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Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Fair

40°F

4°C

Humidity 93%
Wind Speed Calm
Barometer 29.97 in
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Last update 25 Mar 5:56 am CDT
Extended Forecast for

Dahlgren IL

  • Today

    Today: Mostly sunny, with a high near 61. Calm wind becoming north northwest 5 to 9 mph in the morning.

    High: 61 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 39. North wind around 6 mph becoming calm in the evening.

    Low: 39 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 61. Light northwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 18 mph.

    High: 61 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 40. Calm wind.

    Low: 40 °F

    Mostly Clear

  • Thursday

    Thursday: A 40 percent chance of showers. Mostly sunny, with a high near 67. Light south southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 18 mph.

    High: 67 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers before 10pm, then a chance of showers and thunderstorms between 10pm and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 52. South wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

    Low: 52 °F

    Chance
    Showers

  • Friday

    Friday: A slight chance of showers, with thunderstorms also possible after 7am. Mostly sunny, with a high near 75. South southwest wind 10 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.

    High: 75 °F

    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 59. South wind around 14 mph, with gusts as high as 23 mph.

    Low: 59 °F

    Chance
    Showers

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 71. South wind 14 to 16 mph, with gusts as high as 25 mph.

    High: 71 °F

    Showers
    Likely

Detailed Forecast

Today
Mostly sunny, with a high near 61. Calm wind becoming north northwest 5 to 9 mph in the morning.
Tonight
Partly cloudy, with a low around 39. North wind around 6 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 61. Light northwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 18 mph.
Wednesday Night
Mostly clear, with a low around 40. Calm wind.
Thursday
A 40 percent chance of showers. Mostly sunny, with a high near 67. Light south southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 18 mph.
Thursday Night
A chance of showers before 10pm, then a chance of showers and thunderstorms between 10pm and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 52. South wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Friday
A slight chance of showers, with thunderstorms also possible after 7am. Mostly sunny, with a high near 75. South southwest wind 10 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.
Friday Night
A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 59. South wind around 14 mph, with gusts as high as 23 mph.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 71. South wind 14 to 16 mph, with gusts as high as 25 mph.
Saturday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 59. South wind around 14 mph, with gusts as high as 23 mph.
Sunday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 71. South southwest wind 11 to 15 mph, with gusts as high as 22 mph.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 42. West northwest wind around 11 mph, with gusts as high as 20 mph.
Monday
Mostly sunny, with a high near 57. West northwest wind 11 to 13 mph, with gusts as high as 20 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Dahlgren IL
 38.19°N 88.7°W
Last Update:
6:33 am CDT Mar 25, 2025
Forecast Valid:
7am CDT Mar 25, 2025-6pm CDT Mar 31, 2025
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation