ZIP Code 01267 Hardiness Zones and Climate Data

ZIP Code 01267 - Williamstown Massachusetts is in 2023 USDA Hardiness Zones 6a (-10°F to -5°F), 5a (-20°F to -15°F) and 5b (-15°F to -10°F)

Additional Gardening Related Climate Data for ZIP Code 01267 - Williamstown, Massachusetts

2023 Hardiness Zone:Zone 6a: -10°F to -5°F
Zone 5a: -20°F to -15°F
Zone 5b: -15°F to -10°F
2012 Hardiness Zone:Zone 5a: -20°F to -15°F
Zone 5b: -15°F to -10°F
1990 Hardiness Zone:Zone 5a: -20F to -15F
Average First Frost Date:Oct. 1 - Oct. 10
Average Last Frost Date:May 11 - May 20
Koppen-Geiger Climate Zone:Dfb - Humid Continental Mild Summer, Wet All Year
Ecoregion:58b - Western New England Marble Valleys
Heat Zone Days: Rare Over 86°F

Annual Climate Data for ZIP Code 01267 - Williamstown, MA

JanFebMarAprMayJunJulAugSepOctNovDecAnnual
Avg Min Temp (°F)11122232435256554736281834
Avg Max Temp (°F)30334254677580787059463556
Avg Precip (In.)2.411.822.383.013.83.874.154.333.653.383.32.4538.55

Source Data:

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