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

26°F

-3°C

Humidity 75%
Wind Speed N 16 G 26 mph
Barometer 30.25 in (1025.3 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill14°F (-10°C)
Last update 4 Dec 1:53 am CST
Extended Forecast for

Janesville IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 10. Wind chill values between zero and 5. North wind 11 to 13 mph, with gusts as high as 21 mph.

    Low: 10 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 18. Wind chill values between -4 and 6. North wind 5 to 10 mph becoming light in the afternoon. Winds could gust as high as 16 mph.

    High: 18 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 7. Calm wind.

    Low: 7 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 31. Calm wind becoming south 5 to 7 mph in the morning.

    High: 31 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 23. South wind around 7 mph becoming west southwest after midnight.

    Low: 23 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 33. Southwest wind around 5 mph becoming calm in the afternoon.

    High: 33 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 21. Calm wind becoming north northeast 5 to 7 mph after midnight.

    Low: 21 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 30.

    High: 30 °F

    Mostly Cloudy

  • Sunday Night

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

    Low: 13 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 10. Wind chill values between zero and 5. North wind 11 to 13 mph, with gusts as high as 21 mph.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 18. Wind chill values between -4 and 6. North wind 5 to 10 mph becoming light in the afternoon. Winds could gust as high as 16 mph.
Thursday Night
Partly cloudy, with a low around 7. Calm wind.
Friday
Mostly sunny, with a high near 31. Calm wind becoming south 5 to 7 mph in the morning.
Friday Night
Mostly cloudy, with a low around 23. South wind around 7 mph becoming west southwest after midnight.
Saturday
Partly sunny, with a high near 33. Southwest wind around 5 mph becoming calm in the afternoon.
Saturday Night
Mostly cloudy, with a low around 21. Calm wind becoming north northeast 5 to 7 mph after midnight.
Sunday
Mostly cloudy, with a high near 30.
Sunday Night
Mostly cloudy, with a low around 13.
Monday
Mostly sunny, with a high near 26.
Monday Night
Mostly cloudy, with a low around 18.
Tuesday
Partly sunny, with a high near 36.
Tuesday Night
Mostly cloudy, with a low around 27.
Wednesday
A chance of rain. Partly sunny, with a high near 42.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Janesville IL
 39.37°N 88.25°W (Elev. 669 ft)
Last Update:
2:16 am CST Dec 4, 2025
Forecast Valid:
2am CST Dec 4, 2025-6pm CST Dec 10, 2025
 
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Additional Resources

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Chance of Precipitation