Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Fair and Breezy

90°F

32°C

Humidity 54%
Wind Speed S 25 G 39 mph
Barometer 29.50 in (998.7 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 17 Jun 3:56 pm CDT
Extended Forecast for

Dahlgren IL

Wind Advisory June 17, 06:46pm until June 17, 08:00pm
Click here for hazard details and duration
...
  •  
    Wind Advisory June 17, 06:46pm until June 17, 08:00pm

    NOW until 8:00pm Wed

    Wind Advisory

  • Tonight

    Low: 71 °F

    Heavy Rain
    and Breezy

  • Thursday

    Thursday: A slight chance of showers between 4pm and 5pm.  Mostly sunny, with a high near 84. West northwest wind 5 to 8 mph.  Chance of precipitation is 20%.

    High: 84 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: A 10 percent chance of showers before 7pm.  Partly cloudy, with a low around 61. Northwest wind around 6 mph becoming calm  in the evening.

    Low: 61 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Juneteenth

    Juneteenth: Sunny, with a high near 83. Calm wind.

    High: 83 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 85. Light south wind.

    High: 85 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 67. Light south southeast wind.

    Low: 67 °F

    Mostly Clear
    then Chance
    T-storms

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm.  Partly sunny, with a high near 84. South southeast wind 6 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 23 mph.

    High: 84 °F

    Showers
    Likely

Detailed Forecast

Tonight
Showers and thunderstorms, mainly before 3am. Some of the storms could produce heavy rainfall. Low around 71. Breezy, with a west southwest wind 19 to 29 mph decreasing to 9 to 19 mph after midnight. Winds could gust as high as 37 mph. Chance of precipitation is 90%.
Thursday
A slight chance of showers between 4pm and 5pm. Mostly sunny, with a high near 84. West northwest wind 5 to 8 mph. Chance of precipitation is 20%.
Thursday Night
A 10 percent chance of showers before 7pm. Partly cloudy, with a low around 61. Northwest wind around 6 mph becoming calm in the evening.
Juneteenth
Sunny, with a high near 83. Calm wind.
Friday Night
Partly cloudy, with a low around 64. Calm wind.
Saturday
Mostly sunny, with a high near 85. Light south wind.
Saturday Night
A 50 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 67. Light south southeast wind.
Sunday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 84. South southeast wind 6 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 23 mph.
Sunday Night
Showers and possibly a thunderstorm before 1am, then showers likely. Mostly cloudy, with a low around 68. Southwest wind 11 to 15 mph becoming west northwest in the evening. Winds could gust as high as 21 mph.
Monday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81. North wind 11 to 13 mph, with gusts as high as 18 mph.
Monday Night
Partly cloudy, with a low around 62. North wind 5 to 9 mph becoming light after midnight.
Tuesday
Mostly sunny, with a high near 81. East northeast wind around 5 mph.
Tuesday Night
Partly cloudy, with a low around 62. Calm wind.
Wednesday
Mostly sunny, with a high near 84. Light northwest wind.
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ABOUT THIS FORECAST

 
Point Forecast:
Dahlgren IL
 38.19°N 88.67°W
2:26 pm CDT Jun 17, 2026
6pm CDT Jun 17, 2026-6pm CDT Jun 24, 2026
 
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Additional Resources

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