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

59°F

15°C

Humidity 64%
Wind Speed W 14 G 18 mph
Barometer 29.85 in (1011.1 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 10 Feb 11:53 am CST
Extended Forecast for

Lerna IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a temperature falling to around 46 by 5pm. North northwest wind 10 to 14 mph, with gusts as high as 22 mph.

    High: 55 °F⇓

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 26. North northwest wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 26 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 41. Northwest wind 6 to 9 mph, with gusts as high as 16 mph.

    High: 41 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 26. Northwest wind around 5 mph becoming calm in the evening.

    Low: 26 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Cloudy, with a high near 42. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 42 °F

    Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 28. East wind around 6 mph.

    Low: 28 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 46. East southeast wind around 6 mph.

    High: 46 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 30.

    Low: 30 °F

    Partly Cloudy

  • Saturday

    Saturday: A 30 percent chance of rain after noon. Mostly cloudy, with a high near 46.

    High: 46 °F

    Mostly Cloudy
    then Chance
    Rain

Detailed Forecast

This Afternoon
Mostly sunny, with a temperature falling to around 46 by 5pm. North northwest wind 10 to 14 mph, with gusts as high as 22 mph.
Tonight
Mostly clear, with a low around 26. North northwest wind 8 to 10 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 41. Northwest wind 6 to 9 mph, with gusts as high as 16 mph.
Wednesday Night
Increasing clouds, with a low around 26. Northwest wind around 5 mph becoming calm in the evening.
Thursday
Cloudy, with a high near 42. Calm wind becoming southeast around 5 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 28. East wind around 6 mph.
Friday
Mostly sunny, with a high near 46. East southeast wind around 6 mph.
Friday Night
Partly cloudy, with a low around 30.
Saturday
A 30 percent chance of rain after noon. Mostly cloudy, with a high near 46.
Saturday Night
Rain likely, mainly after midnight. Mostly cloudy, with a low around 36. Chance of precipitation is 60%.
Sunday
A chance of rain. Mostly sunny, with a high near 47.
Sunday Night
Partly cloudy, with a low around 31.
Washington's Birthday
Mostly sunny, with a high near 52.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lerna IL
 39.42°N 88.28°W (Elev. 741 ft)
Last Update:
11:36 am CST Feb 10, 2026
Forecast Valid:
12pm CST Feb 10, 2026-6pm CST Feb 16, 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