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.

Mostly Cloudy

63°F

17°C

Humidity 81%
Wind Speed SW 14 G 35 mph
Barometer 29.84 in (1010.1 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 7 Mar 12:53 pm CST
Extended Forecast for

Lerna IL

  • This Afternoon

    This Afternoon: A 20 percent chance of showers before 4pm. Cloudy, with a high near 63. Breezy, with a west northwest wind 17 to 22 mph, with gusts as high as 36 mph.

    High: 63 °F

    Slight Chance
    Showers and
    Breezy

  • Tonight

    Tonight: Mostly cloudy, with a low around 36. West northwest wind 6 to 15 mph, with gusts as high as 23 mph.

    Low: 36 °F

    Mostly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 61. Southwest wind 6 to 14 mph, with gusts as high as 21 mph.

    High: 61 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 43. South southwest wind 9 to 11 mph, with gusts as high as 20 mph.

    Low: 43 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 71. South southwest wind 10 to 17 mph, with gusts as high as 28 mph.

    High: 71 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 58. South southwest wind 10 to 14 mph, with gusts as high as 24 mph.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 76. Breezy, with a south southwest wind 10 to 20 mph, with gusts as high as 31 mph.

    High: 76 °F

    Mostly Cloudy
    then Chance
    T-storms and
    Breezy

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 57. Breezy. Chance of precipitation is 90%.

    Low: 57 °F

    Showers and
    Breezy

  • Wednesday

    Wednesday: Showers. High near 65. Breezy. Chance of precipitation is 100%.

    High: 65 °F

    Showers and
    Breezy

Detailed Forecast

This Afternoon
A 20 percent chance of showers before 4pm. Cloudy, with a high near 63. Breezy, with a west northwest wind 17 to 22 mph, with gusts as high as 36 mph.
Tonight
Mostly cloudy, with a low around 36. West northwest wind 6 to 15 mph, with gusts as high as 23 mph.
Sunday
Sunny, with a high near 61. Southwest wind 6 to 14 mph, with gusts as high as 21 mph.
Sunday Night
Clear, with a low around 43. South southwest wind 9 to 11 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 71. South southwest wind 10 to 17 mph, with gusts as high as 28 mph.
Monday Night
Mostly clear, with a low around 58. South southwest wind 10 to 14 mph, with gusts as high as 24 mph.
Tuesday
A 40 percent chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 76. Breezy, with a south southwest wind 10 to 20 mph, with gusts as high as 31 mph.
Tuesday Night
Showers and possibly a thunderstorm. Low around 57. Breezy. Chance of precipitation is 90%.
Wednesday
Showers. High near 65. Breezy. Chance of precipitation is 100%.
Wednesday Night
A 30 percent chance of rain before midnight. Partly cloudy, with a low around 30. Blustery.
Thursday
Sunny, with a high near 47.
Thursday Night
Mostly cloudy, with a low around 39.
Friday
Mostly cloudy, with a high near 60. Breezy.
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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:
1:11 pm CST Mar 7, 2026
Forecast Valid:
1pm CST Mar 7, 2026-6pm CDT Mar 13, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation