Current conditions at

Mattoon / Charleston, Coles County Memorial Airport (KMTO)

Lat: 39.48°NLon: 88.28°WElev: 722ft.

Rain Fog/Mist

58°F

14°C

Humidity 97%
Wind Speed S 10 G 21 mph
Barometer 29.89 in (1011.8 mb)
Dewpoint 57°F (14°C)
Visibility 3.00 mi
Last update 7 Mar 7:53 am CST
Extended Forecast for

Sullivan IL

  • Today

    Today: Showers and thunderstorms before 1pm, then a slight chance of showers between 1pm and 3pm.  Temperature rising to near 64 by 11am, then falling to around 49 during the remainder of the day. South wind 15 to 18 mph becoming west northwest in the afternoon. Winds could gust as high as 30 mph.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 64 °F

    Showers then
    Chance
    Showers

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 35. West northwest wind 6 to 13 mph, with gusts as high as 21 mph.

    Low: 35 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 61. Southwest wind 6 to 13 mph, with gusts as high as 21 mph.

    High: 61 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 44. South southwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 44 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 72. South southwest wind 10 to 17 mph, with gusts as high as 28 mph.

    High: 72 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 56. South southwest wind around 11 mph, with gusts as high as 21 mph.

    Low: 56 °F

    Mostly Clear

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm after noon.  Mostly cloudy, with a high near 75. South southwest wind 10 to 18 mph, with gusts as high as 29 mph.  Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 75 °F

    Partly Sunny
    then Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm.  Low around 50. Breezy.  Chance of precipitation is 90%.

    Low: 50 °F

    Showers and
    Breezy

  • Wednesday

    Wednesday: Showers, mainly before noon.  High near 61. Breezy.  Chance of precipitation is 80%.

    High: 61 °F

    Breezy.
    Showers then
    Chance
    Showers

Detailed Forecast

Today
Showers and thunderstorms before 1pm, then a slight chance of showers between 1pm and 3pm. Temperature rising to near 64 by 11am, then falling to around 49 during the remainder of the day. South wind 15 to 18 mph becoming west northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 35. West northwest wind 6 to 13 mph, with gusts as high as 21 mph.
Sunday
Sunny, with a high near 61. Southwest wind 6 to 13 mph, with gusts as high as 21 mph.
Sunday Night
Clear, with a low around 44. South southwest wind around 10 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 72. South southwest wind 10 to 17 mph, with gusts as high as 28 mph.
Monday Night
Mostly clear, with a low around 56. South southwest wind around 11 mph, with gusts as high as 21 mph.
Tuesday
Showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 75. South southwest wind 10 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
Showers and possibly a thunderstorm. Low around 50. Breezy. Chance of precipitation is 90%.
Wednesday
Showers, mainly before noon. High near 61. Breezy. Chance of precipitation is 80%.
Wednesday Night
Mostly cloudy, with a low around 31.
Thursday
Mostly sunny, with a high near 48.
Thursday Night
Mostly cloudy, with a low around 36.
Friday
Partly sunny, with a high near 59. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
Sullivan IL
 39.59°N 88.61°W (Elev. 669 ft)
7:57 am CST Mar 7, 2026
8am CST Mar 7, 2026-6pm CDT Mar 13, 2026
 
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