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.

Fair

48°F

9°C

Humidity 71%
Wind Speed S 8 mph
Barometer 29.99 in (1015.7 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 16 Feb 11:53 pm CST
Extended Forecast for

Charleston IL

  • Overnight

    Overnight: Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 39. South wind around 7 mph, with gusts as high as 16 mph.

    Low: 39 °F

    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 58. South wind 7 to 15 mph, with gusts as high as 29 mph.

    High: 58 °F

    Patchy Fog
    then Cloudy

  • Tuesday Night

    Tuesday Night: A 30 percent chance of rain after midnight. Cloudy, then gradually becoming partly cloudy, with a low around 53. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 33 mph.

    Low: 53 °F

    Breezy.
    Cloudy then
    Chance Rain

  • Wednesday

    Wednesday: Sunny, with a high near 68. West southwest wind 9 to 18 mph, with gusts as high as 32 mph.

    High: 68 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 46. Southwest wind around 7 mph becoming south southeast after midnight.

    Low: 46 °F

    Partly Cloudy

  • Thursday

    Thursday: Rain likely after noon. Partly sunny, with a high near 67. South southeast wind 7 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    High: 67 °F

    Partly Sunny
    then Rain
    Likely

  • Thursday Night

    Thursday Night: A 50 percent chance of rain before midnight. Partly cloudy, with a low around 37. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 37 °F

    Chance Rain
    then Mostly
    Clear

  • Friday

    Friday: Mostly sunny, with a high near 48.

    High: 48 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 39. South wind around 7 mph, with gusts as high as 16 mph.
Tuesday
Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 58. South wind 7 to 15 mph, with gusts as high as 29 mph.
Tuesday Night
A 30 percent chance of rain after midnight. Cloudy, then gradually becoming partly cloudy, with a low around 53. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 33 mph.
Wednesday
Sunny, with a high near 68. West southwest wind 9 to 18 mph, with gusts as high as 32 mph.
Wednesday Night
Partly cloudy, with a low around 46. Southwest wind around 7 mph becoming south southeast after midnight.
Thursday
Rain likely after noon. Partly sunny, with a high near 67. South southeast wind 7 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
A 50 percent chance of rain before midnight. Partly cloudy, with a low around 37. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Friday
Mostly sunny, with a high near 48.
Friday Night
Mostly cloudy, with a low around 29.
Saturday
Partly sunny, with a high near 45.
Saturday Night
Partly cloudy, with a low around 26.
Sunday
Mostly sunny, with a high near 39.
Sunday Night
Partly cloudy, with a low around 19.
Monday
Mostly sunny, with a high near 38.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Charleston IL
 39.5°N 88.19°W (Elev. 650 ft)
Last Update:
12:36 am CST Feb 17, 2026
Forecast Valid:
12am CST Feb 17, 2026-6pm CST Feb 23, 2026
 
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Additional Resources

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Chance of Precipitation