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Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Fair

69°F

21°C

Humidity 96%
Wind Speed Calm
Barometer 30.03 in (1016.9 mb)
Dewpoint 68°F (20°C)
Visibility 8.00 mi
Last update 15 Jun 10:56 pm CDT
Extended Forecast for

4 Miles SSE Dahlgren IL

  • Tonight

    Tonight: A 20 percent chance of showers after 4am. Mostly cloudy, with a low around 68. Calm wind.

    Low: 68 °F

    Slight Chance
    Showers

  • Monday

    Monday: A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 11am, then showers likely and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 80. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 60%.

    High: 80 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 69. Calm wind. Chance of precipitation is 30%.

    Low: 69 °F

    Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms. Mostly cloudy, then gradually becoming sunny, with a high near 89. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 89 °F

    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 73. South wind 5 to 7 mph.

    Low: 73 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 89. South southwest wind 10 to 15 mph, with gusts as high as 23 mph.

    High: 89 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 71. Southwest wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    Low: 71 °F

    T-storms
    Likely

  • Juneteenth

    Juneteenth: A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. West northwest wind around 7 mph.

    High: 85 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 66. Calm wind.

    Low: 66 °F

    Mostly Clear

Detailed Forecast

Tonight
A 20 percent chance of showers after 4am. Mostly cloudy, with a low around 68. Calm wind.
Monday
A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 11am, then showers likely and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 80. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 60%.
Monday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 69. Calm wind. Chance of precipitation is 30%.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly cloudy, then gradually becoming sunny, with a high near 89. Calm wind becoming southwest around 6 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 73. South wind 5 to 7 mph.
Wednesday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 89. South southwest wind 10 to 15 mph, with gusts as high as 23 mph.
Wednesday Night
Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 71. Southwest wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Juneteenth
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. West northwest wind around 7 mph.
Thursday Night
Mostly clear, with a low around 66. Calm wind.
Friday
Sunny, with a high near 88. Calm wind becoming south southwest around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 72. South wind around 6 mph.
Saturday
Sunny, with a high near 93. South southwest wind 6 to 11 mph.
Saturday Night
Mostly clear, with a low around 75. South southwest wind 6 to 8 mph.
Sunday
Sunny, with a high near 92. South southwest wind 6 to 9 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Dahlgren IL
 38.15°N 88.67°W
Last Update:
9:01 pm CDT Jun 15, 2025
Forecast Valid:
11pm CDT Jun 15, 2025-6pm CDT Jun 22, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation