National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Mattoon / Charleston, Coles County Memorial Airport (KMTO)

Lat: 39.48°NLon: 88.28°WElev: 722ft.

Fair

2°F

-17°C

Humidity 38%
Wind Speed N 16 G 31 mph
Barometer 30.66 in (1039.9 mb)
Dewpoint -18°F (-28°C)
Visibility 10.00 mi
Wind Chill-17°F (-27°C)
Last update 23 Jan 6:53 pm CST
Extended Forecast for

Sullivan IL

Cold Weather Advisory January 23, 07:36pm until January 24, 12:00pm
Winter Storm Warning January 24, 09:00am until January 26, 12:00am
Click here for hazard details and duration
Cold Weather Advisory
Winter Storm Warning
  •  
    Cold Weather Advisory January 23, 07:36pm until January 24, 12:00pm

    NOW until 12:00pm Sat

    Cold Weather Advisory

  • Tonight

    Low: -1 °F

    Mostly Cloudy

  • Saturday

    Saturday: Snow likely, mainly after 1pm. Cloudy, with a high near 11. Wind chill values between -5 and -15. East northeast wind around 10 mph, with gusts as high as 17 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.

    High: 11 °F

    Chance Snow
    then Snow
    Likely

  • Saturday Night

    Saturday Night: Snow, mainly after 9pm. Low around 8. Wind chill values between -1 and -6. East northeast wind 9 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    Low: 8 °F

    Snow

  • Sunday

    Sunday: Snow. High near 14. Wind chill values between -7 and zero. North wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    High: 14 °F

    Snow then
    Snow Likely

  • Sunday Night

    Sunday Night: A 30 percent chance of snow before midnight. Cloudy, then gradually becoming partly cloudy, with a low around -2. Northwest wind around 11 mph, with gusts as high as 20 mph.

    Low: -2 °F

    Chance Snow
    then Partly
    Cloudy

  • Monday

    Monday: Mostly sunny and cold, with a high near 9. West northwest wind 8 to 13 mph, with gusts as high as 20 mph.

    High: 9 °F

    Cold

  • Monday Night

    Monday Night: Mostly clear, with a low around -2. Southwest wind 7 to 13 mph, with gusts as high as 21 mph.

    Low: -2 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 23.

    High: 23 °F

    Mostly Sunny

Detailed Forecast

Tonight
Mostly cloudy, with a low around -1. Wind chill values between -12 and -17. North northeast wind around 10 mph, with gusts as high as 16 mph.
Saturday
Snow likely, mainly after 1pm. Cloudy, with a high near 11. Wind chill values between -5 and -15. East northeast wind around 10 mph, with gusts as high as 17 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Saturday Night
Snow, mainly after 9pm. Low around 8. Wind chill values between -1 and -6. East northeast wind 9 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Sunday
Snow. High near 14. Wind chill values between -7 and zero. North wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Sunday Night
A 30 percent chance of snow before midnight. Cloudy, then gradually becoming partly cloudy, with a low around -2. Northwest wind around 11 mph, with gusts as high as 20 mph.
Monday
Mostly sunny and cold, with a high near 9. West northwest wind 8 to 13 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around -2. Southwest wind 7 to 13 mph, with gusts as high as 21 mph.
Tuesday
Mostly sunny, with a high near 23.
Tuesday Night
Partly cloudy, with a low around 0.
Wednesday
Partly sunny, with a high near 16.
Wednesday Night
Partly cloudy, with a low around -1.
Thursday
Mostly sunny, with a high near 13.
Thursday Night
Partly cloudy, with a low around -1.
Friday
Mostly sunny, with a high near 15.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sullivan IL
 39.59°N 88.61°W (Elev. 669 ft)
Last Update:
6:36 pm CST Jan 23, 2026
Forecast Valid:
7pm CST Jan 23, 2026-6pm CST Jan 30, 2026
 
Forecast Discussion
 
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Additional Resources

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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