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.

A Few Clouds

64°F

18°C

Humidity 90%
Wind Speed NW 14 mph
Barometer 30.12 in (1019.5 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 19 May 10:53 pm CDT
Extended Forecast for

Lerna IL

  • Tonight

    Tonight: Cloudy, with a low around 56. North wind 7 to 11 mph, with gusts as high as 21 mph.

    Low: 56 °F

    Cloudy

  • Wednesday

    Wednesday: A slight chance of showers between 8am and noon. Cloudy, with a high near 63. North northeast wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    High: 63 °F

    Slight Chance
    Showers then
    Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 47. North northeast wind 9 to 11 mph, with gusts as high as 18 mph.

    Low: 47 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 67. East northeast wind 11 to 13 mph, with gusts as high as 21 mph.

    High: 67 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 52. East northeast wind around 10 mph, with gusts as high as 18 mph.

    Low: 52 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers, with thunderstorms also possible after 1pm. High near 68. East northeast wind around 11 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 68 °F

    Showers

  • Friday Night

    Friday Night: Showers likely before 1am. Mostly cloudy, with a low around 57. East southeast wind 6 to 8 mph becoming west southwest after midnight. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 57 °F

    Showers
    Likely

  • Saturday

    Saturday: Partly sunny, with a high near 75.

    High: 75 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 58.

    Low: 58 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Cloudy, with a low around 56. North wind 7 to 11 mph, with gusts as high as 21 mph.
Wednesday
A slight chance of showers between 8am and noon. Cloudy, with a high near 63. North northeast wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, with a low around 47. North northeast wind 9 to 11 mph, with gusts as high as 18 mph.
Thursday
Mostly sunny, with a high near 67. East northeast wind 11 to 13 mph, with gusts as high as 21 mph.
Thursday Night
A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 52. East northeast wind around 10 mph, with gusts as high as 18 mph.
Friday
Showers, with thunderstorms also possible after 1pm. High near 68. East northeast wind around 11 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Friday Night
Showers likely before 1am. Mostly cloudy, with a low around 57. East southeast wind 6 to 8 mph becoming west southwest after midnight. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Partly sunny, with a high near 75.
Saturday Night
A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 58.
Sunday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 77. Chance of precipitation is 30%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 59.
Memorial Day
A chance of showers. Mostly cloudy, with a high near 78.
Monday Night
A chance of showers. Mostly cloudy, with a low around 62.
Tuesday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 81.
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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:
9:31 pm CDT May 19, 2026
Forecast Valid:
11pm CDT May 19, 2026-6pm CDT May 26, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation