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

33°F

1°C

Humidity 66%
Wind Speed SW 3 mph
Barometer 30.28 in (1026.0 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Last update 11 Feb 8:53 pm CST
Extended Forecast for

Lerna IL

  • Tonight

    Tonight: Partly cloudy, with a low around 28. Northwest wind around 5 mph becoming calm in the evening.

    Low: 28 °F

    Partly Cloudy

  • Thursday

    Thursday: Cloudy, then gradually becoming mostly sunny, with a high near 46. Calm wind becoming south southwest around 5 mph.

    High: 46 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 28. Calm wind becoming south southeast around 5 mph after midnight.

    Low: 28 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 49. South wind 5 to 9 mph, with gusts as high as 15 mph.

    High: 49 °F

    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 31. South wind around 6 mph.

    Low: 31 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly cloudy, with a high near 50. South southeast wind 5 to 7 mph.

    High: 50 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 38. East southeast wind 6 to 8 mph becoming northeast after midnight.

    Low: 38 °F

    Chance Rain

  • Sunday

    Sunday: Mostly sunny, with a high near 53.

    High: 53 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 32.

    Low: 32 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 28. Northwest wind around 5 mph becoming calm in the evening.
Thursday
Cloudy, then gradually becoming mostly sunny, with a high near 46. Calm wind becoming south southwest around 5 mph.
Thursday Night
Partly cloudy, with a low around 28. Calm wind becoming south southeast around 5 mph after midnight.
Friday
Sunny, with a high near 49. South wind 5 to 9 mph, with gusts as high as 15 mph.
Friday Night
Increasing clouds, with a low around 31. South wind around 6 mph.
Saturday
Mostly cloudy, with a high near 50. South southeast wind 5 to 7 mph.
Saturday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 38. East southeast wind 6 to 8 mph becoming northeast after midnight.
Sunday
Mostly sunny, with a high near 53.
Sunday Night
Mostly clear, with a low around 32.
Washington's Birthday
Partly sunny, with a high near 55.
Monday Night
Mostly cloudy, with a low around 39.
Tuesday
Mostly cloudy, with a high near 59.
Tuesday Night
Mostly cloudy, with a low around 50.
Wednesday
A chance of rain. Mostly sunny, with a high near 63. 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:
9:36 pm CST Feb 11, 2026
Forecast Valid:
9pm CST Feb 11, 2026-6pm CST Feb 18, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation