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.

Overcast

21°F

-6°C

Humidity 85%
Wind Speed S 7 mph
Barometer 30.09 in (1019.9 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill12°F (-11°C)
Last update 2 Dec 7:53 pm CST
Extended Forecast for

Casey IL

  • Tonight

    Tonight: Areas of fog after 9pm. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 16. South wind 3 to 8 mph.

    Low: 16 °F

    Areas Fog

  • Wednesday

    Wednesday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 35. South southwest wind 7 to 11 mph, with gusts as high as 17 mph.

    High: 35 °F

    Patchy Fog
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: Isolated snow showers. Cloudy, with a low around 11. Wind chill values between zero and 5. West wind 6 to 13 mph becoming north after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 20%.

    Low: 11 °F

    Isolated Snow
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 20. Wind chill values between -2 and 8. North wind 5 to 11 mph, with gusts as high as 17 mph.

    High: 20 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 7. Light and variable wind.

    Low: 7 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 31. South southwest wind 3 to 8 mph.

    High: 31 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 18. Southwest wind around 6 mph.

    Low: 18 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 32.

    High: 32 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 20.

    Low: 20 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Areas of fog after 9pm. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 16. South wind 3 to 8 mph.
Wednesday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 35. South southwest wind 7 to 11 mph, with gusts as high as 17 mph.
Wednesday Night
Isolated snow showers. Cloudy, with a low around 11. Wind chill values between zero and 5. West wind 6 to 13 mph becoming north after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Thursday
Mostly sunny, with a high near 20. Wind chill values between -2 and 8. North wind 5 to 11 mph, with gusts as high as 17 mph.
Thursday Night
Partly cloudy, with a low around 7. Light and variable wind.
Friday
Mostly sunny, with a high near 31. South southwest wind 3 to 8 mph.
Friday Night
Mostly cloudy, with a low around 18. Southwest wind around 6 mph.
Saturday
Partly sunny, with a high near 32.
Saturday Night
Mostly cloudy, with a low around 20.
Sunday
Mostly cloudy, with a high near 31.
Sunday Night
Mostly cloudy, with a low around 15.
Monday
Partly sunny, with a high near 30.
Monday Night
Mostly cloudy, with a low around 18.
Tuesday
Mostly cloudy, with a high near 35.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Casey IL
 39.3°N 87.97°W (Elev. 627 ft)
Last Update:
8:37 pm CST Dec 2, 2025
Forecast Valid:
8pm CST Dec 2, 2025-6pm CST Dec 9, 2025
 
Forecast Discussion
 
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Additional Resources

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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