Hazardous Weather Conditions
Current conditions at
Mattoon / Charleston, Coles County Memorial Airport (KMTO)
Lat: 39.48°NLon: 88.28°WElev: 722ft.
Thunderstorm Rain Fog/Mist
71°F
22°C
| Humidity | 96% |
| Wind Speed | S 13 mph |
| Barometer | 30.08 in (1018.0 mb) |
| Dewpoint | 70°F (21°C) |
| Visibility | 2.50 mi |
| Last update | 14 Aug 9:53 am CDT |
Extended Forecast for
Sullivan IL
Flood Watch August 14, 10:32am until August 14, 04:00pm
NOW until 4:00pm Fri
Flood Watch
Today
High: 88 °F
Showers
LikelyTonight
Low: 74 °F
Partly Cloudy
then Chance
ShowersSaturday
High: 92 °F
Chance
ShowersSaturday Night
Low: 74 °F
Partly Cloudy
Sunday
High: 91 °F
Mostly Sunny
then Chance
T-stormsSunday Night
Low: 69 °F
Chance
T-stormsMonday
High: 83 °F
Mostly Sunny
Monday Night
Low: 62 °F
Partly Cloudy
Detailed Forecast
Today
Showers likely and possibly a thunderstorm before 1pm, then a slight chance of showers between 1pm and 2pm. Mostly cloudy, with a high near 88. South southeast wind 5 to 8 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Tonight
A slight chance of showers before 3am, then a chance of showers after 5am. Partly cloudy, with a low around 74. East wind around 6 mph. Chance of precipitation is 30%.
Saturday
A 30 percent chance of showers, mainly between 11am and 1pm. Mostly sunny, with a high near 92. Heat index values as high as 106. East southeast wind 6 to 9 mph becoming southwest in the morning. Winds could gust as high as 16 mph.
Saturday Night
Partly cloudy, with a low around 74. Southwest wind around 6 mph.
Sunday
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 91. West northwest wind 6 to 9 mph, with gusts as high as 15 mph. Chance of precipitation is 30%.
Sunday Night
A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 69. North northwest wind 5 to 8 mph.
Monday
Mostly sunny, with a high near 83. North wind 6 to 9 mph.
Monday Night
Partly cloudy, with a low around 62.
Tuesday
Sunny, with a high near 84.
Tuesday Night
Mostly clear, with a low around 66.
Wednesday
Mostly sunny, with a high near 89.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 68.
Thursday
Mostly sunny, with a high near 83.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Sullivan IL
39.61°N 88.61°W (Elev. 669 ft)
39.61°N 88.61°W (Elev. 669 ft)
9:37 am CDT Aug 14, 2026
10am CDT Aug 14, 2026-6pm CDT Aug 20, 2026
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