Westfield Massachusetts Climate Data

Monthly Average Climate Data for Westfield Massachusetts

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-8.3 °C1.6 °C86.87 mm
February-7.6 °C3.1 °C77.47 mm
March-2.9 °C7.7 °C102.62 mm
April3.2 °C15.2 °C106.93 mm
May9 °C21.4 °C92.46 mm
June14.1 °C26 °C115.32 mm
July17.1 °C28.9 °C105.41 mm
August16.1 °C27.9 °C109.22 mm
September11.8 °C23.9 °C117.35 mm
October5.4 °C17 °C135.89 mm
November0.1 °C10.5 °C93.98 mm
December-4.7 °C4.5 °C116.33 mm
Annual4.4 °C15.6 °C1259.85 mm

Climate Data for Westfield Massachusetts

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 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 ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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