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.

Mostly Cloudy

80°F

27°C

Humidity 74%
Wind Speed SW 8 mph
Barometer 29.95 in (1013.4 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 19 Aug 12:53 pm CDT
Extended Forecast for

2 Miles NW Lerna IL

  • This Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 80. West southwest wind around 5 mph.

    High: 80 °F

    Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 1am. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 66. Light and variable wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Showers
    Likely then
    Chance
    T-storms and
    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 81. North northeast wind around 6 mph.

    High: 81 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 62. North northeast wind around 5 mph becoming calm in the evening.

    Low: 62 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 84. Calm wind becoming west around 5 mph in the afternoon.

    High: 84 °F

    Sunny

  • Friday Night

    Friday Night: A chance of showers before 10pm, then a chance of showers and thunderstorms between 10pm and 1am. Mostly clear, with a low around 63. Light west southwest wind. Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 82. Northwest wind 5 to 10 mph, with gusts as high as 16 mph.

    High: 82 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 80. West southwest wind around 5 mph.
Tonight
Showers and thunderstorms likely, mainly before 1am. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 66. Light and variable wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 81. North northeast wind around 6 mph.
Thursday Night
Partly cloudy, with a low around 62. North northeast wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 84. Calm wind becoming west around 5 mph in the afternoon.
Friday Night
A chance of showers before 10pm, then a chance of showers and thunderstorms between 10pm and 1am. Mostly clear, with a low around 63. Light west southwest wind. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 82. Northwest wind 5 to 10 mph, with gusts as high as 16 mph.
Saturday Night
Mostly clear, with a low around 61.
Sunday
Sunny, with a high near 81.
Sunday Night
Partly cloudy, with a low around 59.
Monday
Mostly sunny, with a high near 81.
Monday Night
Partly cloudy, with a low around 62.
Tuesday
Mostly sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NW Lerna IL
 39.44°N 88.31°W (Elev. 709 ft)
Last Update:
1:26 pm CDT Aug 19, 2026
Forecast Valid:
1pm CDT Aug 19, 2026-6pm CDT Aug 25, 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