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South Milwaukee, WI Weather & Growing Conditions

Today
68°F
Showers And Thunderstorms
Showers and thunderstorms before 1pm, then a chance of showers and thunderstorms between 1pm and 2pm, then showers and thunderstorms. Cloudy, with a high near 68. Southeast wind 10 to 15 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
Today 68°F Showers And Thunderstorms 10 to 15 mph SE 77%
Tonight 61°F Showers And Thunderstorms 5 to 15 mph E 88%
Sunday 64°F Rain Showers Likely 15 to 20 mph NE 60%
Sunday Night 53°F Mostly Cloudy 15 to 20 mph NE 4%
Monday 64°F Cloudy 15 mph NE 8%
Monday Night 52°F Mostly Cloudy 15 mph NE 5%
Tuesday 63°F Partly Sunny 15 mph NE 8%
Tuesday Night 52°F Partly Cloudy 10 to 15 mph NE 7%
Wednesday 63°F Partly Sunny 10 to 15 mph NE 9%
Wednesday Night 53°F Mostly Cloudy 5 to 15 mph NE 5%
Thursday 64°F Partly Sunny 5 to 10 mph NE 4%
Thursday Night 54°F Mostly Cloudy 5 to 10 mph NE 4%
Friday 67°F Partly Sunny 5 to 10 mph NE 4%
Friday Night 55°F Partly Cloudy 5 to 10 mph NE 3%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for South Milwaukee, WI

Last spring frost
Apr 22
First fall frost
Oct 26
Growing season
184 days
Hardiness zone
6a

Explore more for South Milwaukee, WI: full frost dates · planting calendar · Wisconsin frost dates

Climate data from the nearest NOAA station, South Milwaukee Wwtp, Wi (0.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.