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Hazardous Weather Conditions

Current conditions at

Marshall County Airport (KC75)

Lat: 41.02°NLon: 89.39°WElev: 545ft.

Fair

83°F

28°C

Humidity 78%
Wind Speed Calm
Barometer 29.90 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 4 Sep 7:55 pm CDT
Extended Forecast for

Eureka IL

Extreme Heat Warning September 4, 08:19pm until September 5, 07:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning September 4, 08:19pm until September 5, 07:00pm

    NOW until 7:00pm Sat

    Extreme Heat Warning

  • Tonight

    Low: 73 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 93. Heat index values as high as 103. Light and variable wind becoming north 5 to 9 mph in the morning.

    High: 93 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 66. East northeast wind 6 to 10 mph, with gusts as high as 18 mph.

    Low: 66 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 85. East wind 6 to 9 mph.

    High: 85 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 61. East wind 5 to 8 mph, with gusts as high as 15 mph.

    Low: 61 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 85. East southeast wind 5 to 8 mph.

    High: 85 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 63. East wind around 7 mph, with gusts as high as 15 mph.

    Low: 63 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 92.

    High: 92 °F

    Mostly Sunny

Detailed Forecast

Tonight
Partly cloudy, with a low around 73. Light southwest wind.
Saturday
Sunny, with a high near 93. Heat index values as high as 103. Light and variable wind becoming north 5 to 9 mph in the morning.
Saturday Night
Partly cloudy, with a low around 66. East northeast wind 6 to 10 mph, with gusts as high as 18 mph.
Sunday
Sunny, with a high near 85. East wind 6 to 9 mph.
Sunday Night
Mostly clear, with a low around 61. East wind 5 to 8 mph, with gusts as high as 15 mph.
Labor Day
Sunny, with a high near 85. East southeast wind 5 to 8 mph.
Monday Night
Mostly clear, with a low around 63. East wind around 7 mph, with gusts as high as 15 mph.
Tuesday
Mostly sunny, with a high near 92.
Tuesday Night
Mostly clear, with a low around 73.
Wednesday
Mostly sunny, with a high near 94.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 68.
Thursday
Mostly sunny, with a high near 85.
Thursday Night
Partly cloudy, with a low around 61.
Friday
Mostly sunny, with a high near 86.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Eureka IL
 40.71°N 89.27°W (Elev. 774 ft)
Last Update:
7:36 pm CDT Sep 4, 2026
Forecast Valid:
8pm CDT Sep 4, 2026-6pm CDT Sep 11, 2026
 
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