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.

Overcast

60°F

16°C

Humidity 86%
Wind Speed S 12 G 24 mph
Barometer 29.84 in (1010.4 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 9 Mar 1:53 pm CDT
Extended Forecast for

Lerna IL

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 72. South southwest wind around 17 mph, with gusts as high as 28 mph.

    High: 72 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 60. South southwest wind 11 to 15 mph, with gusts as high as 26 mph.

    Low: 60 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 10 percent chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 75. South southwest wind 10 to 17 mph, with gusts as high as 28 mph.

    High: 75 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Low around 56. South southwest wind 15 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 56 °F

    T-storms
    Likely then
    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. Temperature rising to near 63 by 10am, then falling to around 47 during the remainder of the day. Breezy, with a southwest wind 18 to 21 mph becoming northwest in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 63 °F⇓

    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: Cloudy, then gradually becoming partly cloudy, with a low around 30. Blustery, with a north northwest wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 30 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Cloudy

  • Thursday

    Thursday: Sunny, with a high near 47. Northwest wind around 8 mph becoming west southwest in the afternoon.

    High: 47 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 40. Breezy.

    Low: 40 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Friday

    Friday: Mostly cloudy, with a high near 56. Breezy.

    High: 56 °F

    Mostly Cloudy
    and Breezy

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 72. South southwest wind around 17 mph, with gusts as high as 28 mph.
Tonight
Mostly cloudy, with a low around 60. South southwest wind 11 to 15 mph, with gusts as high as 26 mph.
Tuesday
A 10 percent chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 75. South southwest wind 10 to 17 mph, with gusts as high as 28 mph.
Tuesday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Low around 56. South southwest wind 15 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
Showers and possibly a thunderstorm. Temperature rising to near 63 by 10am, then falling to around 47 during the remainder of the day. Breezy, with a southwest wind 18 to 21 mph becoming northwest in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Wednesday Night
Cloudy, then gradually becoming partly cloudy, with a low around 30. Blustery, with a north northwest wind 10 to 20 mph, with gusts as high as 30 mph.
Thursday
Sunny, with a high near 47. Northwest wind around 8 mph becoming west southwest in the afternoon.
Thursday Night
Mostly cloudy, with a low around 40. Breezy.
Friday
Mostly cloudy, with a high near 56. Breezy.
Friday Night
Mostly cloudy, with a low around 36.
Saturday
Partly sunny, with a high near 60.
Saturday Night
Mostly cloudy, with a low around 48.
Sunday
Rain likely. Mostly cloudy, with a high near 60. Breezy.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lerna IL
 39.42°N 88.28°W (Elev. 741 ft)
Last Update:
2:05 pm CDT Mar 9, 2026
Forecast Valid:
2pm CDT Mar 9, 2026-6pm CDT Mar 15, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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