South Windsor Connecticut Climate Data

Monthly Average Climate Data for South Windsor Connecticut

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-7.2 °C2.2 °C88.65 mm
February-6.4 °C3.7 °C78.49 mm
March-2.1 °C8.2 °C106.68 mm
April3.8 °C15.3 °C102.62 mm
May9.4 °C21.4 °C90.93 mm
June14.6 °C26.1 °C113.03 mm
July17.7 °C29.1 °C104.9 mm
August16.7 °C28.2 °C107.19 mm
September12.6 °C24.2 °C114.81 mm
October6.2 °C17.4 °C125.22 mm
November0.7 °C10.9 °C96.27 mm
December-3.7 °C5.2 °C111 mm
Annual5.2 °C16 °C1239.79 mm

Climate Data for South Windsor Connecticut

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
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