South Milwaukee, WI Weather & Growing Conditions
This Afternoon
64°F
Cloudy
Cloudy. High near 64, with temperatures falling to around 55 in the afternoon. Southwest wind 10 to 15 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 64°F | Cloudy | 10 to 15 mph SW | 4% |
| Tonight | 47°F | Cloudy then Chance Light Rain | 10 to 15 mph SW | 29% |
| Thursday | 54°F | Light Rain Likely | 10 to 15 mph W | 60% |
| Thursday Night | 38°F | Slight Chance Light Rain then Cloudy | 15 mph N | 20% |
| Friday | 49°F | Partly Sunny | 15 to 20 mph N | 7% |
| Friday Night | 32°F | Partly Cloudy | 10 to 15 mph N | 0% |
| Saturday | 52°F | Sunny | 5 to 10 mph NW | 0% |
| Saturday Night | 36°F | Mostly Clear | 5 to 10 mph W | 0% |
| Sunday | 55°F | Sunny | 10 to 15 mph W | 1% |
| Sunday Night | 39°F | Mostly Clear | 5 to 10 mph W | 0% |
| Monday | 59°F | Sunny | 5 to 15 mph SW | 0% |
| Monday Night | 43°F | Mostly Clear | 10 to 15 mph W | 0% |
| Tuesday | 58°F | Sunny | 5 to 10 mph NW | 0% |
| Tuesday Night | 41°F | Partly Cloudy | 5 mph NW | 1% |
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 Nov 5, 2026.