Milwaukee Wisconsin Climate Data

Monthly Average Climate Data for Milwaukee Wisconsin

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January16.3 °F30.5 °F1.7 in.
February18.9 °F33.5 °F1.6 in.
March27.6 °F43.0 °F2.0 in.
April37.4 °F53.9 °F3.98 in.
May47.4 °F65.6 °F3.94 in.
June57.9 °F75.6 °F4.57 in.
July63.8 °F80.9 °F3.57 in.
August63.6 °F79.7 °F3.61 in.
September56.0 °F72.6 °F3.24 in.
October44.3 °F60.5 °F2.87 in.
November32.8 °F47.4 °F2.15 in.
December22.5 °F35.7 °F1.97 in.
Annual40.7 °F56.6 °F35.2 in.

Climate Data for Milwaukee Wisconsin

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 6a : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation