Acton Massachusetts Climate Data

Monthly Average Climate Data for Acton Massachusetts

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-9.1 °C1.6 °C93.22 mm
February-8.1 °C3.1 °C86.61 mm
March-3.7 °C7.3 °C112.52 mm
April2.1 °C14.6 °C109.73 mm
May7.8 °C20.4 °C95.5 mm
June13.1 °C25.2 °C111.51 mm
July16.2 °C28.6 °C94.23 mm
August15.4 °C27.7 °C97.79 mm
September10.8 °C23.8 °C97.54 mm
October4.4 °C17 °C123.7 mm
November-0.8 °C10.7 °C97.03 mm
December-5.4 °C4.8 °C119.38 mm
Annual3.6 °C15.4 °C1238.76 mm

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 : -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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