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.

Overcast

76°F

24°C

Humidity 62%
Wind Speed SW 10 G 22 mph
Barometer 30.02 in (1015.9 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 13 Apr 11:53 am CDT
Extended Forecast for

Lerna IL

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 80. South southwest wind 15 to 17 mph, with gusts as high as 29 mph.

    High: 80 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 10 percent chance of showers and thunderstorms before 7pm. Mostly cloudy, with a low around 65. South wind 15 to 17 mph, with gusts as high as 29 mph.

    Low: 65 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 82. South southwest wind 14 to 18 mph, with gusts as high as 29 mph.

    High: 82 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 67. South southwest wind 13 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 50%.

    Low: 67 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers likely, then showers and possibly a thunderstorm after 10am. High near 78. South southwest wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 62. South southwest wind around 14 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 62 °F

    Showers
    Likely

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 77. Southwest wind 13 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

    High: 77 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 80. South southwest wind 15 to 17 mph, with gusts as high as 29 mph.
Tonight
A 10 percent chance of showers and thunderstorms before 7pm. Mostly cloudy, with a low around 65. South wind 15 to 17 mph, with gusts as high as 29 mph.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 82. South southwest wind 14 to 18 mph, with gusts as high as 29 mph.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 67. South southwest wind 13 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 50%.
Wednesday
Showers likely, then showers and possibly a thunderstorm after 10am. High near 78. South southwest wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 62. South southwest wind around 14 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 77. Southwest wind 13 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Thursday Night
Mostly clear, with a low around 58.
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 70%.
Saturday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 73.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 42.
Sunday
Mostly sunny, with a high near 59.
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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:
11:26 am CDT Apr 13, 2026
Forecast Valid:
11am CDT Apr 13, 2026-6pm CDT Apr 19, 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