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.

Fog

39°F

4°C

Humidity 100%
Wind Speed SE 13 mph
Barometer 30.12 in (1020.5 mb)
Dewpoint 39°F (4°C)
Visibility 0.50 mi
Wind Chill31°F (-1°C)
Last update 24 Nov 6:53 am CST
Extended Forecast for

Janesville IL

Dense Fog Advisory November 24, 07:37am until November 24, 10:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory November 24, 07:37am until November 24, 10:00am

    NOW until 10:00am Mon

    Dense Fog Advisory

  • Today

    High: 52 °F

    Areas Dense
    Fog then
    Slight Chance
    Rain

  • Tonight

    Tonight: Rain, mainly after 9pm. Low around 47. Southeast wind 5 to 7 mph, with gusts as high as 15 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 47 °F

    Rain

  • Tuesday

    Tuesday: A 30 percent chance of rain, mainly before noon. Mostly cloudy, with a high near 59. Light and variable wind becoming west 5 to 7 mph in the morning.

    High: 59 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 34. West wind 6 to 11 mph increasing to 12 to 17 mph after midnight. Winds could gust as high as 28 mph.

    Low: 34 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 41. Breezy, with a west wind 14 to 23 mph, with gusts as high as 36 mph.

    High: 41 °F

    Mostly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 24. West northwest wind around 11 mph, with gusts as high as 24 mph.

    Low: 24 °F

    Mostly Clear

  • Thanksgiving Day

    Thanksgiving Day: Sunny, with a high near 36. West northwest wind 9 to 15 mph, with gusts as high as 24 mph.

    High: 36 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 18.

    Low: 18 °F

    Mostly Clear

Detailed Forecast

Today
A 20 percent chance of rain after 3pm. Areas of dense fog before 11am. Otherwise, cloudy, with a high near 52. South southeast wind 7 to 9 mph.
Tonight
Rain, mainly after 9pm. Low around 47. Southeast wind 5 to 7 mph, with gusts as high as 15 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
A 30 percent chance of rain, mainly before noon. Mostly cloudy, with a high near 59. Light and variable wind becoming west 5 to 7 mph in the morning.
Tuesday Night
Mostly cloudy, with a low around 34. West wind 6 to 11 mph increasing to 12 to 17 mph after midnight. Winds could gust as high as 28 mph.
Wednesday
Mostly sunny, with a high near 41. Breezy, with a west wind 14 to 23 mph, with gusts as high as 36 mph.
Wednesday Night
Mostly clear, with a low around 24. West northwest wind around 11 mph, with gusts as high as 24 mph.
Thanksgiving Day
Sunny, with a high near 36. West northwest wind 9 to 15 mph, with gusts as high as 24 mph.
Thursday Night
Mostly clear, with a low around 18.
Friday
Mostly sunny, with a high near 36.
Friday Night
A 30 percent chance of snow after midnight. Mostly cloudy, with a low around 24.
Saturday
Rain and snow likely. Mostly cloudy, with a high near 37.
Saturday Night
Rain likely. Cloudy, with a low around 32.
Sunday
A chance of rain. Mostly cloudy, with a high near 44.
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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:
6:36 am CST Nov 24, 2025
Forecast Valid:
7am CST Nov 24, 2025-6pm CST Nov 30, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation