National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Fair

62°F

17°C

Humidity 25%
Wind Speed Vrbl 7 mph
Barometer 29.94 in (1014.3 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 13 Mar 4:56 pm CDT
Extended Forecast for

2 Miles ESE Dahlgren IL

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 35. West northwest wind 5 to 8 mph becoming calm in the evening.

    Low: 35 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 64. East wind 6 to 11 mph becoming south southeast in the afternoon.

    High: 64 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 52. Southeast wind 7 to 14 mph, with gusts as high as 24 mph.

    Low: 52 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm, mainly after 4pm. Mostly cloudy, with a high near 71. Breezy, with a south wind 18 to 28 mph, with gusts as high as 40 mph. Chance of precipitation is 60%.

    High: 71 °F

    Breezy.
    Mostly Cloudy
    then Showers
    Likely

  • Sunday Night

    Sunday Night: Rain showers before 1am, then a chance of rain and snow showers between 1am and 4am, then a chance of snow showers after 4am. Some thunder is also possible. Low around 26. Breezy, with a south wind 21 to 25 mph becoming west after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 100%.

    Low: 26 °F

    Breezy.
    Showers then
    Rain/Snow

  • Monday

    Monday: A 30 percent chance of snow showers before 1pm. Mostly cloudy, with a high near 31. Blustery, with a west northwest wind around 23 mph, with gusts as high as 33 mph.

    High: 31 °F

    Chance Snow
    Showers and
    Blustery

  • Monday Night

    Monday Night: Partly cloudy, with a low around 14. Blustery, with a west northwest wind 13 to 20 mph, with gusts as high as 26 mph.

    Low: 14 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 36. West northwest wind 7 to 10 mph.

    High: 36 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of rain and snow showers after 1am. Mostly cloudy, with a low around 27. Light south southwest wind becoming south 6 to 11 mph in the evening. Winds could gust as high as 21 mph.

    Low: 27 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming clear, with a low around 35. West northwest wind 5 to 8 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 64. East wind 6 to 11 mph becoming south southeast in the afternoon.
Saturday Night
Increasing clouds, with a low around 52. Southeast wind 7 to 14 mph, with gusts as high as 24 mph.
Sunday
Showers likely and possibly a thunderstorm, mainly after 4pm. Mostly cloudy, with a high near 71. Breezy, with a south wind 18 to 28 mph, with gusts as high as 40 mph. Chance of precipitation is 60%.
Sunday Night
Rain showers before 1am, then a chance of rain and snow showers between 1am and 4am, then a chance of snow showers after 4am. Some thunder is also possible. Low around 26. Breezy, with a south wind 21 to 25 mph becoming west after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 100%.
Monday
A 30 percent chance of snow showers before 1pm. Mostly cloudy, with a high near 31. Blustery, with a west northwest wind around 23 mph, with gusts as high as 33 mph.
Monday Night
Partly cloudy, with a low around 14. Blustery, with a west northwest wind 13 to 20 mph, with gusts as high as 26 mph.
Tuesday
Sunny, with a high near 36. West northwest wind 7 to 10 mph.
Tuesday Night
A slight chance of rain and snow showers after 1am. Mostly cloudy, with a low around 27. Light south southwest wind becoming south 6 to 11 mph in the evening. Winds could gust as high as 21 mph.
Wednesday
Partly sunny, with a high near 56. South southwest wind 13 to 15 mph, with gusts as high as 23 mph.
Wednesday Night
Partly cloudy, with a low around 39. South southwest wind 5 to 7 mph.
Thursday
Sunny, with a high near 66. West southwest wind 5 to 7 mph.
Thursday Night
Mostly clear, with a low around 45. Light and variable wind becoming southwest around 6 mph in the evening.
Friday
Mostly sunny, with a high near 66. South wind 6 to 9 mph becoming west in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Dahlgren IL
 38.19°N 88.64°W
Last Update:
1:26 pm CDT Mar 13, 2026
Forecast Valid:
5pm CDT Mar 13, 2026-6pm CDT Mar 20, 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