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Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Fair

76°F

24°C

Humidity 94%
Wind Speed SW 7 mph
Barometer 29.92 in (1012.9 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index76°F (24°C)
Last update 29 Jun 1:56 am CDT
Extended Forecast for

3 Miles WNW Opdyke IL

Extreme Heat Warning June 29, 11:00am until July 3, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning

  • Overnight

    Overnight: Mostly clear, with a low around 74. Light south wind.

    Low: 74 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 94. Heat index values as high as 105. South southwest wind 5 to 11 mph.

    High: 94 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 75. South southwest wind 5 to 9 mph becoming light after midnight.

    Low: 75 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 95. Heat index values as high as 105. Southwest wind 3 to 8 mph.

    High: 95 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 73. South wind 5 to 7 mph becoming calm after midnight.

    Low: 73 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 96. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 96 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 76. Light south wind.

    Low: 76 °F

    Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 97. Light south southwest wind.

    High: 97 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 77. Calm wind.

    Low: 77 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 74. Light south wind.
Monday
Mostly sunny, with a high near 94. Heat index values as high as 105. South southwest wind 5 to 11 mph.
Monday Night
Mostly clear, with a low around 75. South southwest wind 5 to 9 mph becoming light after midnight.
Tuesday
Sunny, with a high near 95. Heat index values as high as 105. Southwest wind 3 to 8 mph.
Tuesday Night
Clear, with a low around 73. South wind 5 to 7 mph becoming calm after midnight.
Wednesday
Sunny, with a high near 96. Calm wind becoming south southwest around 5 mph in the afternoon.
Wednesday Night
Clear, with a low around 76. Light south wind.
Thursday
Sunny and hot, with a high near 97. Light south southwest wind.
Thursday Night
Mostly clear, with a low around 77. Calm wind.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 94. Light and variable wind.
Friday Night
Partly cloudy, with a low around 76. Calm wind.
Independence Day
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 94. Calm wind.
Saturday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 75. Calm wind.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 91. Light west southwest wind.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Opdyke IL
 38.31°N 88.8°W
Last Update:
1:21 am CDT Jun 29, 2026
Forecast Valid:
2am CDT Jun 29, 2026-6pm CDT Jul 5, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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