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

56°F

13°C

Humidity 72%
Wind Speed NE 7 mph
Barometer 29.92 in (1012.8 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 20 Mar 11:53 pm CDT
Extended Forecast for

Lerna IL

  • Overnight

    Overnight: Partly cloudy, with a low around 47. East northeast wind around 7 mph.

    Low: 47 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 75. East wind 6 to 8 mph becoming southwest in the afternoon.

    High: 75 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 59. South southwest wind 6 to 11 mph, with gusts as high as 21 mph.

    Low: 59 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 80. South southwest wind 11 to 16 mph becoming west northwest in the afternoon. Winds could gust as high as 26 mph.

    High: 80 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 35. North wind 15 to 18 mph, with gusts as high as 30 mph.

    Low: 35 °F

    Decreasing
    Clouds

  • Monday

    Monday: Sunny, with a high near 52. North wind 10 to 14 mph, with gusts as high as 22 mph.

    High: 52 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 35. North northeast wind around 6 mph becoming east southeast after midnight.

    Low: 35 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 56.

    High: 56 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 47. East northeast wind around 7 mph.
Saturday
Sunny, with a high near 75. East wind 6 to 8 mph becoming southwest in the afternoon.
Saturday Night
Mostly clear, with a low around 59. South southwest wind 6 to 11 mph, with gusts as high as 21 mph.
Sunday
Mostly sunny, with a high near 80. South southwest wind 11 to 16 mph becoming west northwest in the afternoon. Winds could gust as high as 26 mph.
Sunday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 35. North wind 15 to 18 mph, with gusts as high as 30 mph.
Monday
Sunny, with a high near 52. North wind 10 to 14 mph, with gusts as high as 22 mph.
Monday Night
Partly cloudy, with a low around 35. North northeast wind around 6 mph becoming east southeast after midnight.
Tuesday
Partly sunny, with a high near 56.
Tuesday Night
Mostly cloudy, with a low around 40.
Wednesday
Mostly cloudy, with a high near 58.
Wednesday Night
Mostly cloudy, with a low around 47.
Thursday
Mostly sunny, with a high near 74. Breezy.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 38.
Friday
Partly sunny, with a high near 48.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lerna IL
 39.42°N 88.28°W (Elev. 741 ft)
Last Update:
11:41 pm CDT Mar 20, 2026
Forecast Valid:
12am CDT Mar 21, 2026-6pm CDT Mar 27, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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