Brookfield Wisconsin Climate Data

Monthly Average Climate Data for Brookfield Wisconsin

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-10.8 °C-2.1 °C43.69 mm
February-9.2 °C-0.1 °C40.89 mm
March-4.1 °C6 °C51.05 mm
April1.9 °C12.9 °C97.54 mm
May7.9 °C19.4 °C102.11 mm
June13.4 °C24.9 °C121.41 mm
July16.3 °C27.6 °C97.79 mm
August15.5 °C26.7 °C95 mm
September10.9 °C22.8 °C80.01 mm
October4.7 °C15.7 °C71.63 mm
November-1.4 °C7.7 °C52.58 mm
December-7.2 °C0.9 °C51.05 mm
Annual3.2 °C13.5 °C904.75 mm

Climate Data for Brookfield 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 : -26.1°C to -23.3°C
Plant Hardiness Zone - 2012Zone 5b : -26.1°C to -23.3°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation