National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Mattoon / Charleston, Coles County Memorial Airport (KMTO)

Lat: 39.48°NLon: 88.28°WElev: 722ft.

Fair

37°F

3°C

Humidity 70%
Wind Speed S 13 G 22 mph
Barometer 29.98 in (1015.5 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 13 Jan 2:53 am CST
Extended Forecast for

Lerna IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 34. South southwest wind 10 to 13 mph, with gusts as high as 18 mph.

    Low: 34 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 54. West southwest wind 11 to 17 mph, with gusts as high as 32 mph.

    High: 54 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A slight chance of showers between 9pm and 3am. Cloudy, with a low around 34. West southwest wind 10 to 13 mph becoming northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 20%.

    Low: 34 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A chance of flurries. Mostly cloudy, with a temperature falling to around 27 by 4pm. Breezy, with a north northwest wind 11 to 16 mph increasing to 19 to 24 mph in the morning. Winds could gust as high as 34 mph.

    High: 35 °F⇓

    Chance
    Flurries and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 15. North northwest wind 10 to 18 mph, with gusts as high as 29 mph.

    Low: 15 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 26. North northwest wind 6 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 17 mph.

    High: 26 °F

    Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of snow showers after midnight. Mostly cloudy, with a low around 21. South wind 6 to 16 mph, with gusts as high as 25 mph.

    Low: 21 °F

    Mostly Cloudy
    then Chance
    Snow Showers

  • Friday

    Friday: A 30 percent chance of snow showers after noon. Mostly cloudy, with a high near 38. Breezy.

    High: 38 °F

    Mostly Cloudy
    then Chance
    Snow Showers
    and Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 17.

    Low: 17 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 34. South southwest wind 10 to 13 mph, with gusts as high as 18 mph.
Tuesday
Mostly cloudy, with a high near 54. West southwest wind 11 to 17 mph, with gusts as high as 32 mph.
Tuesday Night
A slight chance of showers between 9pm and 3am. Cloudy, with a low around 34. West southwest wind 10 to 13 mph becoming northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Wednesday
A chance of flurries. Mostly cloudy, with a temperature falling to around 27 by 4pm. Breezy, with a north northwest wind 11 to 16 mph increasing to 19 to 24 mph in the morning. Winds could gust as high as 34 mph.
Wednesday Night
Mostly clear, with a low around 15. North northwest wind 10 to 18 mph, with gusts as high as 29 mph.
Thursday
Sunny, with a high near 26. North northwest wind 6 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 17 mph.
Thursday Night
A 30 percent chance of snow showers after midnight. Mostly cloudy, with a low around 21. South wind 6 to 16 mph, with gusts as high as 25 mph.
Friday
A 30 percent chance of snow showers after noon. Mostly cloudy, with a high near 38. Breezy.
Friday Night
Mostly cloudy, with a low around 17.
Saturday
Mostly cloudy, with a high near 25.
Saturday Night
Mostly cloudy, with a low around 6.
Sunday
Partly sunny, with a high near 18.
Sunday Night
Partly cloudy, with a low around 8.
M.L.King Day
Mostly sunny, with a high near 25.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lerna IL
 39.42°N 88.25°W (Elev. 712 ft)
Last Update:
2:52 am CST Jan 13, 2026
Forecast Valid:
3am CST Jan 13, 2026-6pm CST Jan 19, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation