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.

Fog/Mist

37°F

3°C

Humidity 96%
Wind Speed SE 7 mph
Barometer 30.15 in (1021.6 mb)
Dewpoint 36°F (2°C)
Visibility 5.00 mi
Wind Chill32°F (0°C)
Last update 3 Mar 12:53 am CST
Extended Forecast for

5 Miles S Sullivan IL

  • Overnight

    Overnight: Rain likely, mainly after 5am. Patchy fog after 4am. Otherwise, cloudy, with a low around 35. East southeast wind 3 to 5 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 35 °F

    Rain Likely
    and Patchy
    Fog

  • Tuesday

    Tuesday: Rain and thunderstorms before 4pm, then rain and possibly a thunderstorm, mainly after 4pm. High near 49. Light and variable wind becoming east southeast around 5 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 49 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm. Patchy fog. Low around 44. East northeast wind 5 to 7 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    Low: 44 °F

    Rain and
    Patchy Fog

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm. Patchy fog before 7am. High near 58. East wind 5 to 7 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 58 °F

    Rain and
    Patchy Fog

  • Wednesday Night

    Wednesday Night: Rain and possibly a thunderstorm. Low around 52. Southeast wind 5 to 8 mph becoming south southwest after midnight. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

    Low: 52 °F

    Rain

  • Thursday

    Thursday: Rain, mainly before noon. High near 63. South southwest wind 7 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 63 °F

    Rain then
    Chance Rain

  • Thursday Night

    Thursday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 51. Southwest wind 5 to 8 mph becoming south southeast after midnight.

    Low: 51 °F

    Chance Rain

  • Friday

    Friday: Rain likely, mainly before noon. Mostly cloudy, with a high near 73. Chance of precipitation is 60%.

    High: 73 °F

    Rain Likely

  • Friday Night

    Friday Night: A chance of rain, then rain and possibly a thunderstorm after midnight. Low around 57. Chance of precipitation is 80%.

    Low: 57 °F

    Chance Rain
    then Rain

Detailed Forecast

Overnight
Rain likely, mainly after 5am. Patchy fog after 4am. Otherwise, cloudy, with a low around 35. East southeast wind 3 to 5 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Rain and thunderstorms before 4pm, then rain and possibly a thunderstorm, mainly after 4pm. High near 49. Light and variable wind becoming east southeast around 5 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
Rain and possibly a thunderstorm. Patchy fog. Low around 44. East northeast wind 5 to 7 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Wednesday
Rain and possibly a thunderstorm. Patchy fog before 7am. High near 58. East wind 5 to 7 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
Rain and possibly a thunderstorm. Low around 52. Southeast wind 5 to 8 mph becoming south southwest after midnight. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Thursday
Rain, mainly before noon. High near 63. South southwest wind 7 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 51. Southwest wind 5 to 8 mph becoming south southeast after midnight.
Friday
Rain likely, mainly before noon. Mostly cloudy, with a high near 73. Chance of precipitation is 60%.
Friday Night
A chance of rain, then rain and possibly a thunderstorm after midnight. Low around 57. Chance of precipitation is 80%.
Saturday
Rain likely and possibly a thunderstorm before noon. Mostly cloudy, with a high near 66. Chance of precipitation is 70%.
Saturday Night
Mostly cloudy, with a low around 42.
Sunday
Mostly sunny, with a high near 62.
Sunday Night
Mostly clear, with a low around 46.
Monday
Sunny, with a high near 67.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles S Sullivan IL
 39.52°N 88.59°W (Elev. 617 ft)
Last Update:
12:31 am CST Mar 3, 2026
Forecast Valid:
1am CST Mar 3, 2026-6pm CDT Mar 9, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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