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

Mattoon / Charleston, Coles County Memorial Airport (KMTO)

Lat: 39.48°NLon: 88.28°WElev: 722ft.

A Few Clouds

63°F

17°C

Humidity 87%
Wind Speed Calm
Barometer 30.05 in (1017.2 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 23 Aug 10:53 pm CDT
Extended Forecast for

Shelbyville IL

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, mostly clear, with a low around 56. Calm wind.

    Low: 56 °F

    Patchy Fog

  • Monday

    Monday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 81. Calm wind becoming north northeast around 5 mph in the afternoon.

    High: 81 °F

    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 58. Light east wind.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 84. Calm wind becoming southeast around 5 mph.

    High: 84 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 63. Light east southeast wind.

    Low: 63 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 87. Southwest wind 3 to 7 mph.

    High: 87 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers before 1am. Mostly clear, with a low around 65. West southwest wind around 5 mph becoming calm in the evening.

    Low: 65 °F

    Chance
    Showers

  • Thursday

    Thursday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after 3am. Otherwise, mostly clear, with a low around 56. Calm wind.
Monday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 81. Calm wind becoming north northeast around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 58. Light east wind.
Tuesday
Sunny, with a high near 84. Calm wind becoming southeast around 5 mph.
Tuesday Night
Partly cloudy, with a low around 63. Light east southeast wind.
Wednesday
Mostly sunny, with a high near 87. Southwest wind 3 to 7 mph.
Wednesday Night
A 30 percent chance of showers before 1am. Mostly clear, with a low around 65. West southwest wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 86.
Thursday Night
Mostly clear, with a low around 63.
Friday
Sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 63.
Saturday
Mostly sunny, with a high near 86.
Saturday Night
A chance of showers. Partly cloudy, with a low around 67.
Sunday
A chance of showers. Partly sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Shelbyville IL
 39.42°N 88.79°W (Elev. 650 ft)
Last Update:
10:36 pm CDT Aug 23, 2026
Forecast Valid:
11pm CDT Aug 23, 2026-6pm CDT Aug 30, 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