Lake Mills Wisconsin Climate Data

Monthly Average Climate Data for Lake Mills Wisconsin

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January11.3 °F27.1 °F1.49 in.
February14.1 °F30.9 °F1.48 in.
March24.6 °F43.0 °F2.08 in.
April35.9 °F56.6 °F3.81 in.
May47.6 °F69.1 °F4.04 in.
June57.7 °F78.9 °F5.38 in.
July61.8 °F82.5 °F4.28 in.
August59.8 °F80.5 °F4.26 in.
September51.5 °F73.9 °F3.49 in.
October40.0 °F60.5 °F2.91 in.
November28.7 °F45.5 °F2.13 in.
December18.2 °F32.6 °F1.76 in.
Annual37.6 °F56.8 °F37.11 in.

Climate Data for Lake Mills 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 ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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