°F
West Burlington	Zone 5a: -20°F to -15°F
West Chester	Zone 5a: -20°F to -15°F
West Des Moines	Zone 5a: -20°F to -15°F
West Grove	Zone 5a: -20°F to -15°F
West Liberty	Zone 5a: -20°F to -15°F
West Okoboji	Zone 4b: -25°F to -20°F
West Point	Zone 5a: -20°F to -15°F
West Union	Zone 4b: -25°F to -20°F
Westfield	Zone 4b: -25°F to -20°F
Westgate	Zone 4b: -25°F to -20°F
Weston	Zone 4b: -25°F to -20°F
Westphalia	Zone 4b: -25°F to -20°F
Westside	Zone 4b: -25°F to -20°F
Westwood	Zone 5a: -20°F to -15°F
Wever	Zone 5a: -20°F to -15°F
What Cheer	Zone 5a: -20°F to -15°F
Wheatland	Zone 5a: -20°F to -15°F
Whiting	Zone 4b: -25°F to -20°F
Whittemore	Zone 4b: -25°F to -20°F
Whitten	Zone 5a: -20°F to -15°F
Willey	Zone 4b: -25°F to -20°F
Williams	Zone 4b: -25°F to -20°F
Williamsburg	Zone 5a: -20°F to -15°F
Williamson	Zone 5a: -20°F to -15°F
Wilton	Zone 5a: -20°F to -15°F
Windsor Heights	Zone 5a: -20°F to -15°F
Winfield	Zone 5a: -20°F to -15°F
Winterset	Zone 5a: -20°F to -15°F
Winthrop	Zone 4b: -25°F to -20°F
Wiota	Zone 4b: -25°F to -20°F
Woden	Zone 4b: -25°F to -20°F
Woodbine	Zone 4b: -25°F to -20°F
Woodburn	Zone 5a: -20°F to -15°F
Woodward	Zone 4b: -25°F to -20°F
Woolstock	Zone 4b: -25°F to -20°F
Worthington	Zone 4b: -25°F to -20°F
Wyoming	Zone 4b: -25°F to -20°F
Yale	Zone 5a: -20°F to -15°F
Yarmouth	Zone 5a: -20°F to -15°F
Yetter	Zone 4b: -25°F to -20°F
Yorktown	Zone 5a: -20°F to -15°F
Zearing	Zone 5a: -20°F to -15°F
Zwingle	Zone 5a: -20°F to -15°F

Iowa USDA Hardiness Zone Map

1990 USDA Hardiness Zone Maps for Neighboring States and Provinces

Related Iowa Maps:

List of 1990 Hardiness Zones for Cities in Iowa