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.

Fair

41°F

5°C

Humidity 51%
Wind Speed NE 18 mph
Barometer 30.37 in (1029.0 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 1 Mar 1:53 pm CST
Extended Forecast for

Lerna IL

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 42. Northeast wind 10 to 13 mph, with gusts as high as 20 mph.

    High: 42 °F

    Mostly Cloudy

  • Tonight

    Tonight: Snow, mainly before 5am. Low around 30. East northeast wind around 10 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    Low: 30 °F

    Chance Snow
    then Snow

  • Monday

    Monday: A 20 percent chance of snow before 9am. Mostly cloudy, with a high near 42. East wind 7 to 11 mph, with gusts as high as 20 mph.

    High: 42 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Monday Night

    Monday Night: A 50 percent chance of showers after midnight. Cloudy, with a low around 37. East southeast wind around 6 mph.

    Low: 37 °F

    Cloudy then
    Chance
    Showers

  • Tuesday

    Tuesday: Showers. High near 56. South wind 7 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 56 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers. Low around 52. South wind 6 to 9 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: 52 °F

    Showers

  • Wednesday

    Wednesday: Showers, with thunderstorms also possible after noon. High near 64. South southwest wind 9 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 64 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before midnight, then showers likely. Low around 53. Chance of precipitation is 80%.

    Low: 53 °F

    Showers

  • Thursday

    Thursday: Showers likely. Mostly cloudy, with a high near 66. Chance of precipitation is 70%.

    High: 66 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 42. Northeast wind 10 to 13 mph, with gusts as high as 20 mph.
Tonight
Snow, mainly before 5am. Low around 30. East northeast wind around 10 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Monday
A 20 percent chance of snow before 9am. Mostly cloudy, with a high near 42. East wind 7 to 11 mph, with gusts as high as 20 mph.
Monday Night
A 50 percent chance of showers after midnight. Cloudy, with a low around 37. East southeast wind around 6 mph.
Tuesday
Showers. High near 56. South wind 7 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday Night
Showers. Low around 52. South wind 6 to 9 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 64. South southwest wind 9 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday Night
Showers and possibly a thunderstorm before midnight, then showers likely. Low around 53. Chance of precipitation is 80%.
Thursday
Showers likely. Mostly cloudy, with a high near 66. Chance of precipitation is 70%.
Thursday Night
Showers likely, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.
Friday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 72. Breezy.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 49.
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:
1:36 pm CST Mar 1, 2026
Forecast Valid:
1pm CST Mar 1, 2026-6pm CST Mar 7, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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