Wisconsin · NWS MKX office

South Milwaukee, WI weather

It is 57°F and clear at Milwaukee, General Mitchell International Airport as of Oct 28, 1:15 AM CDT. Overnight: Partly Cloudy, low near 50°F, 1% chance of precipitation. Forecast from the National Weather Service, issued Oct 28, 1:21 AM CDT.

Updated Oct 28, 1:32 AM CDT (snapshot)

Current conditions

Temperature

57°F

Clear

Wind

SSW 5 mph

Humidity 82% · dew point 52°F

Pressure · visibility

30.17 inHg

Visibility 10 mi

Observed at Milwaukee, General Mitchell International Airport (KMKE), Oct 28, 1:15 AM CDT. Station readings can lag or be missing.

Alerts for this area

No active NWS alerts cover the South Milwaukee forecast zone right now.

Around the NWS MKX forecast area

No active alerts in zones served by the MKX office near South Milwaukee.

From the alert snapshot of Oct 28, 2026, 2:15 AM EDT. No alerts are active anywhere in Wisconsin.

For official warnings, check weather.gov and your local authorities. OpenForecast repeats National Weather Service alerts and may be delayed or incomplete. Follow instructions from emergency officials.

Next 24 hours

Hourly forecast for South Milwaukee (local time)
TimeTempForecastPrecip. chanceWind
Wed 1 AM55°FMostly Cloudy1%SW 5 mph
Wed 2 AM55°FPartly Cloudy1%SW 5 mph
Wed 3 AM54°FPartly Cloudy1%SW 5 mph
Wed 4 AM53°FMostly Clear1%SW 5 mph
Wed 5 AM51°FMostly Clear1%SW 5 mph
Wed 6 AM50°FSunny1%SW 5 mph
Wed 7 AM51°FSunny0%SW 5 mph
Wed 8 AM53°FSunny0%SW 5 mph
Wed 9 AM56°FSunny0%SW 5 mph
Wed 10 AM61°FSunny0%SW 5 mph
Wed 11 AM64°FSunny0%S 10 mph
Wed 12 PM67°FSunny0%S 10 mph
Wed 1 PM69°FSunny0%S 10 mph
Wed 2 PM69°FSunny0%S 10 mph
Wed 3 PM69°FSunny0%S 10 mph
Wed 4 PM69°FSunny0%S 10 mph
Wed 5 PM67°FSunny1%S 10 mph
Wed 6 PM65°FMostly Clear2%S 10 mph
Wed 7 PM62°FMostly Clear4%S 10 mph
Wed 8 PM62°FMostly Clear4%S 10 mph
Wed 9 PM62°FMostly Clear5%S 10 mph
Wed 10 PM61°FMostly Clear6%S 10 mph
Wed 11 PM61°FPartly Cloudy6%S 15 mph
Thu 12 AM61°FPartly Cloudy11%SW 15 mph

Hourly values come from the NWS gridded forecast for the 2.5 km grid square that covers the city's center point. Conditions elsewhere in South Milwaukee can differ.

7-day forecast

Overnight

Low 50°F

Partly cloudy, with a low around 50. Southwest wind around 5 mph.

Wednesday

High 70°F·Low 57°F

Sunny, with a high near 70. South wind 5 to 10 mph.

Wednesday Night: A slight chance of showers and thunderstorms between 1am and 2am, then a chance of showers and thunderstorms between 2am and 5am, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 57. South wind 10 to 15 mph. Chance of precipitation is 40%.

Thursday

High 68°F·Low 43°F

A slight chance of showers and thunderstorms before 7am. Mostly sunny. High near 68, with temperatures falling to around 63 in the afternoon. West wind around 10 mph. Chance of precipitation is 20%.

Thursday Night: Mostly clear, with a low around 43. Northwest wind around 5 mph.

Friday

High 58°F·Low 47°F

Partly sunny, with a high near 58. Northeast wind around 5 mph.

Friday Night: Mostly cloudy, with a low around 47. East wind around 5 mph.

Saturday

High 60°F·Low 50°F

A slight chance of rain showers after 7am. Mostly cloudy, with a high near 60. East wind 5 to 10 mph. Chance of precipitation is 20%.

Saturday Night: A slight chance of rain showers. Cloudy, with a low around 50. Chance of precipitation is 20%.

Sunday

High 62°F·Low 51°F

A chance of rain showers. Mostly cloudy, with a high near 62. Chance of precipitation is 30%.

Sunday Night: A slight chance of rain showers. Mostly cloudy, with a low around 51. Chance of precipitation is 20%.

Monday

High 62°F·Low 51°F

A chance of rain showers. Mostly cloudy, with a high near 62. Chance of precipitation is 30%.

Monday Night: A chance of rain showers. Mostly cloudy, with a low around 51. Chance of precipitation is 50%.

Tuesday

High 61°F

A chance of rain showers. Mostly cloudy, with a high near 61. Chance of precipitation is 50%.

Nearby cities

Larger cities in the area

Other cities in Milwaukee County

See every city we cover in Wisconsin, or check all active alerts.

About this forecast

Forecast office
South Milwaukee is served by the National Weather Service MKX forecast office, forecast zone WIZ066, county zone WIC079.
Location used
The Census Bureau's internal point for South Milwaukee (42.9126, -87.8623), in Milwaukee County. Population: 20,233 (2024 estimate), number 41 of the 42 Wisconsin cities on this site.
Radar
Nearest NWS radar: KMKX. View it on radar.weather.gov.

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Sources

  • Forecast, hourly forecast, observations and alerts: National Weather Service API, api.weather.gov/points/42.9126,-87.8623 (forecast issued Oct 28, 1:21 AM CDT).
  • Official forecast page: forecast.weather.gov.
  • City location and population: U.S. Census Bureau, Vintage 2024 population estimates and 2024 Gazetteer files.
  • Snapshot taken Oct 28, 2026. The NWS and Census Bureau do not endorse OpenForecast.

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