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.

Overcast

76°F

24°C

Humidity 74%
Wind Speed Vrbl 5 mph
Barometer 29.82 in (1009.7 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 2 Aug 12:56 pm CDT
Extended Forecast for

2 Miles ESE Dahlgren IL

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 80. North wind around 16 mph, with gusts as high as 22 mph.

    High: 80 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 62. North wind 5 to 9 mph becoming light after midnight.

    Low: 62 °F

    Decreasing
    Clouds

  • Monday

    Monday: Sunny, with a high near 84. North northeast wind 3 to 5 mph.

    High: 84 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 62. Calm wind.

    Low: 62 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 86. Calm wind.

    High: 86 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 63. Calm wind.

    Low: 63 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 88. Calm wind.

    High: 88 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 67. Calm wind.

    Low: 67 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 88. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 88 °F

    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 80. North wind around 16 mph, with gusts as high as 22 mph.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 62. North wind 5 to 9 mph becoming light after midnight.
Monday
Sunny, with a high near 84. North northeast wind 3 to 5 mph.
Monday Night
Clear, with a low around 62. Calm wind.
Tuesday
Sunny, with a high near 86. Calm wind.
Tuesday Night
Clear, with a low around 63. Calm wind.
Wednesday
Sunny, with a high near 88. Calm wind.
Wednesday Night
Mostly clear, with a low around 67. Calm wind.
Thursday
A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 88. Calm wind becoming south southwest around 5 mph in the afternoon.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 68. Calm wind.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 87. Calm wind becoming southwest around 5 mph.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 69. Calm wind.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 89. Light south southwest wind.
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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 Aug 2, 2026
Forecast Valid:
1pm CDT Aug 2, 2026-6pm CDT Aug 8, 2026
 
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Additional Resources

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