Hazardous Weather Conditions
Current conditions at
Mount Vernon Airport (KMVN)
Lat: 38.33°NLon: 88.85°WElev: 466ft.
Partly Cloudy
83°F
28°C
| Humidity | 74% |
| Wind Speed | Calm |
| Barometer | 29.96 in (1014.6 mb) |
| Dewpoint | 74°F (23°C) |
| Visibility | 10.00 mi |
| Heat Index | 90°F (32°C) |
| Last update | 25 Jul 6:56 pm CDT |
Extended Forecast for
Mount Vernon IL
Heat Advisory July 26, 11:00am until July 28, 07:00pm
Tonight
Low: 73 °F
Partly Cloudy
then Patchy
FogSunday
High: 93 °F
Patchy Fog
then Slight
Chance
T-stormsSunday Night
Low: 75 °F
Slight Chance
T-storms then
Partly CloudyMonday
High: 98 °F
Hot
Monday Night
Low: 77 °F
Mostly Clear
Tuesday
High: 94 °F
Sunny
Tuesday Night
Low: 69 °F
Partly Cloudy
Wednesday
High: 89 °F
Sunny
Wednesday Night
Low: 67 °F
Mostly Clear
Detailed Forecast
Tonight
Patchy fog after 1am. Otherwise, increasing clouds, with a low around 73. Calm wind.
Sunday
A 10 percent chance of showers and thunderstorms after 5pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 93. Heat index values as high as 106. Calm wind.
Sunday Night
A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 75. Calm wind.
Monday
Mostly sunny and hot, with a high near 98. Heat index values as high as 111. Calm wind becoming southwest 5 to 9 mph in the morning.
Monday Night
Mostly clear, with a low around 77. South southwest wind 6 to 8 mph.
Tuesday
Sunny, with a high near 94. Northwest wind 5 to 10 mph.
Tuesday Night
Partly cloudy, with a low around 69. North wind 5 to 8 mph becoming calm after midnight.
Wednesday
Sunny, with a high near 89. Calm wind becoming north 5 to 7 mph in the morning.
Wednesday Night
Mostly clear, with a low around 67. North wind around 6 mph becoming calm in the evening.
Thursday
Sunny, with a high near 89. Light northeast wind.
Thursday Night
Partly cloudy, with a low around 68. Light north wind.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 89. Calm wind becoming north around 5 mph in the afternoon.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 70. North northeast wind around 5 mph becoming calm in the evening.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 89. Calm wind becoming north 5 to 7 mph in the afternoon.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Mount Vernon IL
38.31°N 88.91°W
38.31°N 88.91°W
5:31 pm CDT Jul 25, 2026
7pm CDT Jul 25, 2026-6pm CDT Aug 1, 2026
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