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 and Breezy

38°F

3°C

Humidity 83%
Wind Speed N 21 G 35 mph
Barometer 30.36 in (1028.3 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 27 Mar 10:53 am CDT
Extended Forecast for

Lerna IL

  • Today

    Today: Cloudy, then gradually becoming mostly sunny, with a high near 47. North wind around 17 mph, with gusts as high as 26 mph.

    High: 47 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Mostly clear, with a low around 26. North northwest wind 7 to 13 mph, with gusts as high as 21 mph.

    Low: 26 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 49. Calm wind becoming south 5 to 7 mph in the morning.

    High: 49 °F

    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 38. South wind 7 to 10 mph, with gusts as high as 20 mph.

    Low: 38 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy, with a high near 62. South southwest wind 10 to 16 mph, with gusts as high as 25 mph.

    High: 62 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 51. South wind around 11 mph, with gusts as high as 22 mph.

    Low: 51 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 76. South southwest wind 13 to 16 mph, with gusts as high as 25 mph.

    High: 76 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 30 percent chance of rain and thunderstorms after 1am. Mostly cloudy, with a low around 62.

    Low: 62 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Tuesday

    Tuesday: A 30 percent chance of rain after 1pm. Partly sunny, with a high near 79. Breezy.

    High: 79 °F

    Breezy.
    Partly Sunny
    then Chance
    Rain

Detailed Forecast

Today
Cloudy, then gradually becoming mostly sunny, with a high near 47. North wind around 17 mph, with gusts as high as 26 mph.
Tonight
Mostly clear, with a low around 26. North northwest wind 7 to 13 mph, with gusts as high as 21 mph.
Saturday
Sunny, with a high near 49. Calm wind becoming south 5 to 7 mph in the morning.
Saturday Night
Increasing clouds, with a low around 38. South wind 7 to 10 mph, with gusts as high as 20 mph.
Sunday
Mostly cloudy, with a high near 62. South southwest wind 10 to 16 mph, with gusts as high as 25 mph.
Sunday Night
Mostly cloudy, with a low around 51. South wind around 11 mph, with gusts as high as 22 mph.
Monday
Mostly sunny, with a high near 76. South southwest wind 13 to 16 mph, with gusts as high as 25 mph.
Monday Night
A 30 percent chance of rain and thunderstorms after 1am. Mostly cloudy, with a low around 62.
Tuesday
A 30 percent chance of rain after 1pm. Partly sunny, with a high near 79. Breezy.
Tuesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 61.
Wednesday
A chance of rain and thunderstorms. Partly sunny, with a high near 70. Breezy.
Wednesday Night
Rain and thunderstorms likely. Mostly cloudy, with a low around 53.
Thursday
Rain likely. Mostly cloudy, with a high near 63.
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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:
11:42 am CDT Mar 27, 2026
Forecast Valid:
11am CDT Mar 27, 2026-6pm CDT Apr 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation