Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Fair

35°F

2°C

Humidity 100%
Wind Speed Calm
Barometer 30.31 in (1027.0 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 4 Nov 2:56 am CST
Extended Forecast for

3 Miles SE Dahlgren IL

  • Overnight

    Overnight: Patchy fog before 4am.  Otherwise, partly cloudy, with a low around 36. Calm wind.

    Low: 36 °F

    Patchy Fog

  • Tuesday

    Tuesday: Sunny, with a high near 66. Light southeast wind becoming south 9 to 14 mph in the morning. Winds could gust as high as 20 mph.

    High: 66 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 50. Southwest wind around 11 mph, with gusts as high as 24 mph.

    Low: 50 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 71. Southwest wind 7 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 71 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 39. North northwest wind around 6 mph becoming light and variable  in the evening.

    Low: 39 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 64. Southeast wind 5 to 10 mph.

    High: 64 °F

    Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers after midnight.  Partly cloudy, with a low around 51. South wind 8 to 13 mph, with gusts as high as 23 mph.

    Low: 51 °F

    Partly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers likely and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon.  Partly sunny, with a high near 70. South southwest wind 10 to 16 mph becoming west in the afternoon. Winds could gust as high as 23 mph.

    High: 70 °F

    Showers
    Likely then
    Chance
    T-storms

  • Friday Night

    Friday Night: Mostly clear, with a low around 41. West wind 5 to 8 mph becoming calm  after midnight.

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Overnight
Patchy fog before 4am. Otherwise, partly cloudy, with a low around 36. Calm wind.
Tuesday
Sunny, with a high near 66. Light southeast wind becoming south 9 to 14 mph in the morning. Winds could gust as high as 20 mph.
Tuesday Night
Partly cloudy, with a low around 50. Southwest wind around 11 mph, with gusts as high as 24 mph.
Wednesday
Sunny, with a high near 71. Southwest wind 7 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
Clear, with a low around 39. North northwest wind around 6 mph becoming light and variable in the evening.
Thursday
Sunny, with a high near 64. Southeast wind 5 to 10 mph.
Thursday Night
A 30 percent chance of showers after midnight. Partly cloudy, with a low around 51. South wind 8 to 13 mph, with gusts as high as 23 mph.
Friday
Showers likely and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 70. South southwest wind 10 to 16 mph becoming west in the afternoon. Winds could gust as high as 23 mph.
Friday Night
Mostly clear, with a low around 41. West wind 5 to 8 mph becoming calm after midnight.
Saturday
Sunny, with a high near 65. Calm wind becoming southwest 5 to 9 mph in the morning.
Saturday Night
A slight chance of showers. Partly cloudy, with a low around 40. South southwest wind 7 to 9 mph becoming west northwest after midnight.
Sunday
Sunny, with a high near 50. Northwest wind 10 to 16 mph, with gusts as high as 22 mph.
Sunday Night
Mostly clear, with a low around 28. Northwest wind 5 to 10 mph.
Monday
Sunny, with a high near 46. Northwest wind 6 to 10 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Dahlgren IL
 38.17°N 88.64°W
3:16 am CST Nov 4, 2025
3am CST Nov 4, 2025-6pm CST Nov 10, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database