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

Marshall County Airport (KC75)

Lat: 41.02°NLon: 89.39°WElev: 545ft.

Fair

71°F

22°C

Humidity 67%
Wind Speed Calm
Barometer 30.13 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 25 Aug 9:35 am CDT
Extended Forecast for

Roanoke IL

  • Today

    Today: Sunny, with a high near 80. Calm wind becoming south around 5 mph in the afternoon.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 63. Calm wind becoming south around 6 mph after midnight.

    Low: 63 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 85. South southwest wind 7 to 11 mph becoming west in the afternoon. Winds could gust as high as 18 mph.

    High: 85 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms before 7pm. Clear, with a low around 63. West northwest wind 3 to 7 mph.

    Low: 63 °F

    Chance
    T-storms then
    Clear

  • Thursday

    Thursday: Sunny, with a high near 82. North northwest wind 3 to 8 mph.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 60. North wind around 5 mph becoming calm in the evening.

    Low: 60 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 82. Calm wind.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 80. Calm wind becoming south around 5 mph in the afternoon.
Tonight
Partly cloudy, with a low around 63. Calm wind becoming south around 6 mph after midnight.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 85. South southwest wind 7 to 11 mph becoming west in the afternoon. Winds could gust as high as 18 mph.
Wednesday Night
A 30 percent chance of showers and thunderstorms before 7pm. Clear, with a low around 63. West northwest wind 3 to 7 mph.
Thursday
Sunny, with a high near 82. North northwest wind 3 to 8 mph.
Thursday Night
Mostly clear, with a low around 60. North wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 82. Calm wind.
Friday Night
Mostly clear, with a low around 60.
Saturday
Mostly sunny, with a high near 83.
Saturday Night
Partly cloudy, with a low around 66.
Sunday
Mostly sunny, with a high near 87.
Sunday Night
A chance of showers. Partly cloudy, with a low around 71.
Monday
Mostly sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Roanoke IL
 40.8°N 89.2°W (Elev. 738 ft)
Last Update:
9:37 am CDT Aug 25, 2026
Forecast Valid:
9am CDT Aug 25, 2026-6pm CDT Aug 31, 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