Westminster Massachusetts Climate Data

Monthly Average Climate Data for Westminster Massachusetts

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January13.5 °F30.8 °F3.68 in.
February14.8 °F33.9 °F3.35 in.
March22.5 °F41.5 °F4.35 in.
April33.6 °F54.7 °F4.07 in.
May43.8 °F66.1 °F3.83 in.
June53.5 °F74.5 °F4.33 in.
July59.1 °F79.7 °F4.07 in.
August57.3 °F78.2 °F4.07 in.
September50.4 °F71.0 °F4.18 in.
October39.0 °F58.2 °F5.0 in.
November29.2 °F46.8 °F3.86 in.
December20.4 °F36.2 °F4.42 in.
Annual36.4 °F56 °F49.21 in.

Climate Data for Westminster Massachusetts

Average First Frost DateSep. 21 - Sep. 30
Average Last Frost DateJun. 1 - Jun. 10
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 6a : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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