Sudbury Massachusetts Climate Data

Monthly Average Climate Data for Sudbury Massachusetts

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January16.8 °F35.7 °F3.7 in.
February18.4 °F38.5 °F3.3 in.
March26.0 °F46.0 °F4.43 in.
April36.2 °F58.6 °F4.21 in.
May46.4 °F68.9 °F3.69 in.
June55.8 °F77.4 °F4.3 in.
July61.7 °F83.4 °F3.68 in.
August60.2 °F82.1 °F3.89 in.
September52.1 °F75.3 °F3.79 in.
October40.8 °F63.0 °F4.84 in.
November31.4 °F51.9 °F3.85 in.
December23.2 °F41.5 °F4.66 in.
Annual39.1 °F60.2 °F48.34 in.

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 : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year