Current conditions at
Mattoon / Charleston, Coles County Memorial Airport (KMTO)
Lat: 39.48°NLon: 88.28°WElev: 722ft.
Fair
87°F
31°C
| Humidity | 43% |
| Wind Speed | S 8 mph |
| Barometer | 30.01 in (1015.7 mb) |
| Dewpoint | 62°F (17°C) |
| Visibility | 10.00 mi |
| Heat Index | 87°F (31°C) |
| Last update | 30 Aug 4:53 pm CDT |
Extended Forecast for
Charleston IL
Tonight
Low: 70 °F
Partly Cloudy
Monday
High: 93 °F
Sunny
Monday Night
Low: 74 °F
Mostly Clear
Tuesday
High: 96 °F
Hot
Tuesday Night
Low: 76 °F
Clear
Wednesday
High: 97 °F
Hot
Wednesday Night
Low: 76 °F
Mostly Clear
Thursday
High: 96 °F
Hot
Thursday Night
Low: 73 °F
Mostly Clear
then Chance
T-storms
Detailed Forecast
Tonight
Partly cloudy, with a low around 70. South wind 5 to 7 mph.
Monday
Sunny, with a high near 93. South southwest wind 7 to 10 mph, with gusts as high as 18 mph.
Monday Night
Mostly clear, with a low around 74. South wind 5 to 7 mph.
Tuesday
Sunny and hot, with a high near 96. Heat index values as high as 101. Southwest wind 6 to 8 mph.
Tuesday Night
Clear, with a low around 76. South southwest wind 3 to 6 mph.
Wednesday
Sunny and hot, with a high near 97. South southwest wind 6 to 8 mph.
Wednesday Night
Mostly clear, with a low around 76. South southwest wind 3 to 5 mph.
Thursday
Sunny and hot, with a high near 96.
Thursday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 73.
Friday
Sunny, with a high near 93.
Friday Night
Mostly clear, with a low around 70.
Saturday
Sunny, with a high near 89.
Saturday Night
Mostly clear, with a low around 66.
Sunday
Sunny, with a high near 86.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Charleston IL
39.48°N 88.19°W (Elev. 650 ft)
39.48°N 88.19°W (Elev. 650 ft)
4:36 pm CDT Aug 30, 2026
5pm CDT Aug 30, 2026-6pm CDT Sep 6, 2026
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