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.

Mostly Cloudy

62°F

17°C

Humidity 62%
Wind Speed SW 9 mph
Barometer 30.16 in (1021.0 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 10 Apr 7:53 am CDT
Extended Forecast for

Lerna IL

  • Today

    Today: Showers and thunderstorms likely, mainly before 2pm. Cloudy, with a high near 67. Southwest wind 10 to 13 mph becoming north northwest in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 67 °F

    Showers
    Likely then
    Chance
    Showers

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 45. Northeast wind 7 to 9 mph, with gusts as high as 17 mph.

    Low: 45 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Partly sunny, with a high near 66. East northeast wind 7 to 10 mph, with gusts as high as 17 mph.

    High: 66 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 57. Southeast wind 7 to 11 mph, with gusts as high as 20 mph.

    Low: 57 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 78. Breezy, with a south southwest wind 11 to 16 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 37 mph.

    High: 78 °F

    Partly Sunny
    then Mostly
    Cloudy and
    Breezy

  • Sunday Night

    Sunday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 63. South southwest wind around 18 mph, with gusts as high as 30 mph.

    Low: 63 °F

    Chance
    Showers

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 78. South southwest wind 16 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.

    High: 78 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 66.

    Low: 66 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82.

    High: 82 °F

    Partly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Showers and thunderstorms likely, mainly before 2pm. Cloudy, with a high near 67. Southwest wind 10 to 13 mph becoming north northwest in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 45. Northeast wind 7 to 9 mph, with gusts as high as 17 mph.
Saturday
Partly sunny, with a high near 66. East northeast wind 7 to 10 mph, with gusts as high as 17 mph.
Saturday Night
Mostly cloudy, with a low around 57. Southeast wind 7 to 11 mph, with gusts as high as 20 mph.
Sunday
Partly sunny, with a high near 78. Breezy, with a south southwest wind 11 to 16 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 37 mph.
Sunday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 63. South southwest wind around 18 mph, with gusts as high as 30 mph.
Monday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 78. South southwest wind 16 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Monday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 66.
Tuesday
A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82.
Tuesday Night
A chance of showers and thunderstorms, then showers likely after 1am. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Wednesday
A chance of showers. Mostly cloudy, with a high near 79.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 58.
Thursday
A chance of showers. Partly sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lerna IL
 39.42°N 88.28°W (Elev. 741 ft)
Last Update:
7:36 am CDT Apr 10, 2026
Forecast Valid:
8am CDT Apr 10, 2026-6pm CDT Apr 16, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation