Willimantic Connecticut Climate Data

Monthly Average Climate Data for Willimantic Connecticut

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January18.4 °F36.8 °F3.93 in.
February19.9 °F39.5 °F3.31 in.
March27.4 °F47.1 °F4.62 in.
April37.5 °F59.5 °F4.44 in.
May47.3 °F69.8 °F3.51 in.
June56.5 °F78.0 °F4.06 in.
July62.6 °F83.1 °F3.98 in.
August60.7 °F81.6 °F4.17 in.
September53.0 °F74.8 °F4.23 in.
October42.0 °F63.4 °F4.92 in.
November32.2 °F52.3 °F4.06 in.
December24.5 °F42.3 °F4.66 in.
Annual40.2 °F60.7 °F49.89 in.

Climate Data for Willimantic 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
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