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

66°F

19°C

Humidity 73%
Wind Speed S 14 G 25 mph
Barometer 29.91 in (1012.5 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 31 Mar 8:53 am CDT
Extended Forecast for

Lerna IL

  • Today

    Today: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly cloudy, with a high near 78. Breezy, with a southwest wind 17 to 23 mph, with gusts as high as 34 mph.

    High: 78 °F

    Chance
    T-storms and
    Breezy

  • Tonight

    Tonight: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Low around 55. South southwest wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 55 °F

    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm before 1pm, then rain and possibly a thunderstorm after 1pm. High near 67. Southeast wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 67 °F

    Showers

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 59. Southeast wind 10 to 14 mph, with gusts as high as 25 mph.

    Low: 59 °F

    Chance Rain

  • Thursday

    Thursday: A chance of rain, then rain likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 75. Breezy, with a south wind 16 to 26 mph, with gusts as high as 41 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 75 °F

    Breezy.
    Chance Rain
    then Rain
    Likely

  • Thursday Night

    Thursday Night: Rain and possibly a thunderstorm before 4am, then rain likely. Low around 59. Breezy, with a south southwest wind 13 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 59 °F

    Rain and
    Breezy

  • Friday

    Friday: A 50 percent chance of rain. Mostly cloudy, with a high near 74. South southwest wind 10 to 14 mph, with gusts as high as 21 mph.

    High: 74 °F

    Chance Rain

  • Friday Night

    Friday Night: A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.

    Low: 59 °F

    Chance
    T-storms then
    Rain Likely

  • Saturday

    Saturday: Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 70. Breezy. Chance of precipitation is 70%.

    High: 70 °F

    Rain Likely
    and Breezy

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly cloudy, with a high near 78. Breezy, with a southwest wind 17 to 23 mph, with gusts as high as 34 mph.
Tonight
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Low around 55. South southwest wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
Showers and possibly a thunderstorm before 1pm, then rain and possibly a thunderstorm after 1pm. High near 67. Southeast wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 59. Southeast wind 10 to 14 mph, with gusts as high as 25 mph.
Thursday
A chance of rain, then rain likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 75. Breezy, with a south wind 16 to 26 mph, with gusts as high as 41 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
Rain and possibly a thunderstorm before 4am, then rain likely. Low around 59. Breezy, with a south southwest wind 13 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Friday
A 50 percent chance of rain. Mostly cloudy, with a high near 74. South southwest wind 10 to 14 mph, with gusts as high as 21 mph.
Friday Night
A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.
Saturday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 70. Breezy. Chance of precipitation is 70%.
Saturday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 40.
Sunday
Partly sunny, with a high near 52.
Sunday Night
Partly cloudy, with a low around 33.
Monday
Sunny, with a high near 56.
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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:
9:22 am CDT Mar 31, 2026
Forecast Valid:
9am CDT Mar 31, 2026-6pm CDT Apr 6, 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