Weston Massachusetts Climate Data

Monthly Average Climate Data for Weston Massachusetts

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-8 °C2.1 °C92.71 mm
February-7.1 °C3.6 °C81.53 mm
March-3 °C7.7 °C110.24 mm
April2.7 °C14.6 °C103.38 mm
May8.2 °C20.4 °C96.27 mm
June13.4 °C25.2 °C108.71 mm
July16.7 °C28.5 °C90.42 mm
August15.9 °C27.7 °C100.58 mm
September11.7 °C23.9 °C93.98 mm
October5.4 °C17.1 °C120.65 mm
November0.2 °C10.9 °C99.31 mm
December-4.4 °C5.2 °C115.57 mm
Annual4.3 °C15.6 °C1213.35 mm

Climate Data for Weston Massachusetts

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 6b : -20.6°C to -17.8°C
Plant Hardiness Zone - 2012Zone 6a : -23.3°C to -20.6°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
2024 plantmaps.com