SEVERE THUNDERSTORM WATCH 563 REMAINS VALID UNTIL 2 PM CDT THIS AFTERNOON FOR THE FOLLOWING AREAS IN WISCONSIN THIS WATCH INCLUDES 9 COUNTIES IN SOUTH CENTRAL WISCONSIN DANE GREEN ROCK IN SOUTHEAST WISCONSIN JEFFERSON KENOSHA MILWAUKEE RACINE WALWORTH WAUKESHA THIS INCLUDES THE CITIES OF BELOIT, BRODHEAD, BROOKFIELD, DELAVAN, EAST TROY, ELKHORN, FORT ATKINSON, JANESVILLE, JEFFERSON, KENOSHA, LAKE GENEVA, MADISON, MENOMONEE FALLS, MILWAUKEE, MONROE, MUSKEGO, NEW BERLIN, RACINE, WATERTOWN, WAUKESHA, AND WHITEWATER.
Weather in Portage, WI
Updated 2026-08-11 12:00 local time · ZIP codes 53901

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THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 563 IN EFFECT UNTIL 2 PM CDT THIS AFTERNOON FOR THE FOLLOWING AREAS IN WISCONSIN THIS WATCH INCLUDES 12 COUNTIES IN SOUTH CENTRAL WISCONSIN DANE GREEN IOWA LAFAYETTE ROCK SAUK IN SOUTHEAST WISCONSIN JEFFERSON KENOSHA MILWAUKEE RACINE WALWORTH WAUKESHA THIS INCLUDES THE CITIES OF ARGYLE, BARABOO, BARNEVELD, BELMONT, BELOIT, BENTON, BLANCHARDVILLE, BRODHEAD, BROOKFIELD, DARLINGTON, DELAVAN, DODGEVILLE, EAST TROY, ELKHORN, FORT ATKINSON, JANESVILLE, JEFFERSON, KENOSHA, LAKE GENEVA, MADISON, MENOMONEE FALLS, MILWAUKEE, MINERAL POINT, MONROE, MUSKEGO, NEW BERLIN, PRAIRIE DU SAC, RACINE, REEDSBURG, SAUK CITY, SHULLSBURG, WATERTOWN, WAUKESHA, AND WHITEWATER.
Next hours
74°11% rain
78°11% rain
79°10% rain
80°8% rain
82°7% rain
81°9% rain
81°7% rain
79°9% rain
76°11% rain
74°12% rain
72°13% rain
71°13% rain3-day weather forecast



Weather details
Sunrise, sunset and moon
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 13%).
It feels like 78°F with winds near 5 mph.
80°F, 8% rain chance and 1 mph wind.
Visibility is around 10 mi; gusts may reach 10 mph.
Current temperature is 74°F, wind 5 mph, rain chance up to 13%.
UV index is 6. Sunscreen, shade and protective clothing are recommended.
Portage weather today
Cloudy and 74°F in Portage, WI. Today's high is 82°F with a 77% rain chance. Winds are around 5 mph with gusts near 10 mph. Relative humidity is 88%, pressure is 29.91 inHg, and visibility is about 10 miles.
Tonight and tomorrow in Portage
Sunrise is at 05:58 AM and sunset is at 08:07 PM. Tomorrow's forecast calls for Sunny with a high near 84°F and a low near 67°F. The maximum rain chance is 72%.