Williamstown Vermont Climate Data

Monthly Average Climate Data for Williamstown Vermont

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-13.8 °C-2.9 °C67.82 mm
February-13.2 °C-1.1 °C57.15 mm
March-7.9 °C3.6 °C72.9 mm
April-0.9 °C11.1 °C82.3 mm
May5.6 °C18.7 °C85.6 mm
June10.6 °C23.4 °C112.78 mm
July13.3 °C26 °C115.32 mm
August12.3 °C25.1 °C98.55 mm
September8.2 °C21.1 °C82.8 mm
October2.2 °C13.6 °C101.85 mm
November-3.2 °C6.5 °C76.71 mm
December-9.2 °C0.1 °C84.07 mm
Annual0.3 °C12.1 °C1037.85 mm

Climate Data for Williamstown Vermont

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 21 - May 31
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 5a : -28.9°C to -26.1°C
Plant Hardiness Zone - 2012Zone 4b : -31.7°C to -28.9°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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