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

71°F

22°C

Humidity 53%
Wind Speed SW 13 G 22 mph
Barometer 29.93 in (1012.9 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 12 Apr 11:53 pm CDT
Extended Forecast for

Lerna IL

  • Overnight

    Overnight: A 50 percent chance of showers and thunderstorms, mainly before 5am. Cloudy, with a low around 63. Breezy, with a southwest wind 15 to 21 mph, with gusts as high as 37 mph.

    Low: 63 °F

    Chance
    T-storms and
    Breezy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly before 4pm. Partly sunny, with a high near 81. Southwest wind 14 to 18 mph, with gusts as high as 28 mph.

    High: 81 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 65. South wind 15 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.

    Low: 65 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82. Breezy, with a south southwest wind 14 to 20 mph, with gusts as high as 30 mph.

    High: 82 °F

    Partly Sunny
    then Chance
    T-storms and
    Breezy

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. South southwest wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.

    Low: 67 °F

    Chance
    T-storms then
    Chance
    Showers

  • 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 13 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Showers
    Likely

  • 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 tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Showers
    Likely

  • Thursday

    Thursday: A 30 percent chance of showers before 1pm. Partly sunny, with a high near 79.

    High: 79 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

Detailed Forecast

Overnight
A 50 percent chance of showers and thunderstorms, mainly before 5am. Cloudy, with a low around 63. Breezy, with a southwest wind 15 to 21 mph, with gusts as high as 37 mph.
Monday
A 30 percent chance of showers and thunderstorms, mainly before 4pm. Partly sunny, with a high near 81. Southwest wind 14 to 18 mph, with gusts as high as 28 mph.
Monday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 65. South wind 15 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
Tuesday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82. Breezy, with a south southwest wind 14 to 20 mph, with gusts as high as 30 mph.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. South southwest wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.
Wednesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 79. South southwest wind 13 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. 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 tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 79.
Thursday Night
Mostly clear, with a low around 59.
Friday
Mostly sunny, with a high near 83.
Friday Night
Showers likely. Mostly cloudy, with a low around 63.
Saturday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 77.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 44.
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:
11:46 pm CDT Apr 12, 2026
Forecast Valid:
12am 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