Oconomowoc Lake Wisconsin Climate Data

Monthly Average Climate Data for Oconomowoc Lake Wisconsin

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-11.6 °C-2.7 °C41.91 mm
February-10.2 °C-0.7 °C40.64 mm
March-4.6 °C5.8 °C52.07 mm
April1.7 °C13.2 °C95.5 mm
May8 °C19.8 °C104.65 mm
June13.6 °C25.3 °C123.44 mm
July16 °C27.6 °C103.89 mm
August15 °C26.6 °C102.36 mm
September10.5 °C22.8 °C84.33 mm
October4.2 °C15.5 °C72.9 mm
November-2 °C7.4 °C55.12 mm
December-7.8 °C0.4 °C48.01 mm
Annual2.7 °C13.4 °C924.82 mm

Climate Data for Oconomowoc Lake Wisconsin

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 21 - May 31
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 5b : -26.1°C to -23.3°C
Plant Hardiness Zone - 2012Zone 5a : -28.9°C to -26.1°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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