National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Fair

70°F

21°C

Humidity 71%
Wind Speed Vrbl 3 mph
Barometer 29.97 in (1014.9 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 1 Apr 3:56 pm CDT
Extended Forecast for

Mount Vernon IL

  • This Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 69. East wind around 7 mph.

    High: 69 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 2am. Mostly cloudy, with a low around 63. East wind 6 to 13 mph becoming south after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 40%.

    Low: 63 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms, mainly after 2pm. Mostly cloudy, with a high near 78. Breezy, with a south wind 14 to 23 mph, with gusts as high as 32 mph.

    High: 78 °F

    Breezy.
    Mostly Cloudy
    then Chance
    Showers

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 1am, then showers likely between 1am and 4am, then showers likely and possibly a thunderstorm after 4am. Partly cloudy, with a low around 64. South wind 10 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.

    Low: 64 °F

    Showers
    Likely

  • Friday

    Friday: Showers likely and possibly a thunderstorm before 7am, then showers likely between 7am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 80. South southwest wind 9 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.

    High: 80 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 59. South wind around 11 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.

    Low: 59 °F

    Chance
    Showers then
    Showers

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 68. South southwest wind 11 to 14 mph becoming west northwest in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 90%.

    High: 68 °F

    Showers

  • Saturday Night

    Saturday Night: A slight chance of showers before 1am. Partly cloudy, with a low around 40. West northwest wind 8 to 10 mph.

    Low: 40 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 58. Northwest wind 8 to 11 mph, with gusts as high as 18 mph.

    High: 58 °F

    Sunny

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 69. East wind around 7 mph.
Tonight
A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 2am. Mostly cloudy, with a low around 63. East wind 6 to 13 mph becoming south after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 40%.
Thursday
A 50 percent chance of showers and thunderstorms, mainly after 2pm. Mostly cloudy, with a high near 78. Breezy, with a south wind 14 to 23 mph, with gusts as high as 32 mph.
Thursday Night
Showers likely and possibly a thunderstorm before 1am, then showers likely between 1am and 4am, then showers likely and possibly a thunderstorm after 4am. Partly cloudy, with a low around 64. South wind 10 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.
Friday
Showers likely and possibly a thunderstorm before 7am, then showers likely between 7am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 80. South southwest wind 9 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Friday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 59. South wind around 11 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.
Saturday
Showers and possibly a thunderstorm. High near 68. South southwest wind 11 to 14 mph becoming west northwest in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 90%.
Saturday Night
A slight chance of showers before 1am. Partly cloudy, with a low around 40. West northwest wind 8 to 10 mph.
Sunday
Sunny, with a high near 58. Northwest wind 8 to 11 mph, with gusts as high as 18 mph.
Sunday Night
Clear, with a low around 37. Northwest wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 65. Calm wind becoming west northwest 5 to 7 mph in the morning.
Monday Night
Partly cloudy, with a low around 40. North wind 3 to 5 mph.
Tuesday
Mostly sunny, with a high near 58. North northeast wind 6 to 9 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Vernon IL
 38.31°N 88.91°W
Last Update:
1:26 pm CDT Apr 1, 2026
Forecast Valid:
4pm CDT Apr 1, 2026-6pm CDT Apr 7, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation