Harvard Massachusetts Climate Data

Monthly Average Climate Data for Harvard Massachusetts

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January15.5 °F34.3 °F3.66 in.
February17.0 °F37.0 °F3.39 in.
March25.1 °F44.7 °F4.38 in.
April35.7 °F57.9 °F4.17 in.
May46.5 °F68.8 °F3.76 in.
June56.0 °F77.4 °F4.44 in.
July61.7 °F83.1 °F3.76 in.
August60.0 °F81.6 °F3.99 in.
September51.8 °F74.6 °F4.03 in.
October40.2 °F62.1 °F4.9 in.
November30.6 °F50.7 °F3.87 in.
December22.1 °F40.1 °F4.57 in.
Annual38.5 °F59.4 °F48.92 in.

Climate Data for Harvard Massachusetts

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 21 - May 31
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 6a : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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