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

73°F

23°C

Humidity 69%
Wind Speed S 12 G 22 mph
Barometer 29.92 in (1012.7 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 13 Apr 8:53 pm CDT
Extended Forecast for

Lerna IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 65. South southwest wind 15 to 17 mph, with gusts as high as 29 mph.

    Low: 65 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 9am. Partly sunny, with a high near 82. South southwest wind 14 to 18 mph, with gusts as high as 29 mph.

    High: 82 °F

    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66. South southwest wind 13 to 17 mph, with gusts as high as 26 mph.

    Low: 66 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 79. South southwest wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 79 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm, then showers after 10pm. Low around 62. South southwest wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 62 °F

    Showers

  • Thursday

    Thursday: Showers likely, with thunderstorms also possible after 1pm. Partly sunny, with a high near 76. Southwest wind 11 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 58. Southwest wind 6 to 9 mph, with gusts as high as 16 mph.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Showers likely, mainly after 1am. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.

    Low: 62 °F

    Chance
    Showers then
    Showers
    Likely

Detailed Forecast

Tonight
Mostly cloudy, with a low around 65. South southwest wind 15 to 17 mph, with gusts as high as 29 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after 9am. Partly sunny, with a high near 82. South southwest wind 14 to 18 mph, with gusts as high as 29 mph.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66. South southwest wind 13 to 17 mph, with gusts as high as 26 mph.
Wednesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 79. South southwest wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
Showers likely and possibly a thunderstorm, then showers after 10pm. Low around 62. South southwest wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Showers likely, with thunderstorms also possible after 1pm. Partly sunny, with a high near 76. Southwest wind 11 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Mostly clear, with a low around 58. Southwest wind 6 to 9 mph, with gusts as high as 16 mph.
Friday
Mostly sunny, with a high near 82.
Friday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.
Saturday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 73. Breezy. Chance of precipitation is 70%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 41.
Sunday
Mostly sunny, with a high near 56.
Sunday Night
Mostly clear, with a low around 37.
Monday
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:
9:02 pm CDT Apr 13, 2026
Forecast Valid:
9pm CDT Apr 13, 2026-6pm CDT Apr 20, 2026
 
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