National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Great Lakes

Thunderstorms with strong wind gusts and hail will be possible today from Michigan into the Lower Great Lakes region. A significant and dangerous heat wave will expand from the Central U.S. into the Eastern U.S this weekend through much of next week. Numerous daily record highs and warm lows are likely. Read More >

Hazardous Weather Conditions

Current conditions at

Wittman Regional Airport (KOSH)

Lat: 43.97°NLon: 88.56°WElev: 801ft.

Fair and Breezy

90°F

32°C

Humidity 59%
Wind Speed SW 22 G 44 mph
Barometer 29.62 in (1001.4 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index99°F (37°C)
Last update 21 Jun 2:53 pm CDT
Extended Forecast for

3 Miles NNE Eureka WI

Heat Advisory until June 23, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until June 23, 07:00pm

    NOW until 7:00pm Mon

    Heat Advisory

  • This Afternoon

    High: 92 °F

    Hot and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 78. Southwest wind 14 to 17 mph, with gusts as high as 30 mph.

    Low: 78 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 93. Heat index values as high as 100. South southwest wind 15 to 20 mph, with gusts as high as 31 mph.

    High: 93 °F

    Hot

  • Sunday Night

    Sunday Night: Clear, with a low around 78. South southwest wind around 15 mph, with gusts as high as 26 mph.

    Low: 78 °F

    Clear

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 92. Southwest wind 15 to 17 mph, with gusts as high as 26 mph.

    High: 92 °F

    Sunny then
    Chance
    T-storms

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 68. Chance of precipitation is 70%.

    Low: 68 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 79. Chance of precipitation is 70%.

    High: 79 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. Chance of precipitation is 70%.

    Low: 61 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Mostly sunny and hot, with a high near 92. Heat index values as high as 102. Breezy, with a south southwest wind around 22 mph, with gusts as high as 39 mph.
Tonight
Mostly clear, with a low around 78. Southwest wind 14 to 17 mph, with gusts as high as 30 mph.
Sunday
Sunny and hot, with a high near 93. Heat index values as high as 100. South southwest wind 15 to 20 mph, with gusts as high as 31 mph.
Sunday Night
Clear, with a low around 78. South southwest wind around 15 mph, with gusts as high as 26 mph.
Monday
A 40 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 92. Southwest wind 15 to 17 mph, with gusts as high as 26 mph.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 68. Chance of precipitation is 70%.
Tuesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 79. Chance of precipitation is 70%.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. Chance of precipitation is 70%.
Wednesday
Showers and possibly a thunderstorm. High near 75. Chance of precipitation is 80%.
Wednesday Night
Showers and possibly a thunderstorm. Low around 62. Chance of precipitation is 80%.
Thursday
Showers and possibly a thunderstorm. High near 78. Chance of precipitation is 80%.
Thursday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
Friday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 78.
Friday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 63.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Eureka WI
 44.05°N 88.83°W (Elev. 850 ft)
Last Update:
3:06 pm CDT Jun 21, 2025
Forecast Valid:
3pm CDT Jun 21, 2025-6pm CDT Jun 28, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation