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

36°F

2°C

Humidity 59%
Wind Speed E 13 G 23 mph
Barometer 30.65 in (1038.7 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 28 Mar 8:53 am CDT
Extended Forecast for

Lerna IL

  • Today

    Today: Sunny, with a high near 51. East northeast wind 6 to 8 mph becoming south in the afternoon.

    High: 51 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 38. South southeast wind 7 to 9 mph, with gusts as high as 20 mph.

    Low: 38 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Partly sunny, with a high near 63. South southwest wind 10 to 16 mph, with gusts as high as 26 mph.

    High: 63 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 52. South wind 10 to 13 mph, with gusts as high as 21 mph.

    Low: 52 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 75. South southwest wind 13 to 18 mph, with gusts as high as 30 mph.

    High: 75 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 62. South wind around 18 mph, with gusts as high as 30 mph.

    Low: 62 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 78. Breezy, with a south southwest wind 18 to 24 mph, with gusts as high as 41 mph.

    High: 78 °F

    Breezy.
    Partly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Rain likely and possibly a thunderstorm, then rain after 1am. Low around 45. Breezy. Chance of precipitation is 90%.

    Low: 45 °F

    Rain and
    Breezy

  • Wednesday

    Wednesday: A 50 percent chance of rain. Mostly cloudy, with a high near 54.

    High: 54 °F

    Chance Rain

Detailed Forecast

Today
Sunny, with a high near 51. East northeast wind 6 to 8 mph becoming south in the afternoon.
Tonight
Increasing clouds, with a low around 38. South southeast wind 7 to 9 mph, with gusts as high as 20 mph.
Sunday
Partly sunny, with a high near 63. South southwest wind 10 to 16 mph, with gusts as high as 26 mph.
Sunday Night
Mostly cloudy, with a low around 52. South wind 10 to 13 mph, with gusts as high as 21 mph.
Monday
Mostly sunny, with a high near 75. South southwest wind 13 to 18 mph, with gusts as high as 30 mph.
Monday Night
Partly cloudy, with a low around 62. South wind around 18 mph, with gusts as high as 30 mph.
Tuesday
A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 78. Breezy, with a south southwest wind 18 to 24 mph, with gusts as high as 41 mph.
Tuesday Night
Rain likely and possibly a thunderstorm, then rain after 1am. Low around 45. Breezy. Chance of precipitation is 90%.
Wednesday
A 50 percent chance of rain. Mostly cloudy, with a high near 54.
Wednesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 37.
Thursday
A chance of rain. Mostly cloudy, with a high near 53.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 41.
Friday
A chance of rain. Mostly cloudy, with a high near 64.
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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:
7:46 am CDT Mar 28, 2026
Forecast Valid:
9am CDT Mar 28, 2026-6pm CDT Apr 3, 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