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
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch until March 5, 12:00pm

    NOW until 12:00pm Thu

    Flood Watch

  • Tonight

    Low: 56 °F

    Showers and
    Patchy Fog

  • Thursday

    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%.

    High: 70 °F

    Showers and
    Patchy Fog
    then Slight
    Chance
    T-storms

  • Thursday Night

    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%.

    Low: 59 °F

    Chance
    T-storms

  • Friday

    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%.

    High: 77 °F

    Chance
    Showers and
    Patchy Fog

  • Friday Night

    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%.

    Low: 60 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Saturday

    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%.

    High: 68 °F

    Showers then
    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 42. Northwest wind 5 to 7 mph becoming calm  in the evening.

    Low: 42 °F

    Mostly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 63. Calm wind becoming southwest around 6 mph.

    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
11:12 pm CST Mar 4, 2026
11pm CST Mar 4, 2026-6pm CDT Mar 11, 2026
 
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Additional Resources

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