Sudbury Massachusetts Climate Data

Monthly Average Climate Data for Sudbury Massachusetts

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-8.4 °C2.1 °C93.98 mm
February-7.6 °C3.6 °C83.82 mm
March-3.3 °C7.8 °C112.52 mm
April2.3 °C14.8 °C106.93 mm
May8 °C20.5 °C93.73 mm
June13.2 °C25.2 °C109.22 mm
July16.5 °C28.6 °C93.47 mm
August15.7 °C27.8 °C98.81 mm
September11.2 °C24.1 °C96.27 mm
October4.9 °C17.2 °C122.94 mm
November-0.3 °C11.1 °C97.79 mm
December-4.9 °C5.3 °C118.36 mm
Annual3.9 °C15.7 °C1227.84 mm

Climate Data for Sudbury 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
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