Windham Connecticut Climate Data

Monthly Average Climate Data for Windham Connecticut

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January18.4 °F36.8 °F3.98 in.
February19.9 °F39.5 °F3.34 in.
March27.4 °F47.1 °F4.65 in.
April37.3 °F59.6 °F4.45 in.
May47.2 °F69.9 °F3.49 in.
June56.4 °F78.0 °F4.01 in.
July62.5 °F83.1 °F3.99 in.
August60.7 °F81.6 °F4.14 in.
September53.0 °F74.7 °F4.2 in.
October42.0 °F63.3 °F4.92 in.
November32.6 °F52.4 °F4.08 in.
December24.5 °F42.3 °F4.68 in.
Annual40.2 °F60.7 °F49.93 in.

Climate Data for Windham 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 : -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