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.

Overcast

N/A

Humidity NA
Wind Speed Vrbl 5 mph
Barometer 30.05 in
Dewpoint N/A
Visibility 10.00 mi
Last update 24 Nov 1:56 pm CST
Extended Forecast for

9 Miles WSW Johnsonville IL

  • This Afternoon

    This Afternoon: A 30 percent chance of rain, mainly after 5pm. Cloudy, with a high near 53. Southeast wind 5 to 7 mph.

    High: 53 °F

    Chance Rain

  • Tonight

    Tonight: Rain, mainly before 4am. Low around 49. Light east southeast wind. Chance of precipitation is 80%.

    Low: 49 °F

    Rain

  • Tuesday

    Tuesday: A 20 percent chance of rain before 8am. Mostly cloudy, with a high near 62. Calm wind becoming west southwest around 6 mph in the morning.

    High: 62 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 35. Light west wind becoming west northwest 10 to 15 mph in the evening. Winds could gust as high as 25 mph.

    Low: 35 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 45. West northwest wind 10 to 18 mph, with gusts as high as 29 mph.

    High: 45 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 26. West northwest wind 6 to 8 mph.

    Low: 26 °F

    Partly Cloudy

  • Thanksgiving Day

    Thanksgiving Day: Sunny, with a high near 41. West northwest wind 6 to 11 mph, with gusts as high as 18 mph.

    High: 41 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 19. West northwest wind around 5 mph becoming calm in the evening.

    Low: 19 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 39. Light and variable wind.

    High: 39 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of rain, mainly after 5pm. Cloudy, with a high near 53. Southeast wind 5 to 7 mph.
Tonight
Rain, mainly before 4am. Low around 49. Light east southeast wind. Chance of precipitation is 80%.
Tuesday
A 20 percent chance of rain before 8am. Mostly cloudy, with a high near 62. Calm wind becoming west southwest around 6 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 35. Light west wind becoming west northwest 10 to 15 mph in the evening. Winds could gust as high as 25 mph.
Wednesday
Mostly sunny, with a high near 45. West northwest wind 10 to 18 mph, with gusts as high as 29 mph.
Wednesday Night
Partly cloudy, with a low around 26. West northwest wind 6 to 8 mph.
Thanksgiving Day
Sunny, with a high near 41. West northwest wind 6 to 11 mph, with gusts as high as 18 mph.
Thursday Night
Mostly clear, with a low around 19. West northwest wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 39. Light and variable wind.
Friday Night
A chance of snow showers, mainly after midnight. Cloudy, with a low around 28. Calm wind becoming southeast around 6 mph after midnight.
Saturday
Rain and snow showers likely. Cloudy, with a high near 41. South southeast wind 7 to 9 mph.
Saturday Night
Showers likely. Cloudy, with a low around 31. South southeast wind 5 to 7 mph.
Sunday
A chance of showers. Mostly cloudy, with a high near 46. East wind 7 to 9 mph becoming south in the afternoon.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
9 Miles WSW Johnsonville IL
 38.48°N 88.68°W
Last Update:
2:21 pm CST Nov 24, 2025
Forecast Valid:
2pm CST Nov 24, 2025-6pm CST Nov 30, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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