Hazardous Weather Conditions
Current conditions at
Mattoon / Charleston, Coles County Memorial Airport (KMTO)
Lat: 39.48°NLon: 88.28°WElev: 722ft.
Fair
67°F
19°C
| Humidity | 79% |
| Wind Speed | S 9 mph |
| Barometer | 29.86 in (1010.6 mb) |
| Dewpoint | 60°F (16°C) |
| Visibility | 10.00 mi |
| Last update | 15 Apr 9:53 pm CDT |
Extended Forecast for
Charleston IL
Tonight
Low: 62 °F
Chance
T-storms then
Heavy RainThursday
High: 77 °F
Slight Chance
Showers then
SunnyThursday Night

Low: 55 °F
Mostly Clear
Friday

High: 82 °F
Mostly Sunny
Friday Night
Low: 53 °F
Chance
T-storms then
ShowersSaturday

High: 66 °F
Showers
LikelySaturday Night

Low: 38 °F
Partly Cloudy
Sunday

High: 57 °F
Sunny
Sunday Night

Low: 37 °F
Mostly Clear
Detailed Forecast
Tonight
Showers and thunderstorms before 4am, then showers likely. Some of the storms could produce heavy rainfall. Low around 62. South southwest wind 10 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
A 10 percent chance of showers before 7am. Cloudy through mid morning, then gradual clearing, with a high near 77. West southwest wind 11 to 14 mph, with gusts as high as 23 mph.
Thursday Night
Mostly clear, with a low around 55. West wind around 6 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 82. South wind 5 to 14 mph, with gusts as high as 24 mph.
Friday Night
A chance of showers before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then showers and possibly a thunderstorm after 1am. Low around 53. South wind 11 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
Showers likely, mainly before 1pm. Partly sunny, with a high near 66. West northwest wind 14 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
Partly cloudy, with a low around 38. West northwest wind 9 to 13 mph, with gusts as high as 22 mph.
Sunday
Sunny, with a high near 57.
Sunday Night
Mostly clear, with a low around 37.
Monday
Sunny, with a high near 65.
Monday Night
Mostly clear, with a low around 49.
Tuesday
Mostly sunny, with a high near 74.
Tuesday Night
Partly cloudy, with a low around 53.
Wednesday
Mostly sunny, with a high near 74.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Charleston IL
39.5°N 88.19°W (Elev. 650 ft)
39.5°N 88.19°W (Elev. 650 ft)
10:36 pm CDT Apr 15, 2026
10pm CDT Apr 15, 2026-6pm CDT Apr 22, 2026



