Current conditions at

Mattoon / Charleston, Coles County Memorial Airport (KMTO)

Lat: 39.48°NLon: 88.28°WElev: 722ft.

Fair

6°F

-14°C

Humidity 57%
Wind Speed W 12 mph
Barometer 30.37 in (1030.4 mb)
Dewpoint -6°F (-21°C)
Visibility 10.00 mi
Wind Chill-10°F (-23°C)
Last update 26 Jan 2:53 pm CST
Extended Forecast for

Sullivan IL

Cold Weather Advisory January 26, 06:00pm until January 27, 06:00am
Click here for hazard details and duration
Cold Weather Advisory
  • This Afternoon

    This Afternoon: Mostly sunny and cold, with a high near 8. Wind chill values between -4 and -9. West southwest wind 8 to 11 mph, with gusts as high as 18 mph.

    High: 8 °F

    Cold

  • Tonight

    Tonight: Patchy blowing snow. Mostly clear, with a temperature rising to around 10 by 5am. Wind chill values between -7 and -15. South southwest wind 8 to 15 mph, with gusts as high as 26 mph.

    Low: 2 °F

    Patchy
    Blowing Snow

  • Tuesday

    Tuesday: Patchy blowing snow before noon. Mostly sunny, with a high near 20. Wind chill values between -4 and 6. West northwest wind 10 to 16 mph, with gusts as high as 26 mph.

    High: 20 °F

    Patchy
    Blowing Snow
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around -8. Wind chill values between -14 and -19. West northwest wind 3 to 6 mph.

    Low: -8 °F

    Mostly Clear

  • Wednesday

    Wednesday: Increasing clouds, with a high near 20. West wind 5 to 9 mph, with gusts as high as 15 mph.

    High: 20 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around -1. West wind around 6 mph becoming north after midnight.

    Low: -1 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 12. North wind around 6 mph.

    High: 12 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -6.

    Low: -6 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny and cold, with a high near 10.

    High: 10 °F

    Cold

Detailed Forecast

This Afternoon
Mostly sunny and cold, with a high near 8. Wind chill values between -4 and -9. West southwest wind 8 to 11 mph, with gusts as high as 18 mph.
Tonight
Patchy blowing snow. Mostly clear, with a temperature rising to around 10 by 5am. Wind chill values between -7 and -15. South southwest wind 8 to 15 mph, with gusts as high as 26 mph.
Tuesday
Patchy blowing snow before noon. Mostly sunny, with a high near 20. Wind chill values between -4 and 6. West northwest wind 10 to 16 mph, with gusts as high as 26 mph.
Tuesday Night
Mostly clear, with a low around -8. Wind chill values between -14 and -19. West northwest wind 3 to 6 mph.
Wednesday
Increasing clouds, with a high near 20. West wind 5 to 9 mph, with gusts as high as 15 mph.
Wednesday Night
Partly cloudy, with a low around -1. West wind around 6 mph becoming north after midnight.
Thursday
Partly sunny, with a high near 12. North wind around 6 mph.
Thursday Night
Partly cloudy, with a low around -6.
Friday
Mostly sunny and cold, with a high near 10.
Friday Night
Partly cloudy, with a low around -3.
Saturday
Mostly sunny, with a high near 16.
Saturday Night
Partly cloudy, with a low around -1.
Sunday
Mostly sunny, with a high near 21.
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ABOUT THIS FORECAST

 
Point Forecast:
Sullivan IL
 39.59°N 88.61°W (Elev. 669 ft)
3:36 pm CST Jan 26, 2026
3pm CST Jan 26, 2026-6pm CST Feb 1, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database