Boylston Massachusetts Climate Data

Monthly Average Climate Data for Boylston Massachusetts

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-9.1 °C1.1 °C96.01 mm
February-8.4 °C2.6 °C83.82 mm
March-3.9 °C6.8 °C113.54 mm
April1.9 °C14 °C108.2 mm
May7.9 °C20.1 °C91.44 mm
June13.2 °C24.7 °C107.95 mm
July16.4 °C27.7 °C100.84 mm
August15.4 °C26.9 °C112.52 mm
September10.9 °C23.1 °C104.14 mm
October4.6 °C16.4 °C127.76 mm
November-0.7 °C10.1 °C98.04 mm
December-5.5 °C4.3 °C115.82 mm
Annual3.6 °C14.8 °C1260.08 mm

Climate Data for Boylston 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 : -23.3°C to -20.6°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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