Putnam Connecticut Climate Data

Monthly Average Climate Data for Putnam Connecticut

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January16.6 °F36.5 °F3.89 in.
February17.8 °F38.9 °F3.39 in.
March25.4 °F46.6 °F4.45 in.
April35.3 °F59.3 °F4.46 in.
May45.1 °F70.0 °F3.46 in.
June54.4 °F77.9 °F4.29 in.
July60.6 °F83.2 °F3.94 in.
August58.2 °F81.3 °F4.26 in.
September51.4 °F74.5 °F4.27 in.
October40.5 °F62.9 °F4.83 in.
November30.4 °F51.9 °F4.03 in.
December22.3 °F41.7 °F4.68 in.
Annual38.2 °F60.4 °F49.95 in.

Climate Data for Putnam Connecticut

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 21 - May 31
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 6a : -10°F to -5°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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