Watertown Wisconsin Climate Data

Monthly Average Climate Data for Watertown Wisconsin

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January11.1 °F27.0 °F1.43 in.
February13.5 °F30.6 °F1.44 in.
March24.2 °F42.7 °F1.93 in.
April35.7 °F56.2 °F3.66 in.
May47.3 °F68.5 °F4.09 in.
June57.5 °F78.2 °F5.34 in.
July61.5 °F82.0 °F4.29 in.
August59.6 °F80.2 °F4.04 in.
September51.4 °F73.6 °F3.39 in.
October39.9 °F60.2 °F2.94 in.
November28.5 °F45.4 °F2.13 in.
December17.9 °F32.5 °F1.73 in.
Annual37.3 °F56.4 °F36.41 in.

Climate Data for Watertown Wisconsin

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5a : -20°F to -15°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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