Hazardous Weather Conditions
Current conditions at
Mount Vernon Airport (KMVN)
Lat: 38.33°NLon: 88.85°WElev: 466ft.
Fair
83°F
28°C
| Humidity | 61% |
| Wind Speed | NE 3 mph |
| Barometer | 29.89 in (1012.1 mb) |
| Dewpoint | 68°F (20°C) |
| Visibility | 10.00 mi |
| Heat Index | 86°F (30°C) |
| Last update | 19 Sep 6:56 pm CDT |
Extended Forecast for
3 Miles ENE Mount Vernon IL
Heat Advisory September 19, 07:20pm until September 20, 07:00pm
NOW until 7:00pm Sun
Heat Advisory
Tonight
Low: 72 °F
Partly Cloudy
Sunday
High: 96 °F
Increasing
CloudsSunday Night
Low: 66 °F
Partly Cloudy
then Chance
T-stormsMonday
High: 85 °F
Chance
ShowersMonday Night
Low: 59 °F
Slight Chance
T-storms then
Chance
ShowersTuesday
High: 76 °F
Slight Chance
ShowersTuesday Night
Low: 55 °F
Partly Cloudy
Wednesday
High: 76 °F
Mostly Sunny
Detailed Forecast
Tonight
Partly cloudy, with a low around 72. Light south southwest wind.
Sunday
Increasing clouds, with a high near 96. West wind 3 to 7 mph.
Sunday Night
A 50 percent chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 66. North northeast wind 5 to 7 mph becoming light and variable.
Monday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 85. Northeast wind 5 to 8 mph.
Monday Night
A slight chance of showers, then a chance of showers and thunderstorms after 10pm. Mostly cloudy, with a low around 59. North northeast wind 5 to 9 mph becoming light northeast. Chance of precipitation is 50%.
Tuesday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 76. North northeast wind 6 to 11 mph.
Tuesday Night
Partly cloudy, with a low around 55. North wind 6 to 11 mph becoming light.
Wednesday
Mostly sunny, with a high near 76. North wind 5 to 9 mph.
Wednesday Night
Partly cloudy, with a low around 54. North wind 5 to 8 mph becoming calm in the evening.
Thursday
Partly sunny, with a high near 78. Calm wind becoming north 5 to 7 mph in the morning.
Thursday Night
Partly cloudy, with a low around 56. North wind around 5 mph becoming calm in the evening.
Friday
A slight chance of showers. Partly sunny, with a high near 80. Calm wind becoming north northeast 5 to 8 mph in the morning.
Friday Night
Partly cloudy, with a low around 56. North northeast wind around 6 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 82. Calm wind becoming northeast around 6 mph in the morning.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
3 Miles ENE Mount Vernon IL
38.33°N 88.86°W
38.33°N 88.86°W
1:26 pm CDT Sep 19, 2026
7pm CDT Sep 19, 2026-6pm CDT Sep 26, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
