Heavy to Excessive Rains in The Four Corners Region and Midwest; Heat Persists in the South-Central U.S.

Repeated rounds of showers and thunderstorms could bring a flash flooding threat across the Four Corners region and from the mid-Mississippi Valley into the lower Great Lakes. Hot temperatures and high humidity will continue to challenge daily records from the Southern Plains to the lower Mississippi Valley. Read More >

Hazardous Weather Conditions

Current conditions at

Mattoon / Charleston, Coles County Memorial Airport (KMTO)

Lat: 39.48°NLon: 88.28°WElev: 722ft.

A Few Clouds

89°F

32°C

Humidity 57%
Wind Speed Vrbl 3 mph
Barometer 30.20 in (1022.2 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 16 Sep 5:53 pm CDT
Extended Forecast for

Casey ILSimilar City Names

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly before 8pm.  Partly cloudy, with a low around 72. North northwest wind around 5 mph becoming light and variable.

    Low: 72 °F

    Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 94. Southwest wind 5 to 7 mph becoming north northwest in the afternoon.

    High: 94 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms between 1am and 4am, then a slight chance of showers after 4am.  Partly cloudy, with a low around 70. Light and variable wind becoming north northeast around 6 mph in the evening.  Chance of precipitation is 20%.

    Low: 70 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Friday

    Friday: A 30 percent chance of showers before 1pm.  Mostly cloudy, then gradually becoming sunny, with a high near 90. Northeast wind 5 to 7 mph.

    High: 90 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 68. Southeast wind around 8 mph.

    Low: 68 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny and hot, with a high near 95. South southeast wind 8 to 11 mph becoming west in the afternoon. Winds could gust as high as 17 mph.

    High: 95 °F

    Hot

  • Saturday Night

    Saturday Night: A 30 percent chance of showers after 1am.  Mostly cloudy, with a low around 70. South southwest wind around 6 mph.

    Low: 70 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: A 40 percent chance of showers after 1pm.  Partly sunny, with a high near 90.

    High: 90 °F

    Partly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 40 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 72. North northwest wind around 5 mph becoming light and variable.
Thursday
Mostly sunny, with a high near 94. Southwest wind 5 to 7 mph becoming north northwest in the afternoon.
Thursday Night
A slight chance of showers and thunderstorms between 1am and 4am, then a slight chance of showers after 4am. Partly cloudy, with a low around 70. Light and variable wind becoming north northeast around 6 mph in the evening. Chance of precipitation is 20%.
Friday
A 30 percent chance of showers before 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 90. Northeast wind 5 to 7 mph.
Friday Night
Partly cloudy, with a low around 68. Southeast wind around 8 mph.
Saturday
Mostly sunny and hot, with a high near 95. South southeast wind 8 to 11 mph becoming west in the afternoon. Winds could gust as high as 17 mph.
Saturday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 70. South southwest wind around 6 mph.
Sunday
A 40 percent chance of showers after 1pm. Partly sunny, with a high near 90.
Sunday Night
Partly cloudy, with a low around 66.
Monday
Partly sunny, with a high near 86.
Monday Night
A chance of showers. Mostly cloudy, with a low around 63.
Tuesday
A chance of showers. Mostly sunny, with a high near 81.
Tuesday Night
Partly cloudy, with a low around 61.
Wednesday
Mostly sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
Casey ILSimilar City Names
 39.3°N 88°W (Elev. 643 ft)
6:06 pm CDT Sep 16, 2026
6pm CDT Sep 16, 2026-6pm CDT Sep 23, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database