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

62°F

17°C

Humidity 67%
Wind Speed SE 7 mph
Barometer 30.18 in (1021.9 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 11 Apr 10:53 pm CDT
Extended Forecast for

Lerna IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 56. South southeast wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 56 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 79. 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: 79 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm, mainly before 4am, then a chance of showers and thunderstorms after 4am. Low around 63. South southwest wind around 18 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Chance
    Showers then
    Showers

  • Monday

    Monday: A chance of showers between 7am and 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 80. South southwest wind 15 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.

    High: 80 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 65. South southwest wind 14 to 16 mph, with gusts as high as 26 mph.

    Low: 65 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82. Breezy, with a south southwest wind 14 to 20 mph, with gusts as high as 30 mph.

    High: 82 °F

    Mostly Sunny
    then Chance
    T-storms and
    Breezy

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South southwest wind 14 to 16 mph, with gusts as high as 26 mph.

    Low: 65 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 78. Chance of precipitation is 70%.

    High: 78 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. Chance of precipitation is 70%.

    Low: 61 °F

    Showers
    Likely

Detailed Forecast

Tonight
Mostly cloudy, with a low around 56. South southeast wind 8 to 10 mph, with gusts as high as 20 mph.
Sunday
Partly sunny, with a high near 79. 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 and possibly a thunderstorm, mainly before 4am, then a chance of showers and thunderstorms after 4am. Low around 63. South southwest wind around 18 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
A chance of showers between 7am and 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 80. South southwest wind 15 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.
Monday Night
Partly cloudy, with a low around 65. South southwest wind 14 to 16 mph, with gusts as high as 26 mph.
Tuesday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82. Breezy, with a south southwest wind 14 to 20 mph, with gusts as high as 30 mph.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South southwest wind 14 to 16 mph, with gusts as high as 26 mph.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 78. Chance of precipitation is 70%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. Chance of precipitation is 70%.
Thursday
A 50 percent chance of showers. Mostly cloudy, with a high near 76.
Thursday Night
Mostly clear, with a low around 58.
Friday
A chance of showers. Mostly sunny, with a high near 81.
Friday Night
Showers likely. Mostly cloudy, with a low around 56.
Saturday
A chance of showers. Mostly cloudy, with a high near 68.
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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:
11:36 pm CDT Apr 11, 2026
Forecast Valid:
11pm CDT Apr 11, 2026-6pm CDT Apr 18, 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