Weather Alerts For Rochester, WI

# HEADLINE -------------------- EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM CDT WEDNESDAY # DETAILS -------------------- WHAT Dangerously hot conditions with daytime heat index values up to 106 degrees today and Wednesday, with overnight heat index values in the upper 70s. WHERE Portions of east central, south central, and southeast Wisconsin. WHEN Until 7 PM CDT Wednesday. IMPACTS Heat related illnesses increase significantly during extreme heat and high humidity events. ISSUED AT Tuesday, June 30, 2026 at 3:45 AM CDT ISSUED BY National Weather Service Milwaukee/Sullivan WI HEADER URGENT - WEATHER MESSAGE # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. Stay cool, stay hydrated, stay informed. # AREAS AFFECTED -------------------- Lafayette, Washington, Columbia, Dane, Dodge, Fond du Lac, Green, Green Lake, Iowa, Jefferson, Kenosha, Marquette, Milwaukee, Ozaukee, Racine, Rock, Sauk, Sheboygan, Walworth, Waukesha Including the cities of Grafton, Blanchardville, Princeton, Oxford, Plymouth, Jefferson, Menomonee Falls, Howards Grove, Sauk City, Mineral Point, Madison, West Bend, Barneveld, Fort Atkinson, Brookfield, Janesville, Germantown, Mayville, Lake Geneva, Montello, Baraboo, Sheboygan Falls, Watertown, Markesan, Kenosha, Shullsburg, Lake Wisconsin, Beloit, Benton, Muskego, Milwaukee, Westfield, Cedarburg, Lodi, Brodhead, Darlington, Whitewater, Berlin, Hartford, Delavan, Racine, Reedsburg, Neshkoro, Waukesha, Dodgeville, Fond Du Lac, Endeavor, Belmont, Elkhorn, Monroe, Argyle, Portage, Columbus, Oostburg, Prairie Du Sac, Waupun, Mequon, New Berlin, East Troy, and Beaver Dam