Westminster Massachusetts Climate Data

Monthly Average Climate Data for Westminster Massachusetts

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-10.3 °C-0.7 °C93.47 mm
February-9.6 °C1.1 °C85.09 mm
March-5.3 °C5.3 °C110.49 mm
April0.9 °C12.6 °C103.38 mm
May6.6 °C18.9 °C97.28 mm
June11.9 °C23.6 °C109.98 mm
July15.1 °C26.5 °C103.38 mm
August14.1 °C25.7 °C103.38 mm
September10.2 °C21.7 °C106.17 mm
October3.9 °C14.6 °C127 mm
November-1.6 °C8.2 °C98.04 mm
December-6.4 °C2.3 °C112.27 mm
Annual2.5 °C13.3 °C1249.93 mm

Climate Data for Westminster Massachusetts

Average First Frost DateSep. 21 - Sep. 30
Average Last Frost DateJun. 1 - Jun. 10
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 6a : -23.3°C to -20.6°C
Plant Hardiness Zone - 2012Zone 5b : -26.1°C to -23.3°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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