Watertown Connecticut Climate Data

Monthly Average Climate Data for Watertown Connecticut

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-8.1 °C2.2 °C90.42 mm
February-7.4 °C3.8 °C79.25 mm
March-3.5 °C8.3 °C108.97 mm
April2.3 °C15.2 °C101.09 mm
May8 °C21.3 °C104.65 mm
June13.1 °C25.9 °C117.09 mm
July16.2 °C28.6 °C122.68 mm
August15.3 °C27.6 °C118.11 mm
September11.3 °C23.6 °C119.89 mm
October4.8 °C17.1 °C136.65 mm
November-0.4 °C10.7 °C101.35 mm
December-4.7 °C4.8 °C115.32 mm
Annual3.9 °C15.8 °C1315.47 mm

Climate Data for Watertown 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 : -20.6°C to -17.8°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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