Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33° N Lon: 88.85° W Elev: 466 ft.

Fair

72°F

22°C

Humidity 76%
Wind Speed Calm
Barometer 30.10 in (1019.5 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 1 Oct 6:56 pm CDT
Detailed forecast for

Jefferson County

Tonight
Mostly cloudy. Lows in the lower 60s. East winds around 5 mph.
Thursday
Mostly sunny. Highs in the upper 80s. Southeast winds around 5 mph.
Thursday Night
Mostly clear. Lows in the lower 60s. South winds around 5 mph.
Friday
Sunny. Highs in the upper 80s. Southwest winds around 5 mph.
Friday Night
Clear. Lows in the upper 50s. South winds around 5 mph.
Saturday Through Sunday
Clear. Highs in the upper 80s. Lows in the upper 50s.
Sunday Night And Monday
Mostly clear. Lows in the lower 60s. Highs in the upper 80s.
Monday Night Through Tuesday Night
Partly cloudy. Lows around 60. Highs in the lower 80s.
Wednesday
Mostly sunny. Highs in the upper 70s.



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559 PM CDT Wed Oct 1 2025
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database