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Wauwatosa, WI Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Wauwatosa, a city in Milwaukee County, Wisconsin.

Overnight
61°F
Showers And Thunderstorms
Showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy, with a low around 61. East wind around 10 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

7-day forecast for Wauwatosa

WhenTempForecastWindPrecip
Overnight 61°F Showers And Thunderstorms 10 mph E 100%
Saturday 68°F Showers And Thunderstorms 5 to 10 mph SE 100%
Saturday Night 59°F Showers And Thunderstorms 5 to 10 mph E 76%
Sunday 65°F Scattered Rain Showers 10 to 15 mph NE 35%
Sunday Night 54°F Mostly Cloudy 10 to 15 mph NE 7%
Monday 63°F Mostly Cloudy 10 to 15 mph NE 6%
Monday Night 50°F Mostly Cloudy 10 to 15 mph NE 6%
Tuesday 62°F Partly Sunny 10 to 15 mph NE 7%
Tuesday Night 51°F Partly Cloudy 5 to 10 mph NE 7%
Wednesday 63°F Mostly Sunny 5 to 10 mph NE 7%
Wednesday Night 52°F Mostly Cloudy 5 to 10 mph NE 3%
Thursday 66°F Mostly Sunny 5 to 10 mph NE 4%
Thursday Night 52°F Partly Cloudy 0 to 5 mph NE 4%
Friday 69°F Mostly Sunny 5 to 10 mph NE 5%

Forecast source: National Weather Service (api.weather.gov) for Wauwatosa (43.063, -88.036). Updated through the day.

Growing snapshot for Wauwatosa

Last spring frost
Apr 26
First fall frost
Oct 18
Growing season
173 days
Hardiness zone
5b

More local growing data for Wauwatosa: nearby ZIP 53226 weather · frost dates · planting calendar · Wisconsin frost dates

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Climate data from the nearest NOAA station, Mt Mary College, Wi (1.6 mi from Wauwatosa). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.