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

33°F

1°C

Humidity 78%
Wind Speed N 6 mph
Barometer 30.06 in (1018.1 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 28 Feb 6:53 am CST
Extended Forecast for

Lerna IL

  • Today

    Today: Isolated showers after 5pm. Increasing clouds, with a high near 57. North northeast wind 7 to 13 mph becoming east southeast in the afternoon. Chance of precipitation is 20%.

    High: 57 °F

    Mostly Sunny
    then Isolated
    Showers

  • Tonight

    Tonight: Isolated showers before 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 27. East wind 7 to 15 mph becoming north after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 20%.

    Low: 27 °F

    Isolated
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 41. North northeast wind 10 to 15 mph, with gusts as high as 23 mph.

    High: 41 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Snow likely, mainly after midnight. Cloudy, with a low around 27. Northeast wind around 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.

    Low: 27 °F

    Snow Likely

  • Monday

    Monday: Mostly cloudy, with a high near 40. East southeast wind 8 to 13 mph, with gusts as high as 21 mph.

    High: 40 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Rain likely, mainly after midnight. Cloudy, with a low around 34. Southeast wind 8 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 34 °F

    Chance Rain
    then Rain
    Likely

  • Tuesday

    Tuesday: Rain. High near 53. South wind 11 to 14 mph becoming west in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 53 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain. Low around 44. Chance of precipitation is 80%.

    Low: 44 °F

    Rain

  • Wednesday

    Wednesday: Rain likely and possibly a thunderstorm. Cloudy, with a high near 59. Chance of precipitation is 70%.

    High: 59 °F

    Rain Likely

Detailed Forecast

Today
Isolated showers after 5pm. Increasing clouds, with a high near 57. North northeast wind 7 to 13 mph becoming east southeast in the afternoon. Chance of precipitation is 20%.
Tonight
Isolated showers before 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 27. East wind 7 to 15 mph becoming north after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 20%.
Sunday
Mostly cloudy, with a high near 41. North northeast wind 10 to 15 mph, with gusts as high as 23 mph.
Sunday Night
Snow likely, mainly after midnight. Cloudy, with a low around 27. Northeast wind around 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.
Monday
Mostly cloudy, with a high near 40. East southeast wind 8 to 13 mph, with gusts as high as 21 mph.
Monday Night
Rain likely, mainly after midnight. Cloudy, with a low around 34. Southeast wind 8 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
Rain. High near 53. South wind 11 to 14 mph becoming west in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Tuesday Night
Rain. Low around 44. Chance of precipitation is 80%.
Wednesday
Rain likely and possibly a thunderstorm. Cloudy, with a high near 59. Chance of precipitation is 70%.
Wednesday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.
Thursday
A chance of rain. Mostly cloudy, with a high near 63.
Thursday Night
A chance of rain. Partly cloudy, with a low around 52.
Friday
Rain likely. Cloudy, with a high near 66.
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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:
5:56 am CST Feb 28, 2026
Forecast Valid:
7am CST Feb 28, 2026-6pm CST Mar 6, 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