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

45°F

7°C

Humidity 66%
Wind Speed SW 6 mph
Barometer 30.27 in (1025.3 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 5 Apr 10:53 pm CDT
Extended Forecast for

Lerna IL

  • Tonight

    Tonight: Clear, with a low around 38. West southwest wind 6 to 8 mph, with gusts as high as 15 mph.

    Low: 38 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 56. Northwest wind 9 to 14 mph, with gusts as high as 22 mph.

    High: 56 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 34. North northwest wind around 10 mph, with gusts as high as 18 mph.

    Low: 34 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 48. East northeast wind 8 to 10 mph, with gusts as high as 16 mph.

    High: 48 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 36. East wind 6 to 10 mph, with gusts as high as 18 mph.

    Low: 36 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 67. South wind 10 to 16 mph, with gusts as high as 25 mph.

    High: 67 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 52. South wind 11 to 14 mph, with gusts as high as 24 mph.

    Low: 52 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 69.

    High: 69 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Clear, with a low around 38. West southwest wind 6 to 8 mph, with gusts as high as 15 mph.
Monday
Sunny, with a high near 56. Northwest wind 9 to 14 mph, with gusts as high as 22 mph.
Monday Night
Mostly cloudy, with a low around 34. North northwest wind around 10 mph, with gusts as high as 18 mph.
Tuesday
Mostly sunny, with a high near 48. East northeast wind 8 to 10 mph, with gusts as high as 16 mph.
Tuesday Night
Mostly cloudy, with a low around 36. East wind 6 to 10 mph, with gusts as high as 18 mph.
Wednesday
Mostly sunny, with a high near 67. South wind 10 to 16 mph, with gusts as high as 25 mph.
Wednesday Night
Partly cloudy, with a low around 52. South wind 11 to 14 mph, with gusts as high as 24 mph.
Thursday
Partly sunny, with a high near 69.
Thursday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 54.
Friday
A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 71.
Friday Night
A chance of showers. Mostly cloudy, with a low around 53.
Saturday
A chance of showers. Partly sunny, with a high near 74.
Saturday Night
Mostly cloudy, with a low around 58.
Sunday
A chance of showers. Mostly cloudy, with a high near 78.
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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:
10:36 pm CDT Apr 5, 2026
Forecast Valid:
11pm CDT Apr 5, 2026-6pm CDT Apr 12, 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