Granby Massachusetts Climate Data

Monthly Average Climate Data for Granby Massachusetts

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January15.4 °F33.8 °F3.33 in.
February16.6 °F36.8 °F2.93 in.
March25.3 °F45.1 °F3.69 in.
April36.0 °F58.5 °F3.75 in.
May46.4 °F69.7 °F3.59 in.
June55.7 °F78.1 °F4.31 in.
July61.3 °F83.4 °F3.98 in.
August59.5 °F81.8 °F4.21 in.
September51.8 °F74.6 °F4.46 in.
October40.3 °F61.9 °F4.78 in.
November30.6 °F49.9 °F3.4 in.
December22.1 °F39.2 °F4.03 in.
Annual38.4 °F59.4 °F46.46 in.

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 : -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