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.

51°F

11°C

Humidity 39%
Wind Speed SW 9 G 16 mph
Barometer 30.22 in (1023.9 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 12 Mar 3:56 pm CDT
Extended Forecast for

Mount Vernon IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 53. West southwest wind around 7 mph.

    High: 53 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 43. Breezy, with a south wind 7 to 12 mph increasing to 16 to 21 mph after midnight. Winds could gust as high as 36 mph.

    Low: 43 °F

    Partly Cloudy
    then Partly
    Cloudy and
    Breezy

  • Friday

    Friday: Mostly sunny, with a high near 61. West wind 13 to 18 mph, with gusts as high as 32 mph.

    High: 61 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 36. West northwest wind around 6 mph becoming calm in the evening.

    Low: 36 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 64. East northeast wind 5 to 10 mph becoming southeast in the afternoon.

    High: 64 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 52. Southeast wind 7 to 11 mph, with gusts as high as 23 mph.

    Low: 52 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of showers, then showers and possibly a thunderstorm after 1pm. High near 70. Breezy, with a south wind 14 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 80%.

    High: 70 °F

    Breezy.
    Slight Chance
    Showers then
    Showers

  • Sunday Night

    Sunday Night: Rain showers before 1am, then a chance of rain and snow showers. Some thunder is also possible. Mostly cloudy, with a low around 25. Breezy, with a south southwest wind 23 to 25 mph becoming west northwest after midnight. Winds could gust as high as 37 mph.

    Low: 25 °F

    Showers and
    Breezy then
    Rain/Snow and
    Blustery

  • Monday

    Monday: A slight chance of snow showers before 1pm. Mostly cloudy, with a high near 31. Blustery, with a west northwest wind 21 to 24 mph, with gusts as high as 34 mph.

    High: 31 °F

    Slight Chance
    Snow Showers
    and Blustery

Detailed Forecast

This Afternoon
Sunny, with a high near 53. West southwest wind around 7 mph.
Tonight
Partly cloudy, with a low around 43. Breezy, with a south wind 7 to 12 mph increasing to 16 to 21 mph after midnight. Winds could gust as high as 36 mph.
Friday
Mostly sunny, with a high near 61. West wind 13 to 18 mph, with gusts as high as 32 mph.
Friday Night
Partly cloudy, with a low around 36. West northwest wind around 6 mph becoming calm in the evening.
Saturday
Partly sunny, with a high near 64. East northeast wind 5 to 10 mph becoming southeast in the afternoon.
Saturday Night
Mostly cloudy, with a low around 52. Southeast wind 7 to 11 mph, with gusts as high as 23 mph.
Sunday
A slight chance of showers, then showers and possibly a thunderstorm after 1pm. High near 70. Breezy, with a south wind 14 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 80%.
Sunday Night
Rain showers before 1am, then a chance of rain and snow showers. Some thunder is also possible. Mostly cloudy, with a low around 25. Breezy, with a south southwest wind 23 to 25 mph becoming west northwest after midnight. Winds could gust as high as 37 mph.
Monday
A slight chance of snow showers before 1pm. Mostly cloudy, with a high near 31. Blustery, with a west northwest wind 21 to 24 mph, with gusts as high as 34 mph.
Monday Night
Mostly clear, with a low around 13. West northwest wind 8 to 16 mph, with gusts as high as 24 mph.
Tuesday
Mostly sunny, with a high near 35. West wind 7 to 9 mph.
Tuesday Night
A slight chance of rain and snow showers. Mostly cloudy, with a low around 25. Southwest wind 6 to 8 mph becoming southeast in the evening.
Wednesday
A slight chance of rain and snow showers. Partly sunny, with a high near 53. South wind 9 to 11 mph, with gusts as high as 18 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Vernon IL
 38.31°N 88.91°W
Last Update:
1:21 pm CDT Mar 12, 2026
Forecast Valid:
4pm CDT Mar 12, 2026-6pm CDT Mar 18, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation