Windsor Connecticut Climate Data

Monthly Average Climate Data for Windsor Connecticut

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January18.5 °F35.3 °F3.63 in.
February19.8 °F38.1 °F3.22 in.
March27.6 °F46.3 °F4.24 in.
April38.4 °F59.4 °F4.11 in.
May48.8 °F70.4 °F3.72 in.
June58.0 °F78.9 °F4.49 in.
July63.4 °F84.2 °F4.22 in.
August61.7 °F82.5 °F4.31 in.
September54.2 °F75.3 °F4.69 in.
October42.7 °F63.0 °F5.33 in.
November32.8 °F51.3 °F3.94 in.
December24.7 °F40.7 °F4.57 in.
Annual40.9 °F60.5 °F50.47 in.

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 : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6b : -5°F to 0°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation