Zipcode 06475 - Old Saybrook Connecticut is in Hardiness Zones 6b and 7a

Zip Code 06475 Border
Zone 6b
-5°F to 0°F
Zone 7a
0°F to 5°F
View the Full Connecticut Hardiness Zone Map

Additional Gardening Related Climate Data for Zipcode 06475 - Old Saybrook, Connecticut

1990 Hardiness Zone:Zone 6a: -10F to -5FConnecticut 1990 USDA Hardiness Zone Map
Average First Frost Date:October 21 - 31Connecticut First Frost Date Map
Average Last Frost Date:April 21 - 30Connecticut Last Frost Date Map
Koppen-Geiger Climate Zone:Dfb - Humid Continental Mild Summer, Wet All Year
Ecoregion:59c - Southern New England Coastal Plains and HillsConnecticut Ecoregions
Current Drought Status:Exceptional Drought
Heat Zone Days: Rare Over 86°FConnecticut Heat Zones Map

Annual Climate Data for Zipcode 06475 - Old Saybrook, CT

Avg Min Temp (°F)18202835455561605341332439
Avg Max Temp (°F)38404858687682817464534360
Avg Precip (In.)4.463.474.434.393.963.843.644.43.954.184.534.2449.48

Source Data:

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