| Location | Average Last Frost Date |
|---|
| Absarokee | Jun. 11 - Jun. 20 |
| Acton | Jun. 1 - Jun. 10 |
| Agency | Jun. 11 - Jun. 20 |
| Alberton | Jul. 1 - Jul. 10 |
| Alder | Jul. 1 - Jul. 10 |
| Alzada | Jun. 11 - Jun. 20 |
| Amsterdam | Jun. 21 - Jun. 30 |
| Anaconda | Jun. 11 - Jun. 20 |
| Angela | Jun. 1 - Jun. 10 |
| Antelope | Jun. 1 - Jun. 10 |
| Apgar | Jun. 21 - Jun. 30 |
| Arlee | Jun. 11 - Jun. 20 |
| Ashland | Jun. 11 - Jun. 20 |
| Augusta | Jun. 11 - Jun. 20 |
| Avon | Jul. 11 - Jul. 20 |
| Azure | Jun. 1 - Jun. 10 |
| Babb | Jul. 11 - Jul. 20 |
| Bainville | Jun. 1 - Jun. 10 |
| Baker | Jun. 1 - Jun. 10 |
| Ballantine | Jun. 1 - Jun. 10 |
| Bannack | Jul. 1 - Jul. 10 |
| Basin | Jul. 1 - Jul. 10 |
| Batavia | Jun. 11 - Jun. 20 |
| Bear Dance | Jun. 1 - Jun. 10 |
| Bearcreek | Jun. 21 - Jun. 30 |
| Beaver Creek | Jun. 1 - Jun. 10 |
| Belfry | Jun. 11 - Jun. 20 |
| Belgrade | Jun. 21 - Jun. 30 |
| Belknap | Jun. 11 - Jun. 20 |
| Belt | Jun. 11 - Jun. 20 |
| Benzien | Jun. 1 - Jun. 10 |
| Biddle | Jun. 1 - Jun. 10 |
| Big Arm | Jun. 1 - Jun. 10 |
| Big Hole Natl Battlefield | Frost Year Round |
| Big Sandy | Jun. 11 - Jun. 20 |
| Big Sky | Frost Year Round |
| Big Sky Ski And Summer Resort | Jul. 21 - Jul. 31 |
| Big Timber | Jun. 11 - Jun. 20 |
| Bigfork | Jun. 11 - Jun. 20 |
| Bighorn | Jun. 1 - Jun. 10 |
| Billings | Jun. 1 - Jun. 10 |
| Birney | Jun. 11 - Jun. 20 |
| Birney Day School | Jun. 11 - Jun. 20 |
| Black Eagle | Jun. 1 - Jun. 10 |
| Bloomfield | May 21 - May 31 |
| Boneau | Jun. 1 - Jun. 10 |
| Bonner | Jun. 21 - Jun. 30 |
| Bonner-West Riverside | Jun. 11 - Jun. 20 |
| Boulder | Jun. 21 - Jun. 30 |
| Box Elder | Jun. 11 - Jun. 20 |
| Boyd | Jun. 11 - Jun. 20 |
| Boyes | Jun. 1 - Jun. 10 |
| Bozeman | Jun. 11 - Jun. 20 |
| Brady | Jun. 11 - Jun. 20 |
| Bredette | Jun. 1 - Jun. 10 |
| Bridger | Jun. 1 - Jun. 10 |
| Bridger Bowl Ski Area | Frost Year Round |
| Broadus | Jun. 1 - Jun. 10 |
| Broadview | Jun. 1 - Jun. 10 |
| Brockton | Jun. 1 - Jun. 10 |
| Brockway | Jun. 11 - Jun. 20 |
| Browning | Jun. 21 - Jun. 30 |
| Brusett | Jun. 1 - Jun. 10 |
| Buffalo | Jun. 21 - Jun. 30 |
| Busby | Jun. 11 - Jun. 20 |
| Butte | Jul. 1 - Jul. 10 |
| Bynum | Jun. 21 - Jun. 30 |
| Camas | Jun. 11 - Jun. 20 |
| Cameron | Jun. 21 - Jun. 30 |
| Camp Three | Jun. 1 - Jun. 10 |
| Canyon Creek | Jun. 21 - Jun. 30 |
| Capitol | Jun. 11 - Jun. 20 |
| Carbert | Jun. 11 - Jun. 20 |
| Cardwell | Jun. 21 - Jun. 30 |
| Carlton | Jun. 11 - Jun. 20 |
| Carter | Jun. 11 - Jun. 20 |
| Cascade | Jun. 11 - Jun. 20 |
| Charlo | Jun. 1 - Jun. 10 |
| Charlos Heights | Jun. 11 - Jun. 20 |
| Chester | Jun. 21 - Jun. 30 |
| Chinook | Jun. 1 - Jun. 10 |
| Choteau | Jun. 1 - Jun. 10 |
| Christina | Jun. 11 - Jun. 20 |
| Churchill | Jun. 21 - Jun. 30 |
| Circle | Jun. 1 - Jun. 10 |
| Clancy | Jun. 11 - Jun. 20 |
| Clinton | Jul. 11 - Jul. 20 |
| Clyde Park | Jun. 21 - Jun. 30 |
| Coffee Creek | Jun. 21 - Jun. 30 |
| Cohagen | Jun. 11 - Jun. 20 |
| Colstrip | Jun. 1 - Jun. 10 |
| Columbia Falls | Jun. 11 - Jun. 20 |
| Columbus | Jun. 11 - Jun. 20 |
| Condon | Jun. 21 - Jun. 30 |
| Conner | Jun. 21 - Jun. 30 |
| Conrad | Jun. 11 - Jun. 20 |
| Content | Jun. 11 - Jun. 20 |
| Cooke City | Frost Year Round |
| Coram | Jun. 11 - Jun. 20 |
| Corvallis | Jun. 11 - Jun. 20 |
| Corwin Springs | Jun. 21 - Jun. 30 |
| Craig | Jun. 1 - Jun. 10 |
| Crane | Jun. 1 - Jun. 10 |
| Crow Agency | Jun. 1 - Jun. 10 |
| Culbertson | Jun. 11 - Jun. 20 |
| Custer | Jun. 1 - Jun. 10 |
| Cut Bank | Jun. 11 - Jun. 20 |
| Dagmar | Jun. 1 - Jun. 10 |
| Daleview | Jun. 11 - Jun. 20 |
| Darby | Jun. 11 - Jun. 20 |
| Dayton | Jun. 1 - Jun. 10 |
| De Borgia | Jul. 21 - Jul. 31 |
| Decker | Jun. 11 - Jun. 20 |
| Deer Lodge | Jul. 21 - Jul. 31 |
| Dell | Jul. 11 - Jul. 20 |
| Denton | Jul. 1 - Jul. 10 |
| Dillon | Jun. 21 - Jun. 30 |
| Discovery Basin Ski Area | Jul. 11 - Jul. 20 |
| Divide | Jun. 21 - Jun. 30 |
| Dixon | Jun. 11 - Jun. 20 |
| Dodson | Jun. 11 - Jun. 20 |
| Dooley | Jun. 1 - Jun. 10 |
| Drummond | Jul. 1 - Jul. 10 |
| Dupuyer | Jun. 21 - Jun. 30 |
| Dutton | Jun. 11 - Jun. 20 |
| East Glacier Park | Jul. 21 - Jul. 31 |
| East Glacier Park Village | Jul. 21 - Jul. 31 |
| East Helena | Jun. 1 - Jun. 10 |
| East Missoula | Jun. 11 - Jun. 20 |
| Edgar | Jun. 11 - Jun. 20 |
| Ekalaka | Jun. 11 - Jun. 20 |
| Elkhorn | Jun. 21 - Jun. 30 |
| Elliston | Jul. 11 - Jul. 20 |
| Elmo | Jun. 1 - Jun. 10 |
| Emigrant | Jun. 11 - Jun. 20 |
| Ennis | Jun. 21 - Jun. 30 |
| Essex | Jul. 11 - Jul. 20 |
| Ethridge | Jun. 11 - Jun. 20 |
| Eureka | Jun. 11 - Jun. 20 |
| Evaro | Jun. 11 - Jun. 20 |
| Evergreen | Jun. 11 - Jun. 20 |
| Fairfield | Jun. 11 - Jun. 20 |
| Fairview | Jun. 1 - Jun. 10 |
| Fallon | Jun. 1 - Jun. 10 |
| Finley Point | Jun. 1 - Jun. 10 |
| Fishtail | Jun. 11 - Jun. 20 |
| Flaxville | Jun. 11 - Jun. 20 |
| Florence | Jun. 11 - Jun. 20 |
| Floweree | Jun. 11 - Jun. 20 |
| Forest Grove | Jun. 11 - Jun. 20 |
| Forest Hill Village | Jun. 11 - Jun. 20 |
| Forsyth | Jun. 1 - Jun. 10 |
| Fort Belknap | Jun. 11 - Jun. 20 |
| Fort Belknap Agency | Jun. 11 - Jun. 20 |
| Fort Benton | Jun. 11 - Jun. 20 |
| Fort Harrison | Jun. 11 - Jun. 20 |
| Fort Peck | May 21 - May 31 |
| Fort Shaw | Jun. 11 - Jun. 20 |
| Fort Smith | May 21 - May 31 |
| Fortine | Jun. 21 - Jun. 30 |
| Four Buttes | Jun. 1 - Jun. 10 |
| Four Corners | Jun. 21 - Jun. 30 |
| Fox Lake | Jun. 1 - Jun. 10 |
| Frazer | Jun. 1 - Jun. 10 |
| Frenchtown | Jun. 11 - Jun. 20 |
| Froid | Jun. 1 - Jun. 10 |
| Fromberg | Jun. 11 - Jun. 20 |
| Galata | Jun. 11 - Jun. 20 |
| Gallatin Gateway | Jun. 21 - Jun. 30 |
| Gardiner | Jun. 21 - Jun. 30 |
| Garneill | Jun. 21 - Jun. 30 |
| Garrison | Jul. 11 - Jul. 20 |
| Garryowen | Jun. 1 - Jun. 10 |
| Geraldine | Jun. 11 - Jun. 20 |
| Geyser | Jun. 21 - Jun. 30 |
| Gibson Flats | Jun. 1 - Jun. 10 |
| Gildford | Jun. 11 - Jun. 20 |
| Glacier Natl Park | Jul. 1 - Jul. 10 |
| Glasgow | May 21 - May 31 |
| Glen | Jun. 21 - Jun. 30 |
| Glendive | May 21 - May 31 |
| Glentana | Jun. 11 - Jun. 20 |
| Gold Creek | Jul. 11 - Jul. 20 |
| Grantsdale | Jun. 11 - Jun. 20 |
| Grass Range | Jun. 11 - Jun. 20 |
| Great Falls | Jun. 1 - Jun. 10 |
| Great Falls/Malmstrom AFB | Jun. 1 - Jun. 10 |
| Greenough | Jul. 21 - Jul. 31 |
| Greycliff | Jun. 11 - Jun. 20 |
| Hall | Jul. 1 - Jul. 10 |
| Hamilton | Jun. 11 - Jun. 20 |
| Hammond | Jun. 11 - Jun. 20 |
| Happys Inn | Jul. 11 - Jul. 20 |
| Hardin | Jun. 1 - Jun. 10 |
| Harlem | Jun. 11 - Jun. 20 |
| Harlowton | Jun. 11 - Jun. 20 |
| Harrison | Jun. 21 - Jun. 30 |
| Hathaway | Jun. 1 - Jun. 10 |
| Haugan | Jul. 21 - Jul. 31 |
| Havre | Jun. 1 - Jun. 10 |
| Havre North | Jun. 1 - Jun. 10 |
| Hays | Jun. 11 - Jun. 20 |
| Heart Butte | Jun. 21 - Jun. 30 |
| Hebgen Lake | Jul. 21 - Jul. 31 |
| Helena | Jun. 1 - Jun. 10 |
| Helena Valley Northeast | Jun. 11 - Jun. 20 |
| Helena Valley Northwest | Jun. 11 - Jun. 20 |
| Helena Valley Southeast | Jun. 1 - Jun. 10 |
| Helena Valley West Central | Jun. 11 - Jun. 20 |
| Helena West Side | Jun. 11 - Jun. 20 |
| Helmville | Jul. 21 - Jul. 31 |
| Heron | Jun. 21 - Jun. 30 |
| Herron | Jun. 1 - Jun. 10 |
| Highwood | Jun. 11 - Jun. 20 |
| Hilger | Jun. 11 - Jun. 20 |
| Hingham | Jun. 11 - Jun. 20 |
| Hinsdale | May 21 - May 31 |
| Hobson | Jun. 11 - Jun. 20 |
| Hogeland | Jun. 11 - Jun. 20 |
| Homestead | Jun. 1 - Jun. 10 |
| Hot Springs | Jun. 11 - Jun. 20 |
| Hot Springs Recreation Area | Frost Year Round |
| Hungry Horse | Jun. 11 - Jun. 20 |
| Huntley | Jun. 1 - Jun. 10 |
| Huson | Jun. 21 - Jun. 30 |
| Hysham | Jun. 1 - Jun. 10 |
| Ingomar | Jun. 1 - Jun. 10 |
| Inverness | Jun. 11 - Jun. 20 |
| Ismay | Jun. 1 - Jun. 10 |
| Jackson | Frost Year Round |
| Jardine | Jun. 21 - Jun. 30 |
| Jefferson City | Jun. 21 - Jun. 30 |
| Jette | Jun. 1 - Jun. 10 |
| Joliet | Jun. 11 - Jun. 20 |
| Joplin | Jun. 11 - Jun. 20 |
| Jordan | Jun. 1 - Jun. 10 |
| Judith Gap | Jun. 21 - Jun. 30 |
| Kalispell | Jun. 1 - Jun. 10 |
| Kerr | Jun. 1 - Jun. 10 |
| Kevin | Jun. 11 - Jun. 20 |
| Kicking Horse | Jun. 1 - Jun. 10 |
| Kila | Jun. 11 - Jun. 20 |
| King Arthur Park | Jun. 21 - Jun. 30 |
| Kings Point | Jun. 1 - Jun. 10 |
| Kinsey | Jun. 1 - Jun. 10 |
| Kirby | Jul. 1 - Jul. 10 |
| Klein | Jun. 1 - Jun. 10 |
| Knife River | Jun. 1 - Jun. 10 |
| Kremlin | Jun. 11 - Jun. 20 |
| Lake Mary Ronan | Jun. 1 - Jun. 10 |
| Lake McDonald | Jun. 21 - Jun. 30 |
| Lakeside | Jun. 11 - Jun. 20 |
| Lakeview | Jul. 21 - Jul. 31 |
| Lambert | Jun. 1 - Jun. 10 |
| Lame Deer | Jun. 11 - Jun. 20 |
| Landusky | Jun. 11 - Jun. 20 |
| Larslan | Jun. 11 - Jun. 20 |
| Laurel | Jun. 1 - Jun. 10 |
| Lavina | Jun. 11 - Jun. 20 |
| Ledger | Jun. 11 - Jun. 20 |
| Lewistown | Jun. 11 - Jun. 20 |
| Lewistown Heights | Jun. 11 - Jun. 20 |
| Libby | Jun. 21 - Jun. 30 |
| Lima | Jul. 11 - Jul. 20 |
| Lincoln | Jul. 21 - Jul. 31 |
| Lindisfarne | Jun. 1 - Jun. 10 |
| Lindsay | Jun. 1 - Jun. 10 |
| Livingston | Jun. 11 - Jun. 20 |
| Lloyd | Jun. 1 - Jun. 10 |
| Locate | Jun. 1 - Jun. 10 |
| Lockwood | Jun. 1 - Jun. 10 |
| Lodge Grass | Jun. 11 - Jun. 20 |
| Lodge Pole | Jun. 11 - Jun. 20 |
| Logan | Jun. 11 - Jun. 20 |
| Lolo | Jun. 11 - Jun. 20 |
| Lolo Hot Springs | Frost Year Round |
| Loma | Jun. 1 - Jun. 10 |
| Lonepine | Jun. 11 - Jun. 20 |
| Loring | Jun. 1 - Jun. 10 |
| Lothair | Jun. 11 - Jun. 20 |
| Lustre | Jun. 1 - Jun. 10 |
| Malmstrom AFB | Jun. 1 - Jun. 10 |
| Malta | Jun. 1 - Jun. 10 |
| Manhattan | Jun. 11 - Jun. 20 |
| Marion | Jun. 21 - Jun. 30 |
| Marsh | Jun. 1 - Jun. 10 |
| Martin City | Jun. 11 - Jun. 20 |
| Martinsdale | Jul. 11 - Jul. 20 |
| Marysville | Jun. 21 - Jun. 30 |
| Maudlow | Jun. 21 - Jun. 30 |
| Maxville | Jul. 11 - Jul. 20 |
| McAllister | Jun. 11 - Jun. 20 |
| McCabe | Jun. 1 - Jun. 10 |
| McLeod | Jun. 11 - Jun. 20 |
| Medicine Lake | Jun. 1 - Jun. 10 |
| Melrose | Jun. 21 - Jun. 30 |
| Melstone | Jun. 1 - Jun. 10 |
| Melville | Jun. 21 - Jun. 30 |
| Mildred | Jun. 11 - Jun. 20 |
| Miles City | May 21 - May 31 |
| Milltown | Jun. 11 - Jun. 20 |
| Missoula | Jun. 11 - Jun. 20 |
| Mizpah | Jun. 1 - Jun. 10 |
| Moccasin | Jun. 11 - Jun. 20 |
| Molt | Jun. 1 - Jun. 10 |
| Monarch | Jul. 1 - Jul. 10 |
| Montana City | Jun. 11 - Jun. 20 |
| Moore | Jun. 21 - Jun. 30 |
| Mosby | Jun. 1 - Jun. 10 |
| Muddy | Jun. 11 - Jun. 20 |
| Musselshell | Jun. 1 - Jun. 10 |
| Nashua | May 21 - May 31 |
| Neihart | Jul. 1 - Jul. 10 |
| Niarada | Jun. 11 - Jun. 20 |
| Norris | Jul. 1 - Jul. 10 |
| North Browning | Jun. 21 - Jun. 30 |
| Northwest Peak Scenic Area | Jun. 11 - Jun. 20 |
| Noxon | Jun. 21 - Jun. 30 |
| Nye | Jul. 1 - Jul. 10 |
| Oilmont | Jun. 11 - Jun. 20 |
| Old Agency | Jun. 11 - Jun. 20 |
| Olive | Jun. 11 - Jun. 20 |
| Olney | Jul. 21 - Jul. 31 |
| Opheim | Jun. 21 - Jun. 30 |
| Orchard Homes | Jun. 11 - Jun. 20 |
| Otter | Jun. 1 - Jun. 10 |
| Outlook | Jun. 11 - Jun. 20 |
| Ovando | Jul. 21 - Jul. 31 |
| Pablo | Jun. 1 - Jun. 10 |
| Paradise | Jun. 21 - Jun. 30 |
| Park City | Jun. 11 - Jun. 20 |
| Parker School | Jun. 1 - Jun. 10 |
| Peerless | Jun. 11 - Jun. 20 |
| Pendroy | Jun. 21 - Jun. 30 |
| Perma | Jun. 11 - Jun. 20 |
| Philipsburg | Jul. 21 - Jul. 31 |
| Piltzville | Jun. 21 - Jun. 30 |
| Pinesdale | Jun. 11 - Jun. 20 |
| Pioneer Junction | Jun. 21 - Jun. 30 |
| Plains | Jun. 21 - Jun. 30 |
| Plentywood | Jun. 1 - Jun. 10 |
| Plevna | Jun. 1 - Jun. 10 |
| Polaris | Jul. 21 - Jul. 31 |
| Polebridge | Frost Year Round |
| Polson | Jun. 1 - Jun. 10 |
| Pompeys Pillar | Jun. 1 - Jun. 10 |
| Pony | Jun. 21 - Jun. 30 |
| Poplar | Jun. 1 - Jun. 10 |
| Powderville | Jun. 1 - Jun. 10 |
| Power | Jun. 11 - Jun. 20 |
| Pray | Jun. 11 - Jun. 20 |
| Proctor | Jun. 1 - Jun. 10 |
| Pryor | Jun. 1 - Jun. 10 |
| Radersburg | Jun. 11 - Jun. 20 |
| Ramsay | Jul. 1 - Jul. 10 |
| Rapelje | Jun. 11 - Jun. 20 |
| Ravalli | Jun. 11 - Jun. 20 |
| Raymond | Jun. 1 - Jun. 10 |
| Raynesford | Jun. 11 - Jun. 20 |
| Red Lodge | Jun. 21 - Jun. 30 |
| Redstone | Jun. 11 - Jun. 20 |
| Reed Point | Jun. 11 - Jun. 20 |
| Reserve | Jun. 1 - Jun. 10 |
| Rexford | Jun. 11 - Jun. 20 |
| Richey | Jun. 1 - Jun. 10 |
| Richland | Jun. 11 - Jun. 20 |
| Ridgeway | Jun. 1 - Jun. 10 |
| Ringling | Jul. 11 - Jul. 20 |
| Riverbend | Jun. 11 - Jun. 20 |
| Rivulet | Jun. 21 - Jun. 30 |
| Roberts | Jun. 11 - Jun. 20 |
| Rocky Boy's Agency | Jun. 1 - Jun. 10 |
| Rocky Point | Jun. 1 - Jun. 10 |
| Rollins | Jun. 1 - Jun. 10 |
| Ronan | Jun. 1 - Jun. 10 |
| Roscoe | Jun. 21 - Jun. 30 |
| Rosebud | Jun. 1 - Jun. 10 |
| Ross Creek Scenic Area | Jun. 21 - Jun. 30 |
| Roundup | Jun. 1 - Jun. 10 |
| Roy | Jun. 1 - Jun. 10 |
| Rudyard | Jun. 11 - Jun. 20 |
| Ryegate | Jun. 11 - Jun. 20 |
| Saco | Jun. 1 - Jun. 10 |
| Saddle Butte | Jun. 1 - Jun. 10 |
| Saint Ignatius | Jun. 11 - Jun. 20 |
| Saint Marie | Jun. 1 - Jun. 10 |
| Saint Pierre | Jun. 1 - Jun. 10 |
| Saint Regis | Jul. 11 - Jul. 20 |
| Saint Xavier | Jun. 1 - Jun. 10 |
| Saltese | Jul. 1 - Jul. 10 |
| Sand Coulee | Jun. 11 - Jun. 20 |
| Sand Springs | Jun. 1 - Jun. 10 |
| Sanders | Jun. 1 - Jun. 10 |
| Sangrey | Jun. 1 - Jun. 10 |
| Santa Rita | Jun. 11 - Jun. 20 |
| Savage | Jun. 1 - Jun. 10 |
| Scobey | Jun. 1 - Jun. 10 |
| Sedan | Jul. 11 - Jul. 20 |
| Seeley Lake | Jul. 21 - Jul. 31 |
| Shambo | Jun. 1 - Jun. 10 |
| Shawmut | Jun. 11 - Jun. 20 |
| Shelby | Jun. 11 - Jun. 20 |
| Shepherd | Jun. 1 - Jun. 10 |
| Sheridan | Jul. 1 - Jul. 10 |
| Shonkin | Jun. 11 - Jun. 20 |
| Sidney | Jun. 1 - Jun. 10 |
| Silesia | Jun. 11 - Jun. 20 |
| Silver Gate | Frost Year Round |
| Silver Star | Jul. 1 - Jul. 10 |
| Simms | Jun. 11 - Jun. 20 |
| Snawmut | Jun. 21 - Jun. 30 |
| Somers | Jun. 11 - Jun. 20 |
| Sonnette | Jun. 1 - Jun. 10 |
| South Browning | Jun. 21 - Jun. 30 |
| Springdale | Jun. 11 - Jun. 20 |
| Springhill | Jul. 1 - Jul. 10 |
| Stanford | Jun. 21 - Jun. 30 |
| Starr School | Jul. 1 - Jul. 10 |
| Stevensville | Jun. 11 - Jun. 20 |
| Stockett | Jun. 11 - Jun. 20 |
| Stryker | Jul. 1 - Jul. 10 |
| Sula | Frost Year Round |
| Sumatra | Jun. 1 - Jun. 10 |
| Sun Prairie | Jun. 1 - Jun. 10 |
| Sun River | Jun. 11 - Jun. 20 |
| Sunburst | Jun. 11 - Jun. 20 |
| Superior | Jun. 11 - Jun. 20 |
| Swan Lake | Jul. 1 - Jul. 10 |
| Sweet Grass | Jun. 11 - Jun. 20 |
| Sylvanite | Jun. 21 - Jun. 30 |
| Teigen | Jun. 11 - Jun. 20 |
| Terry | Jun. 1 - Jun. 10 |
| Thompson Falls | Jun. 1 - Jun. 10 |
| Three Forks | Jun. 11 - Jun. 20 |
| Toston | Jun. 21 - Jun. 30 |
| Townsend | Jun. 11 - Jun. 20 |
| Trego | Jun. 21 - Jun. 30 |
| Trout Creek | Jul. 1 - Jul. 10 |
| Troy | Jun. 11 - Jun. 20 |
| Turah | Jun. 21 - Jun. 30 |
| Turner | Jun. 11 - Jun. 20 |
| Turtle Lake | Jun. 1 - Jun. 10 |
| Twin Bridges | Jul. 1 - Jul. 10 |
| Two Dot | Jul. 1 - Jul. 10 |
| Twodot | Jul. 1 - Jul. 10 |
| Ulm | Jun. 11 - Jun. 20 |
| Valier | Jun. 11 - Jun. 20 |
| Van Norman | Jun. 11 - Jun. 20 |
| Vananda | Jun. 1 - Jun. 10 |
| Vandalia | May 21 - May 31 |
| Vaughn | Jun. 11 - Jun. 20 |
| Victor | Jun. 11 - Jun. 20 |
| Vida | Jun. 1 - Jun. 10 |
| Virgelle | Jun. 11 - Jun. 20 |
| Virginia City | Jul. 1 - Jul. 10 |
| Volborg | Jun. 1 - Jun. 10 |
| Walkerville | Jul. 1 - Jul. 10 |
| Warm Springs | Jul. 1 - Jul. 10 |
| Warrick | Jun. 1 - Jun. 10 |
| Weeksville | Jun. 21 - Jun. 30 |
| West Glacier | Jun. 21 - Jun. 30 |
| West Glendive | May 21 - May 31 |
| West Havre | Jun. 1 - Jun. 10 |
| West Yellowstone | Jul. 21 - Jul. 31 |
| Westby | Jun. 1 - Jun. 10 |
| White Haven | Jun. 21 - Jun. 30 |
| White Sulphur Springs | Jun. 21 - Jun. 30 |
| Whitefish | Jun. 21 - Jun. 30 |
| Whitefish Mountain Resort | Jul. 1 - Jul. 10 |
| Whitehall | Jul. 1 - Jul. 10 |
| Whitetail | Jun. 11 - Jun. 20 |
| Whitewater | Jun. 1 - Jun. 10 |
| Whitlash | Jun. 11 - Jun. 20 |
| Wibaux | Jun. 11 - Jun. 20 |
| Wilborn | Jul. 1 - Jul. 10 |
| Willard | Jun. 1 - Jun. 10 |
| Willow Creek | Jun. 21 - Jun. 30 |
| Wilsall | Jul. 1 - Jul. 10 |
| Winifred | Jun. 1 - Jun. 10 |
| Winnett | Jun. 1 - Jun. 10 |
| Winston | Jun. 11 - Jun. 20 |
| Wisdom | Frost Year Round |
| Wise River | Jun. 21 - Jun. 30 |
| Wolf Creek | May 21 - May 31 |
| Wolf Point | Jun. 1 - Jun. 10 |
| Woods Bay | Jun. 1 - Jun. 10 |
| Worden | Jun. 1 - Jun. 10 |
| Wye | Jun. 11 - Jun. 20 |
| Wyola | Jun. 11 - Jun. 20 |
| Yaak | Jun. 21 - Jun. 30 |
| Yakt | Jul. 1 - Jul. 10 |
| Yellowtail | May 21 - May 31 |
| Zortman | Jun. 11 - Jun. 20 |
| Zurich | Jun. 11 - Jun. 20 |
