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

25°F

-4°C

Humidity 88%
Wind Speed N 10 mph
Barometer 30.22 in (1023.8 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill15°F (-9°C)
Last update 1 Mar 2:53 am CST
Extended Forecast for

Lerna IL

  • Overnight

    Overnight: Mostly clear, with a low around 25. North northeast wind around 15 mph, with gusts as high as 23 mph.

    Low: 25 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly cloudy, with a high near 43. Northeast wind 10 to 14 mph, with gusts as high as 22 mph.

    High: 43 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Snow, possibly mixed with sleet before 4am, then a chance of snow and freezing rain between 4am and 5am, then a chance of snow after 5am. Low around 29. East northeast wind 9 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 100%. Little or no ice accumulation expected. New snow and sleet accumulation of 1 to 2 inches possible.

    Low: 29 °F

    Snow Likely
    then Wintry
    Mix

  • Monday

    Monday: Cloudy, with a high near 42. East wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 42 °F

    Cloudy

  • Monday Night

    Monday Night: Rain after midnight. Low around 38. East southeast wind 6 to 9 mph, with gusts as high as 16 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 38 °F

    Cloudy then
    Rain

  • Tuesday

    Tuesday: Showers. High near 57. South wind 8 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 57 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers. Low around 51. South wind 7 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 51 °F

    Showers

  • Wednesday

    Wednesday: Showers, with thunderstorms also possible after noon. High near 63. Chance of precipitation is 80%.

    High: 63 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 50. Chance of precipitation is 70%.

    Low: 50 °F

    Showers
    Likely

Detailed Forecast

Overnight
Mostly clear, with a low around 25. North northeast wind around 15 mph, with gusts as high as 23 mph.
Sunday
Mostly cloudy, with a high near 43. Northeast wind 10 to 14 mph, with gusts as high as 22 mph.
Sunday Night
Snow, possibly mixed with sleet before 4am, then a chance of snow and freezing rain between 4am and 5am, then a chance of snow after 5am. Low around 29. East northeast wind 9 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 100%. Little or no ice accumulation expected. New snow and sleet accumulation of 1 to 2 inches possible.
Monday
Cloudy, with a high near 42. East wind 8 to 11 mph, with gusts as high as 20 mph.
Monday Night
Rain after midnight. Low around 38. East southeast wind 6 to 9 mph, with gusts as high as 16 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
Showers. High near 57. South wind 8 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday Night
Showers. Low around 51. South wind 7 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
Showers, with thunderstorms also possible after noon. High near 63. Chance of precipitation is 80%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 50. Chance of precipitation is 70%.
Thursday
Showers likely. Mostly cloudy, with a high near 64. Chance of precipitation is 60%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 54.
Friday
Showers likely. Mostly cloudy, with a high near 68.
Friday Night
Showers likely. Partly cloudy, with a low around 52.
Saturday
Showers likely. Cloudy, with a high near 60.
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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:
2:57 am CST Mar 1, 2026
Forecast Valid:
3am CST Mar 1, 2026-6pm CST Mar 7, 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