South Windham Connecticut Climate Data

Monthly Average Climate Data for South Windham Connecticut

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-7.2 °C3.1 °C97.28 mm
February-6.3 °C4.6 °C83.31 mm
March-2.2 °C8.8 °C116.59 mm
April3.4 °C15.7 °C111.51 mm
May8.9 °C21.4 °C86.61 mm
June14 °C26 °C96.77 mm
July17.4 °C28.8 °C97.79 mm
August16.4 °C28 °C104.65 mm
September12.1 °C24.2 °C105.66 mm
October6 °C17.8 °C122.17 mm
November0.6 °C11.7 °C101.85 mm
December-3.7 °C6.1 °C117.86 mm
Annual5 °C16.4 °C1242.05 mm

Climate Data for South Windham 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 6a : -23.3°C to -20.6°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year