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

65°F

18°C

Humidity 49%
Wind Speed S 15 G 21 mph
Barometer 30.02 in (1016.3 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 17 Oct 9:53 am CDT
Extended Forecast for

Lerna IL

  • Today

    Today: Partly sunny, with a high near 77. South wind 11 to 13 mph, with gusts as high as 17 mph.

    High: 77 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 59. South southeast wind 8 to 10 mph, with gusts as high as 16 mph.

    Low: 59 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 81. Southwest wind 10 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 81 °F

    Chance
    Showers then
    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 48. South southwest wind 9 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

    Low: 48 °F

    Showers

  • Sunday

    Sunday: A 30 percent chance of showers before 1pm. Mostly sunny, with a high near 60. Breezy, with a west northwest wind 17 to 22 mph, with gusts as high as 32 mph.

    High: 60 °F

    Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Clear, with a low around 39. West wind 5 to 9 mph, with gusts as high as 16 mph.

    Low: 39 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 68. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 68 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

Detailed Forecast

Today
Partly sunny, with a high near 77. South wind 11 to 13 mph, with gusts as high as 17 mph.
Tonight
Partly cloudy, with a low around 59. South southeast wind 8 to 10 mph, with gusts as high as 16 mph.
Saturday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 81. Southwest wind 10 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers and possibly a thunderstorm. Low around 48. South southwest wind 9 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Sunday
A 30 percent chance of showers before 1pm. Mostly sunny, with a high near 60. Breezy, with a west northwest wind 17 to 22 mph, with gusts as high as 32 mph.
Sunday Night
Clear, with a low around 39. West wind 5 to 9 mph, with gusts as high as 16 mph.
Monday
Sunny, with a high near 68. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 25 mph.
Monday Night
Mostly clear, with a low around 47.
Tuesday
Sunny, with a high near 62.
Tuesday Night
Mostly clear, with a low around 39.
Wednesday
Sunny, with a high near 63.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 44.
Thursday
Mostly sunny, with a high near 63.
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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:
10:36 am CDT Oct 17, 2025
Forecast Valid:
10am CDT Oct 17, 2025-6pm CDT Oct 23, 2025
 
Forecast Discussion
 
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Additional Resources

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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