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

Hazardous Weather Conditions

Current conditions at

Mattoon / Charleston, Coles County Memorial Airport (KMTO)

Lat: 39.48°NLon: 88.28°WElev: 722ft.

Overcast

67°F

19°C

Humidity 87%
Wind Speed NA
Barometer 29.75 in (1007.0 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 22 Jun 1:53 am CDT
Extended Forecast for

Charleston IL

  • Overnight

    Overnight: A 20 percent chance of showers before 3am. Mostly cloudy, with a low around 63. West northwest wind 7 to 9 mph, with gusts as high as 17 mph.

    Low: 63 °F

    Slight Chance
    Showers

  • Monday

    Monday: Mostly cloudy, with a high near 72. North wind 10 to 13 mph, with gusts as high as 22 mph.

    High: 72 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly clear, with a low around 55. North wind 3 to 7 mph. Winds could gust as high as 15 mph.

    Low: 55 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 77. Light north northeast wind.

    High: 77 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 58. Calm wind.

    Low: 58 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 79. South southwest wind 3 to 6 mph. Chance of precipitation is 30%.

    High: 79 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 63. South southwest wind 3 to 5 mph.

    Low: 63 °F

    Chance
    T-storms

  • Thursday

    Thursday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 62.

    Low: 62 °F

    Chance
    Showers

Detailed Forecast

Overnight
A 20 percent chance of showers before 3am. Mostly cloudy, with a low around 63. West northwest wind 7 to 9 mph, with gusts as high as 17 mph.
Monday
Mostly cloudy, with a high near 72. North wind 10 to 13 mph, with gusts as high as 22 mph.
Monday Night
Mostly clear, with a low around 55. North wind 3 to 7 mph. Winds could gust as high as 15 mph.
Tuesday
Sunny, with a high near 77. Light north northeast wind.
Tuesday Night
Partly cloudy, with a low around 58. Calm wind.
Wednesday
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 79. South southwest wind 3 to 6 mph. Chance of precipitation is 30%.
Wednesday Night
A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 63. South southwest wind 3 to 5 mph.
Thursday
Mostly sunny, with a high near 80.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 62.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 82.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Sunday
Mostly sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Charleston IL
 39.48°N 88.16°W (Elev. 699 ft)
Last Update:
1:26 am CDT Jun 22, 2026
Forecast Valid:
2am CDT Jun 22, 2026-6pm CDT Jun 28, 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