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

46°F

8°C

Humidity 46%
Wind Speed E 6 mph
Barometer 30.33 in (1027.6 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 7 Apr 6:53 pm CDT
Extended Forecast for

Lerna IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 37. East wind 7 to 10 mph, with gusts as high as 20 mph.

    Low: 37 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 67. South wind 10 to 17 mph, with gusts as high as 28 mph.

    High: 67 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 52. South wind around 14 mph, with gusts as high as 25 mph.

    Low: 52 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 73. Southwest wind 14 to 16 mph, with gusts as high as 26 mph.

    High: 73 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 54. South wind 9 to 11 mph, with gusts as high as 21 mph.

    Low: 54 °F

    Partly Cloudy

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 67. South southwest wind 9 to 13 mph becoming west northwest in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 50%.

    High: 67 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 46. North northeast wind 6 to 8 mph, with gusts as high as 15 mph.

    Low: 46 °F

    Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 68.

    High: 68 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 37. East wind 7 to 10 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 67. South wind 10 to 17 mph, with gusts as high as 28 mph.
Wednesday Night
Partly cloudy, with a low around 52. South wind around 14 mph, with gusts as high as 25 mph.
Thursday
Mostly sunny, with a high near 73. Southwest wind 14 to 16 mph, with gusts as high as 26 mph.
Thursday Night
Partly cloudy, with a low around 54. South wind 9 to 11 mph, with gusts as high as 21 mph.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 67. South southwest wind 9 to 13 mph becoming west northwest in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 50%.
Friday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 46. North northeast wind 6 to 8 mph, with gusts as high as 15 mph.
Saturday
Partly sunny, with a high near 68.
Saturday Night
Mostly cloudy, with a low around 55.
Sunday
Partly sunny, with a high near 78.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 64.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 78. Breezy.
Monday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 63.
Tuesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 77.
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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:
6:36 pm CDT Apr 7, 2026
Forecast Valid:
7pm CDT Apr 7, 2026-6pm CDT Apr 14, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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