South Milwaukee Wisconsin Climate Data

Monthly Average Climate Data for South Milwaukee Wisconsin

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-8.9 °C-1.1 °C46.48 mm
February-7.3 °C0.5 °C43.94 mm
March-2.5 °C5.8 °C54.36 mm
April2.9 °C11.4 °C108.2 mm
May8.6 °C17.7 °C108.46 mm
June14.4 °C23.4 °C116.84 mm
July18 °C26.6 °C87.38 mm
August17.8 °C26 °C93.22 mm
September13.4 °C22.3 °C82.3 mm
October6.8 °C15.6 °C78.99 mm
November0.4 °C8.4 °C59.18 mm
December-5.4 °C1.8 °C50.29 mm
Annual4.9 °C13.2 °C929.64 mm

Climate Data for South Milwaukee Wisconsin

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 11 - May 20
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6a : -23.3°C to -20.6°C
Plant Hardiness Zone - 2012Zone 5b : -26.1°C to -23.3°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year