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.

Overcast

27°F

-3°C

Humidity 78%
Wind Speed E 6 mph
Barometer 30.36 in (1029.1 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 28 Nov 10:53 pm CST
Extended Forecast for

Janesville IL

Winter Storm Warning November 29, 06:00am until November 30, 06:00am
Click here for hazard details and duration
Winter Storm Warning

  • Tonight

    Tonight: A 40 percent chance of snow, mainly after 4am. Cloudy, with a low around 25. Light southeast wind increasing to 5 to 10 mph after midnight. Winds could gust as high as 17 mph.

    Low: 25 °F

    Chance Snow

  • Saturday

    Saturday: Snow, possibly mixed with sleet before 5pm, then snow, possibly mixed with rain. High near 36. Breezy, with a south southeast wind 11 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 3 to 5 inches possible.

    High: 36 °F

    Snow then
    Wintry Mix
    and Breezy

  • Saturday Night

    Saturday Night: Rain and snow before 3am, then a chance of snow. Low around 25. Breezy, with a south wind 17 to 21 mph becoming west after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    Low: 25 °F

    Rain/Snow
    then Chance
    Rain/Snow and
    Breezy

  • Sunday

    Sunday: Mostly cloudy, with a high near 28. Breezy, with a west northwest wind 11 to 20 mph, with gusts as high as 29 mph.

    High: 28 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 15. Northwest wind 5 to 9 mph becoming light and variable after midnight. Winds could gust as high as 15 mph.

    Low: 15 °F

    Mostly Cloudy

  • Monday

    Monday: Cloudy, with a high near 28. Light and variable wind.

    High: 28 °F

    Cloudy

  • Monday Night

    Monday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 18. Calm wind becoming north northwest around 5 mph after midnight.

    Low: 18 °F

    Chance Snow

  • Tuesday

    Tuesday: Partly sunny, with a high near 25.

    High: 25 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 13.

    Low: 13 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A 40 percent chance of snow, mainly after 4am. Cloudy, with a low around 25. Light southeast wind increasing to 5 to 10 mph after midnight. Winds could gust as high as 17 mph.
Saturday
Snow, possibly mixed with sleet before 5pm, then snow, possibly mixed with rain. High near 36. Breezy, with a south southeast wind 11 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 3 to 5 inches possible.
Saturday Night
Rain and snow before 3am, then a chance of snow. Low around 25. Breezy, with a south wind 17 to 21 mph becoming west after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Sunday
Mostly cloudy, with a high near 28. Breezy, with a west northwest wind 11 to 20 mph, with gusts as high as 29 mph.
Sunday Night
Mostly cloudy, with a low around 15. Northwest wind 5 to 9 mph becoming light and variable after midnight. Winds could gust as high as 15 mph.
Monday
Cloudy, with a high near 28. Light and variable wind.
Monday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 18. Calm wind becoming north northwest around 5 mph after midnight.
Tuesday
Partly sunny, with a high near 25.
Tuesday Night
Mostly cloudy, with a low around 13.
Wednesday
Partly sunny, with a high near 33.
Wednesday Night
Mostly cloudy, with a low around 16.
Thursday
Partly sunny, with a high near 25.
Thursday Night
Mostly cloudy, with a low around 13.
Friday
Mostly cloudy, with a high near 32.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Janesville IL
 39.37°N 88.25°W (Elev. 669 ft)
Last Update:
8:37 pm CST Nov 28, 2025
Forecast Valid:
11pm CST Nov 28, 2025-6pm CST Dec 5, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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