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Hazardous Weather Conditions

Current conditions at

Mattoon / Charleston, Coles County Memorial Airport (KMTO)

Lat: 39.48°NLon: 88.28°WElev: 722ft.

Fair

55°F

13°C

Humidity 37%
Wind Speed W 10 G 31 mph
Barometer 30.19 in (1022.6 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill52°F (11°C)
Last update 19 Apr 10:53 am CDT
Extended Forecast for

Charleston IL

Frost Advisory April 20, 01:00am until April 20, 08:00am
Click here for hazard details and duration
Frost Advisory

  • Today

    Today: Increasing clouds, with a high near 60. Breezy, with a west wind 14 to 20 mph, with gusts as high as 32 mph.

    High: 60 °F

    Increasing
    Clouds and
    Breezy

  • Tonight

    Tonight: Areas of frost after 3am. Otherwise, mostly cloudy, then gradually becoming clear, with a low around 34. North northwest wind 5 to 10 mph becoming light north after midnight. Winds could gust as high as 22 mph.

    Low: 34 °F

    Partly Cloudy
    then Areas
    Frost

  • Monday

    Monday: Areas of frost before 8am. Otherwise, sunny, with a high near 59. Light and variable wind.

    High: 59 °F

    Areas Frost
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 45. South wind 5 to 10 mph, with gusts as high as 18 mph.

    Low: 45 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 75. Southwest wind 10 to 17 mph, with gusts as high as 29 mph.

    High: 75 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 56. Southwest wind around 10 mph, with gusts as high as 21 mph.

    Low: 56 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 76. West southwest wind around 9 mph, with gusts as high as 16 mph.

    High: 76 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 60. Breezy, with a west wind 14 to 20 mph, with gusts as high as 32 mph.
Tonight
Areas of frost after 3am. Otherwise, mostly cloudy, then gradually becoming clear, with a low around 34. North northwest wind 5 to 10 mph becoming light north after midnight. Winds could gust as high as 22 mph.
Monday
Areas of frost before 8am. Otherwise, sunny, with a high near 59. Light and variable wind.
Monday Night
Mostly clear, with a low around 45. South wind 5 to 10 mph, with gusts as high as 18 mph.
Tuesday
Mostly sunny, with a high near 75. Southwest wind 10 to 17 mph, with gusts as high as 29 mph.
Tuesday Night
Partly cloudy, with a low around 56. Southwest wind around 10 mph, with gusts as high as 21 mph.
Wednesday
Sunny, with a high near 76. West southwest wind around 9 mph, with gusts as high as 16 mph.
Wednesday Night
Mostly clear, with a low around 57.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
A 50 percent chance of showers after 1am. Mostly cloudy, with a low around 62.
Friday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 75.
Friday Night
Showers likely. Mostly cloudy, with a low around 50.
Saturday
A chance of showers. Mostly sunny, with a high near 67.
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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:
10:36 am CDT Apr 19, 2026
Forecast Valid:
11am CDT Apr 19, 2026-6pm CDT Apr 25, 2026
 
Forecast Discussion
 
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