Current conditions at

Mattoon / Charleston, Coles County Memorial Airport (KMTO)

Lat: 39.48°NLon: 88.28°WElev: 722ft.

Light Snow Fog/Mist

26°F

-3°C

Humidity 92%
Wind Speed E 5 mph
Barometer 30.19 in (1023.2 mb)
Dewpoint 24°F (-4°C)
Visibility 0.75 mi
Wind Chill20°F (-7°C)
Last update 1 Dec 2:53 pm CST
Extended Forecast for

Janesville IL

Winter Weather Advisory until December 2, 06:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory until December 2, 06:00am

    NOW until 6:00am Tue

    Winter Weather Advisory

  • This Afternoon

    High: 29 °F

    Snow

  • Tonight

    Tonight: Snow, mainly before 1am.  Low around 17. Calm wind becoming northwest 5 to 8 mph after midnight.  Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    Low: 17 °F

    Snow

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 23. Northwest wind 5 to 8 mph becoming calm  in the afternoon.

    High: 23 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 15. Calm wind becoming south 5 to 7 mph after midnight.

    Low: 15 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 34. South wind 6 to 10 mph, with gusts as high as 17 mph.

    High: 34 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 8. West southwest wind 6 to 11 mph becoming north northwest after midnight. Winds could gust as high as 18 mph.

    Low: 8 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 16. North northwest wind 5 to 10 mph becoming light north  in the afternoon. Winds could gust as high as 17 mph.

    High: 16 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 2.

    Low: 2 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Snow. High near 29. Light east wind. Chance of precipitation is 100%. Total daytime snow accumulation of 1 to 2 inches possible.
Tonight
Snow, mainly before 1am. Low around 17. Calm wind becoming northwest 5 to 8 mph after midnight. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Tuesday
Mostly cloudy, with a high near 23. Northwest wind 5 to 8 mph becoming calm in the afternoon.
Tuesday Night
Partly cloudy, with a low around 15. Calm wind becoming south 5 to 7 mph after midnight.
Wednesday
Partly sunny, with a high near 34. South wind 6 to 10 mph, with gusts as high as 17 mph.
Wednesday Night
Mostly cloudy, with a low around 8. West southwest wind 6 to 11 mph becoming north northwest after midnight. Winds could gust as high as 18 mph.
Thursday
Sunny, with a high near 16. North northwest wind 5 to 10 mph becoming light north in the afternoon. Winds could gust as high as 17 mph.
Thursday Night
Partly cloudy, with a low around 2.
Friday
Mostly sunny, with a high near 30.
Friday Night
Partly cloudy, with a low around 20.
Saturday
Mostly cloudy, with a high near 32.
Saturday Night
Mostly cloudy, with a low around 22.
Sunday
Mostly cloudy, with a high near 32.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Janesville IL
 39.37°N 88.25°W (Elev. 669 ft)
2:52 pm CST Dec 1, 2025
3pm CST Dec 1, 2025-6pm CST Dec 7, 2025
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database