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

14°F

-10°C

Humidity 77%
Wind Speed W 15 mph
Barometer 30.17 in (1022.7 mb)
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Wind Chill-1°F (-18°C)
Last update 17 Mar 7:53 am CDT
Extended Forecast for

Lerna IL

  • Today

    Today: Partly sunny, with a high near 29. Wind chill values between -1 and 9. West northwest wind 7 to 15 mph, with gusts as high as 24 mph.

    High: 29 °F

    Partly Sunny

  • Tonight

    Tonight: Snow likely, mainly after 2am. Mostly cloudy, with a low around 25. South southeast wind 5 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 25 °F

    Chance Snow
    then Snow
    Likely

  • Wednesday

    Wednesday: A 30 percent chance of snow before 7am. Cloudy through mid morning, then gradual clearing, with a high near 54. South wind 11 to 16 mph, with gusts as high as 29 mph.

    High: 54 °F

    Chance Snow
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 36. South wind around 6 mph.

    Low: 36 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 62. South wind 6 to 8 mph.

    High: 62 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 43. Southeast wind around 6 mph.

    Low: 43 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 69. South wind 6 to 9 mph becoming west southwest in the afternoon. Winds could gust as high as 15 mph.

    High: 69 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 29. Wind chill values between -1 and 9. West northwest wind 7 to 15 mph, with gusts as high as 24 mph.
Tonight
Snow likely, mainly after 2am. Mostly cloudy, with a low around 25. South southeast wind 5 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Wednesday
A 30 percent chance of snow before 7am. Cloudy through mid morning, then gradual clearing, with a high near 54. South wind 11 to 16 mph, with gusts as high as 29 mph.
Wednesday Night
Mostly cloudy, with a low around 36. South wind around 6 mph.
Thursday
Partly sunny, with a high near 62. South wind 6 to 8 mph.
Thursday Night
Partly cloudy, with a low around 43. Southeast wind around 6 mph.
Friday
Mostly sunny, with a high near 69. South wind 6 to 9 mph becoming west southwest in the afternoon. Winds could gust as high as 15 mph.
Friday Night
Partly cloudy, with a low around 47.
Saturday
Mostly sunny, with a high near 70.
Saturday Night
Mostly clear, with a low around 50.
Sunday
Mostly sunny, with a high near 69.
Sunday Night
Partly cloudy, with a low around 37.
Monday
Mostly sunny, with a high near 52.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lerna IL
 39.42°N 88.28°W (Elev. 741 ft)
Last Update:
7:36 am CDT Mar 17, 2026
Forecast Valid:
7am CDT Mar 17, 2026-6pm CDT Mar 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation