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

Mattoon / Charleston, Coles County Memorial Airport (KMTO)

Lat: 39.48°NLon: 88.28°WElev: 722ft.

Overcast

46°F

8°C

Humidity 73%
Wind Speed Calm
Barometer 30.11 in (1019.6 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Last update 9 Jan 2:53 pm CST
Extended Forecast for

4 Miles E Janesville IL

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 49. North wind 5 to 10 mph.

    High: 49 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 39. East northeast wind 3 to 5 mph.

    Low: 39 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of rain before 4pm, then a slight chance of rain and snow showers. Cloudy, then gradual clearing during the afternoon, with a high near 43. Light northwest wind becoming west northwest 12 to 17 mph in the morning. Winds could gust as high as 28 mph. Chance of precipitation is 40%.

    High: 43 °F

    Chance Rain
    then Slight
    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 23. West northwest wind 10 to 17 mph, with gusts as high as 31 mph.

    Low: 23 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 34. Northwest wind 13 to 18 mph decreasing to 7 to 12 mph in the afternoon. Winds could gust as high as 31 mph.

    High: 34 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 23. West wind 5 to 9 mph becoming south southwest after midnight. Winds could gust as high as 16 mph.

    Low: 23 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 44. Southwest wind 8 to 14 mph, with gusts as high as 22 mph.

    High: 44 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 50.

    High: 50 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 49. North wind 5 to 10 mph.
Tonight
Mostly cloudy, with a low around 39. East northeast wind 3 to 5 mph.
Saturday
A chance of rain before 4pm, then a slight chance of rain and snow showers. Cloudy, then gradual clearing during the afternoon, with a high near 43. Light northwest wind becoming west northwest 12 to 17 mph in the morning. Winds could gust as high as 28 mph. Chance of precipitation is 40%.
Saturday Night
Partly cloudy, with a low around 23. West northwest wind 10 to 17 mph, with gusts as high as 31 mph.
Sunday
Mostly sunny, with a high near 34. Northwest wind 13 to 18 mph decreasing to 7 to 12 mph in the afternoon. Winds could gust as high as 31 mph.
Sunday Night
Mostly clear, with a low around 23. West wind 5 to 9 mph becoming south southwest after midnight. Winds could gust as high as 16 mph.
Monday
Sunny, with a high near 44. Southwest wind 8 to 14 mph, with gusts as high as 22 mph.
Monday Night
Mostly clear, with a low around 31.
Tuesday
Partly sunny, with a high near 50.
Tuesday Night
Mostly cloudy, with a low around 34.
Wednesday
Mostly cloudy, with a high near 40.
Wednesday Night
Mostly cloudy, with a low around 19.
Thursday
Partly sunny, with a high near 31.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Janesville IL
 39.37°N 88.17°W (Elev. 610 ft)
Last Update:
2:37 pm CST Jan 9, 2026
Forecast Valid:
2pm CST Jan 9, 2026-6pm CST Jan 15, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation