Hazardous Weather Conditions
Current conditions at
Mattoon / Charleston, Coles County Memorial Airport (KMTO)
Lat: 39.48°NLon: 88.28°WElev: 722ft.
Fair
93°F
34°C
| Humidity | 50% |
| Wind Speed | SW 7 mph |
| Barometer | 30.01 in (1015.3 mb) |
| Dewpoint | 72°F (22°C) |
| Visibility | 10.00 mi |
| Heat Index | 101°F (38°C) |
| Last update | 3 Sep 11:53 am CDT |
Extended Forecast for
Charleston IL
Extreme Heat Warning September 3, 12:47pm until September 4, 07:00pm
NOW until 7:00pm Fri
Extreme Heat Warning
This Afternoon
High: 97 °F
Hot
Tonight
Low: 75 °F
Mostly Clear
Friday
High: 96 °F
Hot
Friday Night
Low: 73 °F
Mostly Clear
Saturday
High: 93 °F
Sunny
Saturday Night
Low: 69 °F
Mostly Clear
Sunday
High: 87 °F
Sunny
Sunday Night
Low: 63 °F
Mostly Clear
Detailed Forecast
This Afternoon
Sunny and hot, with a high near 97. Heat index values as high as 101. Southwest wind around 7 mph.
Tonight
Mostly clear, with a low around 75. Light south wind.
Friday
Sunny and hot, with a high near 96. Heat index values as high as 104. Southwest wind 3 to 6 mph.
Friday Night
Mostly clear, with a low around 73. Calm wind.
Saturday
Sunny, with a high near 93. Calm wind becoming north northwest around 6 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 69. Northeast wind around 6 mph.
Sunday
Sunny, with a high near 87. East northeast wind 7 to 9 mph, with gusts as high as 15 mph.
Sunday Night
Mostly clear, with a low around 63.
Labor Day
Sunny, with a high near 87.
Monday Night
Mostly clear, with a low around 65.
Tuesday
Sunny, with a high near 91.
Tuesday Night
Mostly clear, with a low around 72.
Wednesday
Sunny, with a high near 93.
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 Sep 3, 2026
12pm CDT Sep 3, 2026-6pm CDT Sep 9, 2026
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