Plymouth Connecticut Climate Data

Monthly Average Climate Data for Plymouth Connecticut

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-8.3 °C1.4 °C96.27 mm
February-7.4 °C3.1 °C83.82 mm
March-3.6 °C7.4 °C118.11 mm
April2.2 °C15.1 °C104.9 mm
May7.9 °C21.1 °C107.19 mm
June13.1 °C25.6 °C117.35 mm
July16.1 °C28.2 °C121.92 mm
August15.3 °C27.2 °C119.13 mm
September11.4 °C23.2 °C120.65 mm
October4.9 °C16.7 °C142.75 mm
November-0.3 °C10.1 °C105.66 mm
December-5.1 °C4.1 °C119.89 mm
Annual3.9 °C15.3 °C1357.64 mm

Climate Data for Plymouth Connecticut

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 6a : -23.3°C to -20.6°C
Plant Hardiness Zone - 2012Zone 6a : -23.3°C to -20.6°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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