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

42°F

6°C

Humidity 71%
Wind Speed N 20 G 31 mph
Barometer 30.41 in (1030.2 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 27 Mar 1:53 pm CDT
Extended Forecast for

5 Miles SE Sullivan IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 46. North northwest wind around 17 mph, with gusts as high as 26 mph.

    High: 46 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 25. North northwest wind 6 to 11 mph, with gusts as high as 20 mph.

    Low: 25 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 50. Calm wind becoming south 5 to 8 mph in the morning.

    High: 50 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 37. South wind 8 to 10 mph, with gusts as high as 18 mph.

    Low: 37 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 63. South southwest wind 10 to 17 mph, with gusts as high as 26 mph.

    High: 63 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 51. South wind around 11 mph, with gusts as high as 21 mph.

    Low: 51 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 76. South southwest wind 11 to 18 mph, with gusts as high as 29 mph.

    High: 76 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. Breezy.

    High: 79 °F

    Breezy.
    Partly Sunny
    then Chance
    T-storms

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 46. North northwest wind around 17 mph, with gusts as high as 26 mph.
Tonight
Mostly clear, with a low around 25. North northwest wind 6 to 11 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 50. Calm wind becoming south 5 to 8 mph in the morning.
Saturday Night
Partly cloudy, with a low around 37. South wind 8 to 10 mph, with gusts as high as 18 mph.
Sunday
Partly sunny, with a high near 63. South southwest wind 10 to 17 mph, with gusts as high as 26 mph.
Sunday Night
Mostly cloudy, with a low around 51. South wind around 11 mph, with gusts as high as 21 mph.
Monday
Mostly sunny, with a high near 76. South southwest wind 11 to 18 mph, with gusts as high as 29 mph.
Monday Night
Partly cloudy, with a low around 62.
Tuesday
A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. Breezy.
Tuesday Night
Showers and thunderstorms likely before 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 45. Chance of precipitation is 70%.
Wednesday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 57.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 38.
Thursday
Showers likely. Mostly cloudy, with a high near 53.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SE Sullivan IL
 39.56°N 88.53°W (Elev. 650 ft)
Last Update:
1:56 pm CDT Mar 27, 2026
Forecast Valid:
2pm CDT Mar 27, 2026-6pm CDT Apr 2, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation