Watertown Connecticut Climate Data

Monthly Average Climate Data for Watertown Connecticut

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January17.4 °F35.9 °F3.56 in.
February18.6 °F38.9 °F3.12 in.
March25.7 °F46.9 °F4.29 in.
April36.2 °F59.4 °F3.98 in.
May46.4 °F70.4 °F4.12 in.
June55.6 °F78.6 °F4.61 in.
July61.1 °F83.5 °F4.83 in.
August59.5 °F81.6 °F4.65 in.
September52.3 °F74.5 °F4.72 in.
October40.7 °F62.7 °F5.38 in.
November31.3 °F51.3 °F3.99 in.
December23.5 °F40.7 °F4.54 in.
Annual39 °F60.4 °F51.79 in.

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 : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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