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

58°F

14°C

Humidity 70%
Wind Speed NE 3 mph
Barometer 30.28 in (1025.1 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 1 Nov 4:53 am CST
Extended Forecast for

Lerna IL

  • Overnight

    Overnight: A 30 percent chance of rain. Cloudy, with a low around 56. East southeast wind around 5 mph.

    Low: 56 °F

    Chance Rain

  • Sunday

    Sunday: A 30 percent chance of rain, mainly between 3pm and 5pm. Cloudy, with a high near 65. South southeast wind 6 to 11 mph, with gusts as high as 22 mph.

    High: 65 °F

    Chance Rain

  • Sunday Night

    Sunday Night: A 30 percent chance of rain, mainly after 2am. Patchy fog after midnight. Otherwise, cloudy, with a low around 53. South southeast wind around 10 mph, with gusts as high as 22 mph.

    Low: 53 °F

    Chance Rain
    and Patchy
    Fog

  • Monday

    Monday: A 30 percent chance of rain between 10am and noon. Patchy fog before 9am. Otherwise, cloudy, with a high near 67. South southeast wind 9 to 14 mph, with gusts as high as 24 mph.

    High: 67 °F

    Chance Rain
    and Patchy
    Fog then
    Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 58. South southeast wind 13 to 16 mph, with gusts as high as 29 mph.

    Low: 58 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Rain likely, mainly after noon. Mostly cloudy, with a high near 74. Breezy, with a south wind 17 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 74 °F

    Breezy.
    Chance Rain
    then Rain
    Likely

  • Tuesday Night

    Tuesday Night: Rain. Low around 57. South wind 11 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 57 °F

    Rain

  • Wednesday

    Wednesday: Rain likely, mainly before noon. Partly sunny, with a high near 68. Chance of precipitation is 70%.

    High: 68 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain before midnight. Mostly cloudy, with a low around 49.

    Low: 49 °F

    Chance Rain
    then Partly
    Cloudy

Detailed Forecast

Overnight
A 30 percent chance of rain. Cloudy, with a low around 56. East southeast wind around 5 mph.
Sunday
A 30 percent chance of rain, mainly between 3pm and 5pm. Cloudy, with a high near 65. South southeast wind 6 to 11 mph, with gusts as high as 22 mph.
Sunday Night
A 30 percent chance of rain, mainly after 2am. Patchy fog after midnight. Otherwise, cloudy, with a low around 53. South southeast wind around 10 mph, with gusts as high as 22 mph.
Monday
A 30 percent chance of rain between 10am and noon. Patchy fog before 9am. Otherwise, cloudy, with a high near 67. South southeast wind 9 to 14 mph, with gusts as high as 24 mph.
Monday Night
Mostly cloudy, with a low around 58. South southeast wind 13 to 16 mph, with gusts as high as 29 mph.
Tuesday
Rain likely, mainly after noon. Mostly cloudy, with a high near 74. Breezy, with a south wind 17 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
Rain. Low around 57. South wind 11 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
Rain likely, mainly before noon. Partly sunny, with a high near 68. Chance of precipitation is 70%.
Wednesday Night
A 30 percent chance of rain before midnight. Mostly cloudy, with a low around 49.
Thursday
Partly sunny, with a high near 66.
Thursday Night
Mostly cloudy, with a low around 48.
Friday
Mostly cloudy, with a high near 63.
Friday Night
Mostly cloudy, with a low around 44.
Saturday
Partly sunny, with a high near 63.
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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:
4:36 am CST Nov 1, 2026
Forecast Valid:
5am CST Nov 1, 2026-6pm CST Nov 7, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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