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

23°F

-5°C

Humidity 68%
Wind Speed S 3 mph
Barometer 30.23 in (1024.5 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Last update 24 Feb 1:53 am CST
Extended Forecast for

Casey IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 19. South southwest wind 3 to 6 mph.

    Low: 19 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 43. Breezy, with a south wind 8 to 13 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 38 mph.

    High: 43 °F

    Mostly Cloudy
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 31. Breezy, with a south southwest wind 15 to 20 mph becoming west 8 to 13 mph after midnight. Winds could gust as high as 32 mph.

    Low: 31 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 48. West northwest wind 6 to 10 mph, with gusts as high as 16 mph.

    High: 48 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of rain before 9pm, then rain and snow likely. Mostly cloudy, with a low around 32. North northwest wind 5 to 9 mph becoming east northeast after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 32 °F

    Rain/Snow
    Likely

  • Thursday

    Thursday: A 30 percent chance of rain before noon. Mostly cloudy, then gradually becoming sunny, with a high near 45. East northeast wind 8 to 11 mph becoming north in the afternoon. Winds could gust as high as 15 mph.

    High: 45 °F

    Chance Rain
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 28. North wind 5 to 7 mph becoming light and variable.

    Low: 28 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 37.

    Low: 37 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 19. South southwest wind 3 to 6 mph.
Tuesday
Mostly cloudy, with a high near 43. Breezy, with a south wind 8 to 13 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 38 mph.
Tuesday Night
Mostly cloudy, with a low around 31. Breezy, with a south southwest wind 15 to 20 mph becoming west 8 to 13 mph after midnight. Winds could gust as high as 32 mph.
Wednesday
Mostly sunny, with a high near 48. West northwest wind 6 to 10 mph, with gusts as high as 16 mph.
Wednesday Night
A chance of rain before 9pm, then rain and snow likely. Mostly cloudy, with a low around 32. North northwest wind 5 to 9 mph becoming east northeast after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday
A 30 percent chance of rain before noon. Mostly cloudy, then gradually becoming sunny, with a high near 45. East northeast wind 8 to 11 mph becoming north in the afternoon. Winds could gust as high as 15 mph.
Thursday Night
Mostly clear, with a low around 28. North wind 5 to 7 mph becoming light and variable.
Friday
Sunny, with a high near 56.
Friday Night
Mostly clear, with a low around 37.
Saturday
Mostly sunny, with a high near 59.
Saturday Night
Partly cloudy, with a low around 28.
Sunday
Partly sunny, with a high near 42.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 28.
Monday
A chance of rain and snow. Partly sunny, with a high near 44.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Casey IL
 39.3°N 88°W (Elev. 643 ft)
Last Update:
1:26 am CST Feb 24, 2026
Forecast Valid:
2am CST Feb 24, 2026-6pm CST Mar 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation