Holliston Massachusetts Climate Data

Monthly Average Climate Data for Holliston Massachusetts

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-8.2 °C2.3 °C98.81 mm
February-7.3 °C3.7 °C85.6 mm
March-3.1 °C7.8 °C116.33 mm
April2.6 °C14.7 °C111.76 mm
May8.2 °C20.4 °C88.65 mm
June13.4 °C25.1 °C109.22 mm
July16.7 °C28.3 °C90.68 mm
August15.9 °C27.6 °C100.58 mm
September11.6 °C23.8 °C97.79 mm
October5.3 °C17.1 °C122.17 mm
November0.1 °C11 °C100.58 mm
December-4.6 °C5.3 °C122.94 mm
Annual4.2 °C15.6 °C1245.11 mm

Climate Data for Holliston Massachusetts

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost100-125 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 ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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