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Current conditions at

Mattoon / Charleston, Coles County Memorial Airport (KMTO)

Lat: 39.48°NLon: 88.28°WElev: 722ft.

Fair

61°F

16°C

Humidity 84%
Wind Speed S 5 mph
Barometer 29.97 in (1014.7 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 11 Oct 10:53 pm CDT
Extended Forecast for

Charleston IL

  • Tonight

    Tonight: Partly cloudy, with a low around 54. Calm wind becoming south around 6 mph after midnight.

    Low: 54 °F

    Partly Cloudy

  • Columbus Day

    Columbus Day: Partly sunny, then gradually becoming sunny, with a high near 90. Southwest wind 6 to 13 mph, with gusts as high as 20 mph.

    High: 90 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 69. South southwest wind 7 to 9 mph, with gusts as high as 18 mph.

    Low: 69 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 92. West southwest wind 9 to 11 mph, with gusts as high as 20 mph.

    High: 92 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 68. Southwest wind around 5 mph.

    Low: 68 °F

    Mostly Clear
    then Chance
    T-storms

  • Wednesday

    Wednesday: Showers likely, then showers and possibly a thunderstorm after 1pm. High near 82. West southwest wind around 6 mph becoming north northwest in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 82 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 60. North northeast wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 60 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 76. Chance of precipitation is 70%.

    High: 76 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 53. Chance of precipitation is 60%.

    Low: 53 °F

    Showers
    Likely

Detailed Forecast

Tonight
Partly cloudy, with a low around 54. Calm wind becoming south around 6 mph after midnight.
Columbus Day
Partly sunny, then gradually becoming sunny, with a high near 90. Southwest wind 6 to 13 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 69. South southwest wind 7 to 9 mph, with gusts as high as 18 mph.
Tuesday
Sunny, with a high near 92. West southwest wind 9 to 11 mph, with gusts as high as 20 mph.
Tuesday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 68. Southwest wind around 5 mph.
Wednesday
Showers likely, then showers and possibly a thunderstorm after 1pm. High near 82. West southwest wind around 6 mph becoming north northwest in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 60. North northeast wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 76. Chance of precipitation is 70%.
Thursday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 53. Chance of precipitation is 60%.
Friday
Partly sunny, with a high near 65. Breezy.
Friday Night
Partly cloudy, with a low around 37. Breezy.
Saturday
Sunny, with a high near 58.
Saturday Night
Clear, with a low around 34.
Sunday
Sunny, with a high near 65.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Charleston IL
 39.5°N 88.19°W (Elev. 650 ft)
Last Update:
10:36 pm CDT Oct 11, 2026
Forecast Valid:
11pm CDT Oct 11, 2026-6pm CDT Oct 18, 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