Westwood Massachusetts Climate Data

Monthly Average Climate Data for Westwood Massachusetts

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-7.6 °C2.4 °C102.36 mm
February-6.7 °C3.8 °C87.88 mm
March-2.6 °C7.8 °C123.7 mm
April3.1 °C14.4 °C112.78 mm
May8.5 °C20.2 °C91.44 mm
June13.7 °C25.1 °C104.65 mm
July17.1 °C28.3 °C91.19 mm
August16.2 °C27.5 °C98.55 mm
September12.2 °C23.6 °C96.27 mm
October5.8 °C16.9 °C125.22 mm
November0.7 °C11.1 °C105.66 mm
December-4.1 °C5.5 °C123.7 mm
Annual4.7 °C15.6 °C1263.4 mm

Climate Data for Westwood Massachusetts

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6b : -20.6°C to -17.8°C
Plant Hardiness Zone - 2012Zone 6b : -20.6°C to -17.8°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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