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.

Fair

71°F

22°C

Humidity 34%
Wind Speed S 8 mph
Barometer 30.03 in (1016.8 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 19 Mar 3:53 pm CDT
Extended Forecast for

Lerna IL

  • Tonight

    Tonight: Partly cloudy, with a low around 49. South wind 6 to 9 mph, with gusts as high as 16 mph.

    Low: 49 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 76. Southwest wind 9 to 13 mph becoming west northwest in the afternoon. Winds could gust as high as 21 mph.

    High: 76 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 44. Northwest wind around 7 mph becoming northeast after midnight.

    Low: 44 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 74. East northeast wind 5 to 7 mph becoming southwest in the afternoon.

    High: 74 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 55. South southwest wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 55 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 80. Breezy, with a south southwest wind 13 to 20 mph, with gusts as high as 31 mph.

    High: 80 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 37. North wind 15 to 17 mph, with gusts as high as 28 mph.

    Low: 37 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 52.

    High: 52 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 49. South wind 6 to 9 mph, with gusts as high as 16 mph.
Friday
Mostly sunny, with a high near 76. Southwest wind 9 to 13 mph becoming west northwest in the afternoon. Winds could gust as high as 21 mph.
Friday Night
Mostly cloudy, with a low around 44. Northwest wind around 7 mph becoming northeast after midnight.
Saturday
Sunny, with a high near 74. East northeast wind 5 to 7 mph becoming southwest in the afternoon.
Saturday Night
Mostly clear, with a low around 55. South southwest wind 6 to 10 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny, with a high near 80. Breezy, with a south southwest wind 13 to 20 mph, with gusts as high as 31 mph.
Sunday Night
Partly cloudy, with a low around 37. North wind 15 to 17 mph, with gusts as high as 28 mph.
Monday
Mostly sunny, with a high near 52.
Monday Night
Partly cloudy, with a low around 35.
Tuesday
Mostly cloudy, with a high near 55.
Tuesday Night
Mostly cloudy, with a low around 39.
Wednesday
Partly sunny, with a high near 61.
Wednesday Night
Partly cloudy, with a low around 50.
Thursday
Mostly sunny, with a high near 71. Breezy.
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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:
3:36 pm CDT Mar 19, 2026
Forecast Valid:
4pm CDT Mar 19, 2026-6pm CDT Mar 26, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database Weather Element Forecast

Chance of Precipitation