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Current conditions at

Mattoon / Charleston, Coles County Memorial Airport (KMTO)

Lat: 39.48°NLon: 88.28°WElev: 722ft.

Fair

58°F

14°C

Humidity 72%
Wind Speed Calm
Barometer 30.11 in (1019.3 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 8 Oct 9:53 pm CDT
Extended Forecast for

Lerna IL

  • Tonight

    Tonight: Clear, with a low around 52. Light and variable wind.

    Low: 52 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 85. South wind 5 to 10 mph, with gusts as high as 16 mph.

    High: 85 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 58. South southeast wind around 7 mph.

    Low: 58 °F

    Mostly Clear

  • Saturday

    Saturday: Increasing clouds, with a high near 81. South southeast wind 6 to 9 mph.

    High: 81 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: Showers likely, mainly after 1am. Mostly cloudy, with a low around 58. East southeast wind 8 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 58 °F

    Showers
    Likely

  • Sunday

    Sunday: A 30 percent chance of showers before 1pm. Mostly cloudy, with a high near 75. East wind 5 to 8 mph becoming north northwest in the afternoon.

    High: 75 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 57. Light and variable wind.

    Low: 57 °F

    Partly Cloudy

  • Columbus Day

    Columbus Day: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

Detailed Forecast

Tonight
Clear, with a low around 52. Light and variable wind.
Friday
Sunny, with a high near 85. South wind 5 to 10 mph, with gusts as high as 16 mph.
Friday Night
Mostly clear, with a low around 58. South southeast wind around 7 mph.
Saturday
Increasing clouds, with a high near 81. South southeast wind 6 to 9 mph.
Saturday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 58. East southeast wind 8 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
A 30 percent chance of showers before 1pm. Mostly cloudy, with a high near 75. East wind 5 to 8 mph becoming north northwest in the afternoon.
Sunday Night
Partly cloudy, with a low around 57. Light and variable wind.
Columbus Day
Sunny, with a high near 86.
Monday Night
Mostly clear, with a low around 64.
Tuesday
Sunny, with a high near 82.
Tuesday Night
Partly cloudy, with a low around 55.
Wednesday
Partly sunny, with a high near 76.
Wednesday Night
Partly cloudy, with a low around 57.
Thursday
A chance of showers. Mostly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lerna IL
 39.42°N 88.25°W (Elev. 712 ft)
Last Update:
9:36 pm CDT Oct 8, 2026
Forecast Valid:
10pm CDT Oct 8, 2026-6pm CDT Oct 15, 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