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Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Overcast

62°F

17°C

Humidity 62%
Wind Speed NW 8 G 20 mph
Barometer 29.80 in (1009.6 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 11 Nov 6:56 pm CST
Extended Forecast for

Dahlgren IL

  • Tonight

    Tonight: Cloudy during the early evening, then gradual clearing, with a low around 40. Breezy, with a northwest wind 15 to 20 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 29 mph.

    Low: 40 °F

    Clearing and
    Breezy then
    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers between 11am and 5pm. Mostly cloudy, with a high near 53. North northwest wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 20%.

    High: 53 °F

    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 31. North northwest wind 7 to 14 mph, with gusts as high as 20 mph.

    Low: 31 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 46. North northwest wind 8 to 15 mph, with gusts as high as 20 mph.

    High: 46 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 25. North northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 25 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 48. Light north northwest wind.

    High: 48 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 24. Calm wind.

    Low: 24 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 52. Light and variable wind.

    High: 52 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 28. Calm wind.

    Low: 28 °F

    Partly Cloudy

Detailed Forecast

Tonight
Cloudy during the early evening, then gradual clearing, with a low around 40. Breezy, with a northwest wind 15 to 20 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 29 mph.
Thursday
A slight chance of showers between 11am and 5pm. Mostly cloudy, with a high near 53. North northwest wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 31. North northwest wind 7 to 14 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 46. North northwest wind 8 to 15 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 25. North northwest wind 5 to 7 mph becoming calm in the evening.
Saturday
Sunny, with a high near 48. Light north northwest wind.
Saturday Night
Mostly clear, with a low around 24. Calm wind.
Sunday
Sunny, with a high near 52. Light and variable wind.
Sunday Night
Partly cloudy, with a low around 28. Calm wind.
Monday
Sunny, with a high near 52. Calm wind becoming east around 6 mph.
Monday Night
Mostly clear, with a low around 27. Calm wind.
Tuesday
Sunny, with a high near 54. Calm wind becoming east around 5 mph.
Tuesday Night
Clear, with a low around 28. Calm wind.
Wednesday
Sunny, with a high near 58. Calm wind becoming southeast around 6 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Dahlgren IL
 38.19°N 88.7°W
Last Update:
6:45 pm CST Nov 11, 2026
Forecast Valid:
7pm CST Nov 11, 2026-6pm CST Nov 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation