Hazardous Weather Conditions
Current conditions at
Mount Vernon Airport (KMVN)
Lat: 38.33°NLon: 88.85°WElev: 466ft.
Fair
71°F
22°C
| Humidity | 90% |
| Wind Speed | Calm |
| Barometer | 30.11 in (1019.6 mb) |
| Dewpoint | 68°F (20°C) |
| Visibility | 10.00 mi |
| Last update | 8 Sep 9:56 pm CDT |
Extended Forecast for
5 Miles SW Mount Vernon IL
Heat Advisory September 9, 11:00am until September 9, 08:00pm
Tonight
Low: 74 °F
Mostly Clear
Wednesday
High: 98 °F
Sunny then
Chance
T-stormsWednesday Night
Low: 70 °F
Chance
T-storms then
ShowersThursday
High: 85 °F
Showers
Thursday Night
Low: 64 °F
Mostly Cloudy
Friday
High: 88 °F
Mostly Sunny
Friday Night
Low: 66 °F
Mostly Clear
Saturday
High: 94 °F
Sunny then
Slight Chance
ShowersSaturday Night
Low: 68 °F
Slight Chance
Showers
Detailed Forecast
Tonight
Mostly clear, with a low around 74. Calm wind becoming south around 6 mph after midnight.
Wednesday
A slight chance of showers between noon and 1pm, then a chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 98. Heat index values as high as 105. South wind 7 to 13 mph becoming west in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Low around 70. Light and variable wind. Chance of precipitation is 90%.
Thursday
Showers and possibly a thunderstorm before 10am, then showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. High near 85. Calm wind becoming west northwest around 6 mph in the afternoon. Chance of precipitation is 90%.
Thursday Night
Mostly cloudy, with a low around 64. Calm wind.
Friday
Mostly sunny, with a high near 88. Light and variable wind.
Friday Night
Mostly clear, with a low around 66. Calm wind.
Saturday
A slight chance of showers after 1pm. Mostly sunny, with a high near 94. Calm wind becoming south southwest 5 to 7 mph in the morning.
Saturday Night
A slight chance of showers. Partly cloudy, with a low around 68. Calm wind.
Sunday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 93. Calm wind becoming southwest 5 to 7 mph in the morning.
Sunday Night
A slight chance of showers. Mostly clear, with a low around 67. North northwest wind around 5 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 93. South southwest wind 5 to 10 mph.
Monday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 68. South wind 5 to 7 mph.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 91. South southwest wind 5 to 9 mph becoming west in the afternoon.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
5 Miles SW Mount Vernon IL
38.27°N 88.97°W
38.27°N 88.97°W
7:21 pm CDT Sep 8, 2026
10pm CDT Sep 8, 2026-6pm CDT Sep 15, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
