Ayer Massachusetts Climate Data

Monthly Average Climate Data for Ayer Massachusetts

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January15.1 °F34.4 °F3.55 in.
February16.9 °F37.3 °F3.37 in.
March24.9 °F45.1 °F4.28 in.
April35.5 °F58.4 °F4.0 in.
May46.2 °F69.3 °F3.74 in.
June55.7 °F78.1 °F4.51 in.
July61.4 °F83.9 °F3.72 in.
August59.8 °F82.3 °F3.94 in.
September51.6 °F75.0 °F4.0 in.
October39.8 °F62.4 °F4.84 in.
November30.3 °F50.7 °F3.86 in.
December21.7 °F40.1 °F4.48 in.
Annual38.2 °F59.8 °F48.29 in.

Climate Data for Ayer 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 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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