Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

A Few Clouds and Windy

88°F

31°C

Humidity 54%
Wind Speed S 32 G 38 mph
Barometer 29.52 in (999.5 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 17 Jun 1:56 pm CDT
Extended Forecast for

Dahlgren IL

Wind Advisory June 17, 02:04pm until June 17, 08:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory June 17, 02:04pm until June 17, 08:00pm

    NOW until 8:00pm Wed

    Wind Advisory

  • This Afternoon

    High: 89 °F

    Sunny and
    Windy

  • Tonight

    Tonight: Showers and thunderstorms, mainly before 3am. Some of the storms could produce heavy rainfall.  Low around 70. Breezy, with a west southwest wind 21 to 26 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 33 mph.  Chance of precipitation is 90%.

    Low: 70 °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 63. Calm wind.

    Low: 63 °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 chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 66. Light south southeast wind.

    Low: 66 °F

    Mostly Clear
    then Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 89. Windy, with a south southwest wind 25 to 30 mph, with gusts as high as 38 mph.
Tonight
Showers and thunderstorms, mainly before 3am. Some of the storms could produce heavy rainfall. Low around 70. Breezy, with a west southwest wind 21 to 26 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 33 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 63. Calm wind.
Saturday
Mostly sunny, with a high near 85. Light south wind.
Saturday Night
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 66. 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 22 mph.
Sunday Night
Showers and possibly a thunderstorm before 1am, then showers likely. Mostly cloudy, with a low around 67. 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 and thunderstorms. 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.
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ABOUT THIS FORECAST

 
Point Forecast:
Dahlgren IL
 38.19°N 88.7°W
1:26 pm CDT Jun 17, 2026
2pm CDT Jun 17, 2026-6pm CDT Jun 23, 2026
 
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