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

80°F

27°C

Humidity 85%
Wind Speed W 3 mph
Barometer 29.76 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 28 Jul 6:56 am CDT
Extended Forecast for

2 Miles WNW Opdyke IL

Heat Advisory July 28, 07:58am until July 28, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 28, 07:58am until July 28, 07:00pm

    NOW until 7:00pm Tue

    Heat Advisory

  • Today

    High: 92 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 64. North northeast wind 3 to 7 mph.

    Low: 64 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 86. North northeast wind 3 to 8 mph.

    High: 86 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 63. North northeast wind around 5 mph becoming calm in the evening.

    Low: 63 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 87. Calm wind.

    High: 87 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 66. Calm wind.

    Low: 66 °F

    Partly Cloudy

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 86. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 40%.

    High: 86 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 68. Southeast wind around 5 mph becoming calm.

    Low: 68 °F

    Showers
    Likely

Detailed Forecast

Today
Mostly sunny, with a high near 92. West northwest wind 7 to 9 mph becoming north in the afternoon.
Tonight
Partly cloudy, with a low around 64. North northeast wind 3 to 7 mph.
Wednesday
Sunny, with a high near 86. North northeast wind 3 to 8 mph.
Wednesday Night
Clear, with a low around 63. North northeast wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 87. Calm wind.
Thursday Night
Partly cloudy, with a low around 66. Calm wind.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 86. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 40%.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 68. Southeast wind around 5 mph becoming calm.
Saturday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 80. East southeast wind 6 to 13 mph becoming north northeast in the afternoon.
Saturday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 67. North northeast wind 5 to 11 mph.
Sunday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 83. North northeast wind 6 to 11 mph.
Sunday Night
Mostly clear, with a low around 66. North northeast wind 5 to 8 mph becoming calm in the evening.
Monday
A slight chance of showers and thunderstorms. Sunny, with a high near 84. Calm wind becoming east northeast around 6 mph in the morning.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Opdyke IL
 38.28°N 88.77°W
Last Update:
5:41 am CDT Jul 28, 2026
Forecast Valid:
7am CDT Jul 28, 2026-6pm CDT Aug 3, 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