Wauwatosa Wisconsin Climate Data

Monthly Average Climate Data for Wauwatosa Wisconsin

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January14.3 °F29.5 °F1.7 in.
February17.2 °F33.1 °F1.67 in.
March26.2 °F43.6 °F1.98 in.
April36.5 °F55.4 °F3.94 in.
May47.3 °F67.3 °F3.92 in.
June57.4 °F77.4 °F4.76 in.
July62.9 °F82.4 °F3.6 in.
August61.7 °F81.0 °F3.65 in.
September53.6 °F74.0 °F3.18 in.
October42.0 °F61.2 °F2.77 in.
November30.7 °F47.0 °F2.08 in.
December20.6 °F34.9 °F2.02 in.
Annual39.2 °F57.2 °F35.27 in.

Climate Data for Wauwatosa 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 6a : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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