Granby Massachusetts Climate Data

Monthly Average Climate Data for Granby Massachusetts

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-9.2 °C1 °C84.58 mm
February-8.6 °C2.7 °C74.42 mm
March-3.7 °C7.3 °C93.73 mm
April2.2 °C14.7 °C95.25 mm
May8 °C20.9 °C91.19 mm
June13.2 °C25.6 °C109.47 mm
July16.3 °C28.6 °C101.09 mm
August15.3 °C27.7 °C106.93 mm
September11 °C23.7 °C113.28 mm
October4.6 °C16.6 °C121.41 mm
November-0.8 °C9.9 °C86.36 mm
December-5.5 °C4 °C102.36 mm
Annual3.6 °C15.2 °C1180.07 mm

Climate Data for Granby 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 : -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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