National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Mattoon / Charleston, Coles County Memorial Airport (KMTO)

Lat: 39.48°NLon: 88.28°WElev: 722ft.

Fair

46°F

8°C

Humidity 79%
Wind Speed E 9 mph
Barometer 30.39 in (1029.2 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 11 Apr 7:53 am CDT
Extended Forecast for

Lerna IL

  • Today

    Today: Increasing clouds, with a high near 66. East wind 7 to 10 mph, with gusts as high as 17 mph.

    High: 66 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly cloudy, with a low around 56. South southeast wind 7 to 10 mph, with gusts as high as 21 mph.

    Low: 56 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 78. Breezy, with a south southwest wind 11 to 16 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 36 mph.

    High: 78 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Showers likely, with thunderstorms also possible after 4am. Mostly cloudy, with a low around 63. South southwest wind around 18 mph, with gusts as high as 31 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday

    Monday: A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. South southwest wind 16 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.

    High: 79 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 65. South southwest wind around 15 mph, with gusts as high as 25 mph.

    Low: 65 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 82. South southwest wind 14 to 18 mph, with gusts as high as 31 mph.

    High: 82 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 50%.

    Low: 67 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 80. Chance of precipitation is 60%.

    High: 80 °F

    Showers
    Likely

Detailed Forecast

Today
Increasing clouds, with a high near 66. East wind 7 to 10 mph, with gusts as high as 17 mph.
Tonight
Mostly cloudy, with a low around 56. South southeast wind 7 to 10 mph, with gusts as high as 21 mph.
Sunday
Partly sunny, with a high near 78. Breezy, with a south southwest wind 11 to 16 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 36 mph.
Sunday Night
Showers likely, with thunderstorms also possible after 4am. Mostly cloudy, with a low around 63. South southwest wind around 18 mph, with gusts as high as 31 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. South southwest wind 16 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.
Monday Night
Mostly cloudy, with a low around 65. South southwest wind around 15 mph, with gusts as high as 25 mph.
Tuesday
Partly sunny, with a high near 82. South southwest wind 14 to 18 mph, with gusts as high as 31 mph.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 50%.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 80. Chance of precipitation is 60%.
Wednesday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.
Thursday
Showers likely. Mostly cloudy, with a high near 76.
Thursday Night
A chance of showers. Partly cloudy, with a low around 59.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lerna IL
 39.42°N 88.28°W (Elev. 741 ft)
Last Update:
7:36 am CDT Apr 11, 2026
Forecast Valid:
8am CDT Apr 11, 2026-6pm CDT Apr 17, 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