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.

Fog/Mist

65°F

18°C

Humidity 92%
Wind Speed S 3 mph
Barometer 30.01 in
Dewpoint 63°F (17°C)
Visibility 2.50 mi
Last update 25 Jul 6:15 am CDT
Extended Forecast for

Roanoke IL

Heat Advisory July 26, 12:00pm until July 27, 09:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: A 20 percent chance of showers before 10am. Cloudy, then gradually becoming mostly sunny, with a high near 81. South wind 5 to 7 mph.

    High: 81 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 70. South wind 3 to 6 mph.

    Low: 70 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 91. Heat index values as high as 105. South southwest wind 3 to 8 mph.

    High: 91 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 75. South southwest wind 6 to 9 mph, with gusts as high as 17 mph.

    Low: 75 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny and hot, with a high near 95. South southwest wind 9 to 14 mph, with gusts as high as 22 mph.

    High: 95 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 73. Southwest wind 7 to 11 mph becoming north northwest after midnight. Winds could gust as high as 20 mph.

    Low: 73 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 89. North wind 7 to 10 mph, with gusts as high as 16 mph.

    High: 89 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

Detailed Forecast

Today
A 20 percent chance of showers before 10am. Cloudy, then gradually becoming mostly sunny, with a high near 81. South wind 5 to 7 mph.
Tonight
Mostly cloudy, with a low around 70. South wind 3 to 6 mph.
Sunday
Partly sunny, with a high near 91. Heat index values as high as 105. South southwest wind 3 to 8 mph.
Sunday Night
Partly cloudy, with a low around 75. South southwest wind 6 to 9 mph, with gusts as high as 17 mph.
Monday
Mostly sunny and hot, with a high near 95. South southwest wind 9 to 14 mph, with gusts as high as 22 mph.
Monday Night
Mostly clear, with a low around 73. Southwest wind 7 to 11 mph becoming north northwest after midnight. Winds could gust as high as 20 mph.
Tuesday
Mostly sunny, with a high near 89. North wind 7 to 10 mph, with gusts as high as 16 mph.
Tuesday Night
Mostly clear, with a low around 65.
Wednesday
Sunny, with a high near 88.
Wednesday Night
Mostly clear, with a low around 66.
Thursday
Sunny, with a high near 88.
Thursday Night
Partly cloudy, with a low around 67.
Friday
A chance of showers. Mostly sunny, with a high near 88.
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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:
4:11 am CDT Jul 25, 2026
Forecast Valid:
6am CDT Jul 25, 2026-6pm CDT Jul 31, 2026
 
Forecast Discussion
 
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Additional Resources

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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