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.

Light Snow Fog/Mist

33°F

1°C

Humidity 96%
Wind Speed SE 20 G 36 mph
Barometer 29.94 in (1014.6 mb)
Dewpoint 32°F (0°C)
Visibility 3.00 mi
Wind Chill21°F (-6°C)
Last update 29 Nov 5:53 pm CST
Extended Forecast for

Janesville IL

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

    NOW until 6:00am Sun

    Winter Storm Warning

  • Tonight

    Low: 24 °F

    Breezy.
    Rain/Snow
    then Slight
    Chance Rain

  • Sunday

    Sunday: Cloudy, with a high near 27. Breezy, with a west wind 10 to 20 mph, with gusts as high as 31 mph.

    High: 27 °F

    Cloudy and
    Breezy then
    Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 18. Northwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 17 mph.

    Low: 18 °F

    Mostly Cloudy

  • Monday

    Monday: A 30 percent chance of snow after noon. Cloudy, with a high near 30. Light east wind.

    High: 30 °F

    Cloudy then
    Chance Snow

  • Monday Night

    Monday Night: Snow, mainly before midnight. Low around 20. Calm wind becoming north northwest around 5 mph after midnight. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    Low: 20 °F

    Snow then
    Chance Snow

  • Tuesday

    Tuesday: Partly sunny, with a high near 24. North northwest wind 3 to 6 mph.

    High: 24 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 13. Calm wind becoming south around 5 mph after midnight.

    Low: 13 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 33.

    High: 33 °F

    Mostly Sunny

Detailed Forecast

Tonight
Rain and snow before 10pm, then a chance of rain between 10pm and 1am. Low around 24. Breezy, with a south southeast wind 18 to 22 mph becoming west after midnight. Winds could gust as high as 33 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of less than a half inch possible.
Sunday
Cloudy, with a high near 27. Breezy, with a west wind 10 to 20 mph, with gusts as high as 31 mph.
Sunday Night
Mostly cloudy, with a low around 18. Northwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 17 mph.
Monday
A 30 percent chance of snow after noon. Cloudy, with a high near 30. Light east wind.
Monday Night
Snow, mainly before midnight. Low around 20. Calm wind becoming north northwest around 5 mph after midnight. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Tuesday
Partly sunny, with a high near 24. North northwest wind 3 to 6 mph.
Tuesday Night
Mostly cloudy, with a low around 13. Calm wind becoming south around 5 mph after midnight.
Wednesday
Mostly sunny, with a high near 33.
Wednesday Night
Mostly cloudy, with a low around 16.
Thursday
Partly sunny, with a high near 24.
Thursday Night
Mostly cloudy, with a low around 10.
Friday
Partly sunny, with a high near 31.
Friday Night
Mostly cloudy, with a low around 18.
Saturday
Partly sunny, with a high near 34.
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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:
4:57 pm CST Nov 29, 2025
Forecast Valid:
6pm CST Nov 29, 2025-6pm CST Dec 6, 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