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

Hazardous Weather Conditions

Current conditions at

Marshall County Airport (KC75)

Lat: 41.02°NLon: 89.39°WElev: 545ft.

Mostly Cloudy

88°F

31°C

Humidity 73%
Wind Speed S 5 mph
Barometer 29.88 in
Dewpoint 78°F (26°C)
Visibility 10.00 mi
Heat Index102°F (39°C)
Last update 26 Jul 1:55 pm CDT
Extended Forecast for

Roanoke IL

Heat Advisory July 26, 02:17pm until July 27, 09:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 26, 02:17pm until July 27, 09:00pm

    NOW until 9:00pm Mon

    Heat Advisory

  • This Afternoon

    High: 89 °F

    Partly Sunny

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 76. Calm wind becoming south southeast around 6 mph after midnight.

    Low: 76 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Monday

    Monday: A chance of showers and thunderstorms before noon, then a slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 92. Heat index values as high as 111. South wind 7 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

    High: 92 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 72. West southwest wind 7 to 10 mph becoming north after midnight. Winds could gust as high as 18 mph.

    Low: 72 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 85. North wind 9 to 11 mph, with gusts as high as 17 mph.

    High: 85 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 62. Northeast wind 3 to 7 mph.

    Low: 62 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 84. North northeast wind 3 to 7 mph.

    High: 84 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 62.

    Low: 62 °F

    Clear

Detailed Forecast

This Afternoon
Partly sunny, with a high near 89. Heat index values as high as 107. West southwest wind around 5 mph.
Tonight
A 20 percent chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 76. Calm wind becoming south southeast around 6 mph after midnight.
Monday
A chance of showers and thunderstorms before noon, then a slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 92. Heat index values as high as 111. South wind 7 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 72. West southwest wind 7 to 10 mph becoming north after midnight. Winds could gust as high as 18 mph.
Tuesday
Mostly sunny, with a high near 85. North wind 9 to 11 mph, with gusts as high as 17 mph.
Tuesday Night
Mostly clear, with a low around 62. Northeast wind 3 to 7 mph.
Wednesday
Sunny, with a high near 84. North northeast wind 3 to 7 mph.
Wednesday Night
Clear, with a low around 62.
Thursday
Sunny, with a high near 86.
Thursday Night
Mostly cloudy, with a low around 66.
Friday
A chance of showers. Mostly cloudy, with a high near 83.
Friday Night
A chance of showers. Partly cloudy, with a low around 66.
Saturday
A chance of showers. Mostly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Roanoke IL
 40.8°N 89.2°W (Elev. 738 ft)
Last Update:
1:46 pm CDT Jul 26, 2026
Forecast Valid:
2pm CDT Jul 26, 2026-6pm CDT Aug 1, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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