Windsor Connecticut Climate Data

Monthly Average Climate Data for Windsor Connecticut

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-7.5 °C1.8 °C92.2 mm
February-6.8 °C3.4 °C81.79 mm
March-2.4 °C7.9 °C107.7 mm
April3.6 °C15.2 °C104.39 mm
May9.3 °C21.3 °C94.49 mm
June14.4 °C26.1 °C114.05 mm
July17.4 °C29 °C107.19 mm
August16.5 °C28.1 °C109.47 mm
September12.3 °C24.1 °C119.13 mm
October5.9 °C17.2 °C135.38 mm
November0.4 °C10.7 °C100.08 mm
December-4.1 °C4.8 °C116.08 mm
Annual4.9 °C15.8 °C1281.95 mm

Climate Data for Windsor Connecticut

Average First Frost DateOct. 11 - Oct. 20
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 6b : -20.6°C to -17.8°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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