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

96°F

36°C

Humidity 52%
Wind Speed S 10 mph
Barometer 30.04 in (1016.9 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index109°F (43°C)
Last update 30 Jun 3:56 pm CDT
Extended Forecast for

3 Miles W Belle Rive IL

Extreme Heat Warning June 30, 04:22pm until July 3, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning June 30, 04:22pm until July 3, 08:00pm

    NOW until 8:00pm Fri

    Extreme Heat Warning

  • This Afternoon

    High: 94 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 73. South southwest wind 5 to 7 mph becoming calm in the evening.

    Low: 73 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 95. Heat index values as high as 106. Calm wind becoming south southwest 5 to 7 mph in the afternoon.

    High: 95 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 75. South wind around 5 mph becoming calm in the evening.

    Low: 75 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 96. Light southwest wind.

    High: 96 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 76. Light and variable wind.

    Low: 76 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 95. Light and variable wind.

    High: 95 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, mainly before 1am. Mostly clear, with a low around 74. Light and variable wind.

    Low: 74 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 94. Heat index values as high as 108. South southwest wind around 7 mph.
Tonight
Clear, with a low around 73. South southwest wind 5 to 7 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 95. Heat index values as high as 106. Calm wind becoming south southwest 5 to 7 mph in the afternoon.
Wednesday Night
Clear, with a low around 75. South wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 96. Light southwest wind.
Thursday Night
Mostly clear, with a low around 76. Light and variable wind.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 95. Light and variable wind.
Friday Night
A chance of showers and thunderstorms, mainly before 1am. Mostly clear, with a low around 74. Light and variable wind.
Independence Day
A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 94. Calm wind.
Saturday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 73. Calm wind.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 93. Calm wind.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 73. Calm wind.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 92. Light north wind.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Belle Rive IL
 38.24°N 88.81°W
Last Update:
2:20 pm CDT Jun 30, 2026
Forecast Valid:
4pm CDT Jun 30, 2026-6pm CDT Jul 6, 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