Hazardous Weather Conditions
Current conditions at
Mount Vernon Airport (KMVN)
Lat: 38.33°NLon: 88.85°WElev: 466ft.
Rain Fog/Mist
58°F
14°C
| Humidity | 97% |
| Wind Speed | S 9 mph |
| Barometer | 29.98 in (1015.5 mb) |
| Dewpoint | 57°F (14°C) |
| Visibility | 2.50 mi |
| Last update | 4 Mar 10:56 pm CST |
Extended Forecast for
Mount Vernon IL
Flood Watch until March 5, 12:00pm
NOW until 12:00pm Thu

Flood Watch
Tonight

Low: 56 °F
Showers and
Patchy FogThursday
High: 70 °F
Showers and
Patchy Fog
then Slight
Chance
T-stormsThursday Night

Low: 59 °F
Chance
T-stormsFriday

High: 77 °F
Chance
Showers and
Patchy FogFriday Night
Low: 60 °F
Slight Chance
T-storms then
Showers
LikelySaturday
High: 68 °F
Showers then
Chance
ShowersSaturday Night

Low: 42 °F
Mostly Cloudy
Sunday

High: 63 °F
Sunny
Detailed Forecast
Tonight
Showers and possibly a thunderstorm. Patchy fog after midnight. Low around 56. Calm wind becoming southwest 5 to 8 mph after midnight. Chance of precipitation is 90%.
Thursday
Showers and thunderstorms before 2pm, then a slight chance of showers and thunderstorms after 3pm. Patchy fog before 11am. High near 70. South southeast wind 5 to 10 mph becoming west northwest in the afternoon. Chance of precipitation is 90%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. Light and variable wind becoming south 5 to 7 mph after midnight. Chance of precipitation is 50%.
Friday
A slight chance of showers before 7am, then a chance of showers after noon. Patchy fog before 7am. Otherwise, partly sunny, with a high near 77. South wind 7 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Friday Night
A slight chance of showers before 9pm, then a slight chance of showers and thunderstorms between 9pm and midnight, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 60. South wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Saturday
Showers, mainly before noon. High near 68. South southwest wind 8 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 80%.
Saturday Night
Mostly cloudy, with a low around 42. Northwest wind 5 to 7 mph becoming calm in the evening.
Sunday
Sunny, with a high near 63. Calm wind becoming southwest around 6 mph.
Sunday Night
Mostly clear, with a low around 48. Calm wind becoming south southwest around 5 mph after midnight.
Monday
Sunny, with a high near 74. South southwest wind 5 to 11 mph, with gusts as high as 18 mph.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 61. South southwest wind 8 to 10 mph, with gusts as high as 21 mph.
Tuesday
Showers and thunderstorms likely. Mostly cloudy, with a high near 75. South southwest wind 10 to 17 mph, with gusts as high as 25 mph.
Tuesday Night
Showers and possibly a thunderstorm. Mostly cloudy, with a low around 51. South southwest wind around 16 mph, with gusts as high as 28 mph.
Wednesday
Showers likely. Mostly cloudy, with a high near 60. Southwest wind 14 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.
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ABOUT THIS FORECAST
Point Forecast:
Mount Vernon IL
38.31°N 88.91°W
38.31°N 88.91°W
11:12 pm CST Mar 4, 2026
11pm CST Mar 4, 2026-6pm CDT Mar 11, 2026



