South Windham Connecticut Climate Data

Monthly Average Climate Data for South Windham Connecticut

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January19.1 °F37.5 °F3.83 in.
February20.7 °F40.2 °F3.28 in.
March28.1 °F47.8 °F4.59 in.
April38.1 °F60.3 °F4.39 in.
May48.0 °F70.6 °F3.41 in.
June57.2 °F78.8 °F3.81 in.
July63.4 °F83.8 °F3.85 in.
August61.5 °F82.4 °F4.12 in.
September53.7 °F75.5 °F4.16 in.
October42.8 °F64.1 °F4.81 in.
November33.0 °F53.0 °F4.01 in.
December25.3 °F42.9 °F4.64 in.
Annual40.9 °F61.4 °F48.9 in.

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 : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year