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.

A Few Clouds

77°F

25°C

Humidity 79%
Wind Speed SE 5 mph
Barometer 30.00 in (1015.3 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 15 Jun 6:53 pm CDT
Extended Forecast for

3 Miles S Janesville IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 68. North northeast wind around 5 mph becoming calm in the evening.

    Low: 68 °F

    Mostly Cloudy

  • Monday

    Monday: Isolated showers between 10am and 1pm, then scattered showers and thunderstorms after 1pm. Mostly cloudy, with a high near 82. Light and variable wind becoming south southeast 5 to 7 mph in the morning. Chance of precipitation is 40%.

    High: 82 °F

    Isolated
    Showers then
    Scattered
    T-storms

  • Monday Night

    Monday Night: Isolated showers and thunderstorms before 10pm. Mostly cloudy, with a low around 67. South southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 67 °F

    Isolated
    T-storms then
    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 87. West southwest wind 3 to 6 mph.

    High: 87 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 71. South wind around 7 mph, with gusts as high as 15 mph.

    Low: 71 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 85. Southwest wind 9 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 85 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely before 1am. Mostly cloudy, with a low around 69. South southwest wind 7 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 69 °F

    T-storms
    Likely

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 68. North northeast wind around 5 mph becoming calm in the evening.
Monday
Isolated showers between 10am and 1pm, then scattered showers and thunderstorms after 1pm. Mostly cloudy, with a high near 82. Light and variable wind becoming south southeast 5 to 7 mph in the morning. Chance of precipitation is 40%.
Monday Night
Isolated showers and thunderstorms before 10pm. Mostly cloudy, with a low around 67. South southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Tuesday
Mostly sunny, with a high near 87. West southwest wind 3 to 6 mph.
Tuesday Night
Mostly cloudy, with a low around 71. South wind around 7 mph, with gusts as high as 15 mph.
Wednesday
Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 85. Southwest wind 9 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
Showers and thunderstorms likely before 1am. Mostly cloudy, with a low around 69. South southwest wind 7 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Juneteenth
Mostly sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 64.
Friday
Sunny, with a high near 86.
Friday Night
Mostly clear, with a low around 70.
Saturday
Sunny, with a high near 91.
Saturday Night
Mostly clear, with a low around 73.
Sunday
Sunny, with a high near 92.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Janesville IL
 39.33°N 88.26°W (Elev. 591 ft)
Last Update:
6:56 pm CDT Jun 15, 2025
Forecast Valid:
7pm CDT Jun 15, 2025-6pm CDT Jun 22, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation