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

Marshall County Airport (KC75)

Lat: 41.02°NLon: 89.39°WElev: 545ft.

Fair

88°F

31°C

Humidity 62%
Wind Speed SW 18 G 24 mph
Barometer 29.86 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 21 Jun 11:55 am CDT
Extended Forecast for

Neponset IL

Heat Advisory until June 23, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until June 23, 08:00pm

    NOW until 8:00pm Mon

    Heat Advisory

  • This Afternoon

    High: 94 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: Clear, with a low around 76. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 76 °F

    Clear and
    Breezy then
    Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 95. Heat index values as high as 103. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 95 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Clear, with a low around 75. South wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 75 °F

    Clear

  • Monday

    Monday: Sunny and hot, with a high near 96.

    High: 96 °F

    Hot

  • Monday Night

    Monday Night: A 30 percent chance of showers after 1am. Partly cloudy, with a low around 73.

    Low: 73 °F

    Mostly Clear
    then Chance
    Showers

  • Tuesday

    Tuesday: A 40 percent chance of showers. Mostly sunny, with a high near 93.

    High: 93 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Chance of precipitation is 30%.

    Low: 72 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 94. Heat index values as high as 103. Breezy, with a southwest wind around 25 mph, with gusts as high as 40 mph.
Tonight
Clear, with a low around 76. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday
Sunny and hot, with a high near 95. Heat index values as high as 103. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Clear, with a low around 75. South wind 10 to 15 mph, with gusts as high as 25 mph.
Monday
Sunny and hot, with a high near 96.
Monday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 73.
Tuesday
A 40 percent chance of showers. Mostly sunny, with a high near 93.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Chance of precipitation is 30%.
Wednesday
A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 93. Chance of precipitation is 40%.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 73. Chance of precipitation is 30%.
Thursday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Thursday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Friday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Neponset IL
 41.3°N 89.79°W (Elev. 817 ft)
Last Update:
10:31 am CDT Jun 21, 2025
Forecast Valid:
12pm CDT Jun 21, 2025-6pm CDT Jun 27, 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