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.

A Few Clouds

79°F

26°C

Humidity 42%
Wind Speed NE 10 mph
Barometer 30.21 in (1022.9 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 23 Jun 12:56 pm CDT
Extended Forecast for

3 Miles WSW Belle Rive IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 82. North wind 3 to 5 mph.

    High: 82 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 61. Light north wind.

    Low: 61 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 84. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 84 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms, then a chance of showers after 1am. Partly cloudy, with a low around 66. Light south southwest wind. Chance of precipitation is 30%.

    Low: 66 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 87. Light south southwest wind.

    High: 87 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Low around 68. Calm wind. Chance of precipitation is 90%.

    Low: 68 °F

    Showers

  • Friday

    Friday: Showers and possibly a thunderstorm before 1pm, then showers and thunderstorms likely after 1pm. High near 83. Light south southwest wind becoming west southwest 5 to 9 mph in the morning. Chance of precipitation is 90%.

    High: 83 °F

    Showers then
    T-storms

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 70. Southwest wind around 6 mph becoming calm in the evening.

    Low: 70 °F

    Showers
    Likely

  • Saturday

    Saturday: A chance of showers and thunderstorms. Partly sunny, with a high near 88. Calm wind becoming southwest around 6 mph in the morning.

    High: 88 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 82. North wind 3 to 5 mph.
Tonight
Partly cloudy, with a low around 61. Light north wind.
Wednesday
Mostly sunny, with a high near 84. Calm wind becoming south southwest around 5 mph in the afternoon.
Wednesday Night
A slight chance of showers and thunderstorms, then a chance of showers after 1am. Partly cloudy, with a low around 66. Light south southwest wind. Chance of precipitation is 30%.
Thursday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 87. Light south southwest wind.
Thursday Night
Showers and possibly a thunderstorm. Low around 68. Calm wind. Chance of precipitation is 90%.
Friday
Showers and possibly a thunderstorm before 1pm, then showers and thunderstorms likely after 1pm. High near 83. Light south southwest wind becoming west southwest 5 to 9 mph in the morning. Chance of precipitation is 90%.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 70. Southwest wind around 6 mph becoming calm in the evening.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 88. Calm wind becoming southwest around 6 mph in the morning.
Saturday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 72. South wind 3 to 5 mph.
Sunday
Sunny, with a high near 94. South southwest wind 6 to 11 mph, with gusts as high as 18 mph.
Sunday Night
Mostly clear, with a low around 74. South wind 6 to 10 mph.
Monday
Sunny, with a high near 96. South southwest wind 5 to 10 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Belle Rive IL
 38.22°N 88.81°W
Last Update:
1:16 pm CDT Jun 23, 2026
Forecast Valid:
1pm CDT Jun 23, 2026-6pm CDT Jun 29, 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