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.

Mostly Cloudy

62°F

17°C

Humidity 100%
Wind Speed SW 8 mph
Barometer 29.91 in (1012.9 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 10 Mar 4:56 am CDT
Extended Forecast for

Mount Vernon IL

  • Today

    Today: Mostly cloudy, with a high near 79. South southwest wind 6 to 16 mph, with gusts as high as 25 mph.

    High: 79 °F

    Mostly Cloudy

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Cloudy, with a low around 64. South southwest wind 15 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.

    Low: 64 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm before 1pm, then showers likely. Temperature rising to near 69 by 11am, then falling to around 51 during the remainder of the day. Breezy, with a south southwest wind 15 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 90%.

    High: 69 °F⇓

    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers before 7pm. Cloudy, then gradually becoming partly cloudy, with a low around 34. Breezy, with a north northwest wind 15 to 20 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 28 mph.

    Low: 34 °F

    Chance
    Showers and
    Breezy then
    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 54. Light and variable wind becoming west northwest around 6 mph in the morning.

    High: 54 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 42. South wind 6 to 11 mph increasing to 13 to 18 mph after midnight. Winds could gust as high as 31 mph.

    Low: 42 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 63. Southwest wind 10 to 16 mph, with gusts as high as 29 mph.

    High: 63 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 40. Light and variable wind becoming east around 6 mph after midnight.

    Low: 40 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 67. East wind 7 to 14 mph becoming south in the afternoon. Winds could gust as high as 21 mph.

    High: 67 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 79. South southwest wind 6 to 16 mph, with gusts as high as 25 mph.
Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Cloudy, with a low around 64. South southwest wind 15 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.
Wednesday
Showers and possibly a thunderstorm before 1pm, then showers likely. Temperature rising to near 69 by 11am, then falling to around 51 during the remainder of the day. Breezy, with a south southwest wind 15 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 90%.
Wednesday Night
A 30 percent chance of showers before 7pm. Cloudy, then gradually becoming partly cloudy, with a low around 34. Breezy, with a north northwest wind 15 to 20 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 28 mph.
Thursday
Sunny, with a high near 54. Light and variable wind becoming west northwest around 6 mph in the morning.
Thursday Night
Partly cloudy, with a low around 42. South wind 6 to 11 mph increasing to 13 to 18 mph after midnight. Winds could gust as high as 31 mph.
Friday
Partly sunny, with a high near 63. Southwest wind 10 to 16 mph, with gusts as high as 29 mph.
Friday Night
Mostly cloudy, with a low around 40. Light and variable wind becoming east around 6 mph after midnight.
Saturday
Mostly sunny, with a high near 67. East wind 7 to 14 mph becoming south in the afternoon. Winds could gust as high as 21 mph.
Saturday Night
Partly cloudy, with a low around 54. South wind 10 to 14 mph, with gusts as high as 25 mph.
Sunday
Showers likely. Mostly cloudy, with a high near 65. Breezy, with a south southwest wind 15 to 21 mph becoming west northwest in the afternoon. Winds could gust as high as 30 mph.
Sunday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 25. Blustery, with a northwest wind 16 to 20 mph, with gusts as high as 29 mph.
Monday
A slight chance of snow showers. Partly sunny, with a high near 37. Northwest wind around 14 mph, with gusts as high as 22 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mount Vernon IL
 38.31°N 88.91°W
Last Update:
4:36 am CDT Mar 10, 2026
Forecast Valid:
5am CDT Mar 10, 2026-6pm CDT Mar 16, 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