Onalaska Wisconsin Climate Data

Monthly Average Climate Data for Onalaska Wisconsin

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-12.5 °C-3.2 °C29.72 mm
February-10.6 °C-0.6 °C29.46 mm
March-4.2 °C6.2 °C50.8 mm
April2.8 °C14.2 °C101.09 mm
May9.3 °C21.1 °C121.16 mm
June15 °C26.4 °C132.84 mm
July17.2 °C28.4 °C108.71 mm
August16.1 °C27.4 °C104.65 mm
September11.4 °C23.2 °C96.77 mm
October4.7 °C15.7 °C71.37 mm
November-1.9 °C6.9 °C48.77 mm
December-8.5 °C-0.3 °C37.59 mm
Annual3.2 °C13.8 °C932.93 mm

Climate Data for Onalaska 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 5a : -28.9°C to -26.1°C
Plant Hardiness Zone - 2012Zone 4b : -31.7°C to -28.9°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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