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

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

82°F

28°C

Humidity 53%
Wind Speed SW 18 G 22 mph
Barometer 30.04 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 5 Jun 11:56 am CDT
Extended Forecast for

3 Miles ENE Mount Vernon IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 87. South southwest wind around 15 mph, with gusts as high as 22 mph.

    High: 87 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 70. South southwest wind 5 to 13 mph, with gusts as high as 20 mph.

    Low: 70 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 90. Southwest wind 5 to 9 mph.

    High: 90 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 72. South southwest wind 5 to 7 mph becoming calm in the evening.

    Low: 72 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 87. Calm wind becoming south southeast 5 to 7 mph in the afternoon. Chance of precipitation is 60%.

    High: 87 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 72. Southeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 70%.

    Low: 72 °F

    Chance
    T-storms then
    Showers
    Likely

  • Monday

    Monday: Showers and possibly a thunderstorm. High near 85. South southeast wind 5 to 9 mph. Chance of precipitation is 80%.

    High: 85 °F

    Showers then
    T-storms

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 71. South wind 3 to 7 mph.

    Low: 71 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A chance of showers and thunderstorms. Partly sunny, with a high near 88. South southwest wind 6 to 8 mph.

    High: 88 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 87. South southwest wind around 15 mph, with gusts as high as 22 mph.
Tonight
Mostly cloudy, with a low around 70. South southwest wind 5 to 13 mph, with gusts as high as 20 mph.
Saturday
Mostly sunny, with a high near 90. Southwest wind 5 to 9 mph.
Saturday Night
Mostly cloudy, with a low around 72. South southwest wind 5 to 7 mph becoming calm in the evening.
Sunday
A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 87. Calm wind becoming south southeast 5 to 7 mph in the afternoon. Chance of precipitation is 60%.
Sunday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 72. Southeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 70%.
Monday
Showers and possibly a thunderstorm. High near 85. South southeast wind 5 to 9 mph. Chance of precipitation is 80%.
Monday Night
Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 71. South wind 3 to 7 mph.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 88. South southwest wind 6 to 8 mph.
Tuesday Night
A chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 73. South wind 3 to 5 mph.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 91. Southwest wind 5 to 8 mph.
Wednesday Night
Mostly clear, with a low around 75. South southwest wind 3 to 5 mph.
Thursday
Sunny, with a high near 93. Southwest wind 3 to 7 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Mount Vernon IL
 38.33°N 88.86°W
Last Update:
11:21 am CDT Jun 5, 2026
Forecast Valid:
12pm CDT Jun 5, 2026-6pm CDT Jun 11, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation