Hazardous Weather Conditions
Current conditions at
Mattoon / Charleston, Coles County Memorial Airport (KMTO)
Lat: 39.48°NLon: 88.28°WElev: 722ft.
Overcast
74°F
23°C
| Humidity | 97% |
| Wind Speed | SW 7 mph |
| Barometer | 29.98 in (1014.7 mb) |
| Dewpoint | 73°F (23°C) |
| Visibility | 7.00 mi |
| Last update | 9 Jun 4:53 am CDT |
Extended Forecast for
Lerna IL
Overnight

Low: 74 °F
Chance
ShowersTuesday
High: 86 °F
Chance
Showers then
Slight Chance
T-stormsTuesday Night

Low: 73 °F
Chance
T-stormsWednesday

High: 90 °F
Sunny
Wednesday Night

Low: 74 °F
Mostly Clear
Thursday

High: 90 °F
Sunny
Thursday Night

Low: 68 °F
Showers
LikelyFriday

High: 83 °F
Sunny
Friday Night

Low: 62 °F
Mostly Clear
Detailed Forecast
Overnight
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a steady temperature around 74. South southwest wind around 8 mph, with gusts as high as 16 mph.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly before 9am. Partly sunny, with a high near 86. Southwest wind 8 to 10 mph, with gusts as high as 16 mph.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly before 2am. Partly cloudy, with a low around 73. South southwest wind 6 to 8 mph.
Wednesday
Sunny, with a high near 90. South southwest wind 8 to 15 mph, with gusts as high as 23 mph.
Wednesday Night
Mostly clear, with a low around 74. South southwest wind 10 to 13 mph, with gusts as high as 24 mph.
Thursday
Sunny, with a high near 90. South southwest wind 10 to 17 mph, with gusts as high as 28 mph.
Thursday Night
Showers likely and possibly a thunderstorm before 1am. Partly cloudy, with a low around 68. South southwest wind 9 to 15 mph becoming west after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Sunny, with a high near 83.
Friday Night
Mostly clear, with a low around 62.
Saturday
Sunny, with a high near 84.
Saturday Night
Partly cloudy, with a low around 64.
Sunday
A chance of showers. Mostly sunny, with a high near 80.
Sunday Night
Partly cloudy, with a low around 60.
Monday
Mostly sunny, with a high near 76.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Lerna IL
39.42°N 88.28°W (Elev. 741 ft)
39.42°N 88.28°W (Elev. 741 ft)
5:06 am CDT Jun 9, 2026
5am CDT Jun 9, 2026-6pm CDT Jun 15, 2026



