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

42°F

6°C

Humidity 65%
Wind Speed SW 5 mph
Barometer 30.17 in (1021.8 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 19 Apr 12:53 am CDT
Extended Forecast for

Lerna IL

Frost Advisory April 20, 01:00am until April 20, 08:00am
Frost Advisory April 19, 01:49am until April 19, 08:00am
Click here for hazard details and duration
Frost Advisory
Frost Advisory
  •  
    Frost Advisory April 19, 01:49am until April 19, 08:00am

    NOW until 8:00am Sun

    Frost Advisory

  • Overnight

    Low: 35 °F

    Areas Frost

  • Sunday

    Sunday: Areas of frost before 8am. Otherwise, increasing clouds, with a high near 60. West wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 60 °F

    Areas Frost
    then
    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Areas of frost after 3am. Otherwise, mostly clear, with a low around 34. North wind 5 to 11 mph, with gusts as high as 20 mph.

    Low: 34 °F

    Partly Cloudy
    then Areas
    Frost

  • Monday

    Monday: Areas of frost before 8am. Otherwise, sunny, with a high near 59. North northeast wind around 5 mph becoming light and variable.

    High: 59 °F

    Areas Frost
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 45. South wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 45 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 74. Southwest wind 11 to 18 mph, with gusts as high as 29 mph.

    High: 74 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 56. Southwest wind around 11 mph, with gusts as high as 21 mph.

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

Detailed Forecast

Overnight
Areas of frost after 4am. Otherwise, clear, with a low around 35. West southwest wind around 6 mph.
Sunday
Areas of frost before 8am. Otherwise, increasing clouds, with a high near 60. West wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 30 mph.
Sunday Night
Areas of frost after 3am. Otherwise, mostly clear, with a low around 34. North wind 5 to 11 mph, with gusts as high as 20 mph.
Monday
Areas of frost before 8am. Otherwise, sunny, with a high near 59. North northeast wind around 5 mph becoming light and variable.
Monday Night
Mostly clear, with a low around 45. South wind 6 to 10 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 74. Southwest wind 11 to 18 mph, with gusts as high as 29 mph.
Tuesday Night
Mostly clear, with a low around 56. Southwest wind around 11 mph, with gusts as high as 21 mph.
Wednesday
Sunny, with a high near 75.
Wednesday Night
Mostly clear, with a low around 57.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 62.
Friday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 75.
Friday Night
Showers likely. Mostly cloudy, with a low around 50.
Saturday
A chance of showers. Mostly sunny, with a high near 67.
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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:
1:45 am CDT Apr 19, 2026
Forecast Valid:
1am CDT Apr 19, 2026-6pm CDT Apr 25, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation