Durham Connecticut Climate Data

Monthly Average Climate Data for Durham Connecticut

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January19.3 °F36.6 °F3.88 in.
February20.6 °F39.2 °F3.36 in.
March28.2 °F46.9 °F4.59 in.
April38.2 °F59.2 °F4.34 in.
May48.2 °F69.8 °F3.92 in.
June57.6 °F78.4 °F4.78 in.
July63.2 °F83.9 °F4.07 in.
August61.7 °F82.0 °F4.24 in.
September54.3 °F74.9 °F4.55 in.
October42.7 °F63.0 °F5.36 in.
November33.0 °F51.9 °F4.07 in.
December25.1 °F41.9 °F4.64 in.
Annual41 °F60.6 °F51.8 in.

Climate Data for Durham Connecticut

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 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 ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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