Hazardous Weather Conditions
Current conditions at
Mattoon / Charleston, Coles County Memorial Airport (KMTO)
Lat: 39.48°NLon: 88.28°WElev: 722ft.
A Few Clouds
75°F
24°C
| Humidity | 66% |
| Wind Speed | S 13 G 21 mph |
| Barometer | 29.93 in (1013.2 mb) |
| Dewpoint | 63°F (17°C) |
| Visibility | 10.00 mi |
| Last update | 17 Apr 11:53 am CDT |
Extended Forecast for
Charleston IL
This Afternoon
High: 82 °F
Slight Chance
T-stormsTonight
Low: 50 °F
Chance
T-storms then
ShowersSaturday
High: 59 °F⇓
Showers
Likely then
Mostly SunnySaturday Night
Low: 36 °F
Mostly Clear
then Patchy
FrostSunday
High: 59 °F
Patchy Frost
then SunnySunday Night
Low: 36 °F
Mostly Clear
then Patchy
FrostMonday
High: 62 °F
Patchy Frost
then SunnyMonday Night
Low: 48 °F
Mostly Clear
Tuesday
High: 75 °F
Mostly Sunny
Detailed Forecast
This Afternoon
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 82. South wind 14 to 17 mph, with gusts as high as 30 mph.
Tonight
Showers and thunderstorms before 3am, then showers and possibly a thunderstorm, mainly after 3am. Low around 50. South wind around 15 mph becoming west southwest after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday
Showers likely and possibly a thunderstorm before 9am, then a slight chance of showers between 9am and 10am. Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 52 by 10am. 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, except higher amounts possible in thunderstorms.
Saturday Night
Patchy frost after 5am. Otherwise, mostly clear, with a low around 36. Northwest wind 6 to 13 mph, with gusts as high as 21 mph.
Sunday
Patchy frost before 8am. Otherwise, sunny, with a high near 59. West northwest wind 6 to 16 mph, with gusts as high as 28 mph.
Sunday Night
Patchy frost after 5am. Otherwise, mostly clear, with a low around 36. Northwest wind 5 to 8 mph becoming east northeast after midnight. Winds could gust as high as 16 mph.
Monday
Patchy frost before 8am. Otherwise, sunny, with a high near 62. East wind 5 to 7 mph becoming south in the afternoon.
Monday Night
Mostly clear, with a low around 48.
Tuesday
Mostly sunny, with a high near 75.
Tuesday Night
Mostly clear, with a low around 55.
Wednesday
Sunny, with a high near 77.
Wednesday Night
Mostly clear, with a low around 56.
Thursday
Mostly sunny, with a high near 80.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Charleston IL
39.5°N 88.19°W (Elev. 650 ft)
39.5°N 88.19°W (Elev. 650 ft)
12:36 pm CDT Apr 17, 2026
12pm CDT Apr 17, 2026-6pm CDT Apr 23, 2026
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