Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

66°F

19°C

Humidity 61%
Wind Speed Calm
Barometer 29.88 in (1012.1 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 20 Mar 8:56 pm CDT
Extended Forecast for

5 Miles SSW Dahlgren IL

  • Tonight

    Tonight: Partly cloudy, with a low around 53. West southwest wind around 6 mph becoming calm  in the evening.

    Low: 53 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 80. Northeast wind around 5 mph becoming light and variable.

    High: 80 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 61. Calm wind becoming south southwest 5 to 8 mph in the evening.

    Low: 61 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 84. South southwest wind 10 to 14 mph, with gusts as high as 22 mph.

    High: 84 °F

    Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers before 1am.  Partly cloudy, with a low around 40. West northwest wind 13 to 15 mph becoming north in the evening. Winds could gust as high as 24 mph.

    Low: 40 °F

    Slight Chance
    Showers

  • Monday

    Monday: Sunny, with a high near 57. North northeast wind 9 to 11 mph, with gusts as high as 20 mph.

    High: 57 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 39. Northeast wind around 6 mph.

    Low: 39 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 60. East southeast wind around 6 mph becoming south in the afternoon.

    High: 60 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers after 1am.  Mostly cloudy, with a low around 43. Light and variable wind becoming south southeast around 5 mph after midnight.

    Low: 43 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 53. West southwest wind around 6 mph becoming calm in the evening.
Saturday
Sunny, with a high near 80. Northeast wind around 5 mph becoming light and variable.
Saturday Night
Mostly clear, with a low around 61. Calm wind becoming south southwest 5 to 8 mph in the evening.
Sunday
Sunny, with a high near 84. South southwest wind 10 to 14 mph, with gusts as high as 22 mph.
Sunday Night
A 20 percent chance of showers before 1am. Partly cloudy, with a low around 40. West northwest wind 13 to 15 mph becoming north in the evening. Winds could gust as high as 24 mph.
Monday
Sunny, with a high near 57. North northeast wind 9 to 11 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 39. Northeast wind around 6 mph.
Tuesday
Partly sunny, with a high near 60. East southeast wind around 6 mph becoming south in the afternoon.
Tuesday Night
A slight chance of showers after 1am. Mostly cloudy, with a low around 43. Light and variable wind becoming south southeast around 5 mph after midnight.
Wednesday
A slight chance of showers before 1pm. Mostly cloudy, with a high near 66. East northeast wind 6 to 9 mph becoming south southeast in the afternoon.
Wednesday Night
Partly cloudy, with a low around 50. South southeast wind 6 to 9 mph.
Thursday
A slight chance of showers and thunderstorms. Sunny, with a high near 78. South wind 10 to 16 mph, with gusts as high as 23 mph.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 42. West southwest wind around 14 mph becoming north after midnight. Winds could gust as high as 23 mph.
Friday
A chance of showers. Partly sunny, with a high near 54. North wind 11 to 14 mph, with gusts as high as 22 mph.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW Dahlgren IL
 38.13°N 88.73°W
5:51 pm CDT Mar 20, 2026
9pm CDT Mar 20, 2026-6pm CDT Mar 27, 2026
 
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