Tomorrow | Weather | Appleton, Wisconsin

Active Weather Warnings
Tuesday, June 30, 2026
Sunny with a Chance of Thunderstorms
Day 97°
Night 77°
Precipitation 55 %
Wind 13 mph
UV Index (0 - 11+) 9

Weather Alerts and Warnings for

Severe Expected Likely

Extreme Heat Warning

Extreme Heat Warning issued June 29 at 5:52PM CDT until June 30 at 7:00PM CDT by NWS Green Bay WI
Jun 29, 5:52 PM Jun 30, 7:00 PM
WHAT: Dangerously hot conditions with heat index values up to 109
expected. Overnight heat indices will remain around 75 degrees,
which will still be hazardous for anyone without shelter after the
extreme heat in the afternoon.

WHERE: Marathon, Portage, Waushara, Wood, Calumet, Winnebago,
Brown, Outagamie, Shawano, and Waupaca Counties.

WHEN: Until 7 PM CDT Tuesday.

IMPACTS: Heat related illnesses increase significantly during
extreme heat and high humidity events.
+ Read More
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Updated: Jun 29, 9:47 PM Source: NWS Alert