Germantown Wisconsin Climate Data

Monthly Average Climate Data for Germantown Wisconsin

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-11.1 °C-2.5 °C45.21 mm
February-9.5 °C-0.4 °C41.91 mm
March-4.3 °C5.7 °C52.83 mm
April1.6 °C12.7 °C98.55 mm
May7.6 °C19.3 °C101.85 mm
June13.1 °C24.7 °C111 mm
July16 °C27.4 °C101.09 mm
August15.1 °C26.4 °C92.71 mm
September10.7 °C22.6 °C80.77 mm
October4.4 °C15.3 °C71.12 mm
November-1.7 °C7.4 °C54.36 mm
December-7.4 °C0.6 °C50.8 mm
Annual2.9 °C13.3 °C902.2 mm

Climate Data for Germantown Wisconsin

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 21 - May 31
Average Days With Frost150-180 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