Acton Massachusetts Climate Data

Monthly Average Climate Data for Acton Massachusetts

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January15.7 °F34.8 °F3.67 in.
February17.4 °F37.6 °F3.41 in.
March25.3 °F45.2 °F4.43 in.
April35.7 °F58.3 °F4.32 in.
May46.1 °F68.8 °F3.76 in.
June55.5 °F77.3 °F4.39 in.
July61.2 °F83.4 °F3.71 in.
August59.7 °F81.9 °F3.85 in.
September51.4 °F74.9 °F3.84 in.
October40.0 °F62.6 °F4.87 in.
November30.6 °F51.2 °F3.82 in.
December22.3 °F40.7 °F4.7 in.
Annual38.4 °F59.7 °F48.77 in.

Climate Data for Acton Massachusetts

Average First Frost DateOct. 1 - Oct. 10
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