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Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Heavy Rain Fog/Mist

70°F

21°C

Humidity 100%
Wind Speed Calm
Barometer 30.01 in (1016.2 mb)
Dewpoint 70°F (21°C)
Visibility 4.00 mi
Last update 16 Jun 11:56 am CDT
Extended Forecast for

Dahlgren IL

  • This Afternoon

    This Afternoon: Showers and possibly a thunderstorm. Steady temperature around 78. East southeast wind 3 to 6 mph. Chance of precipitation is 80%.

    High: 78 °F

    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly cloudy, with a low around 70. Light east southeast wind. Chance of precipitation is 50%.

    Low: 70 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A slight chance of showers, with thunderstorms also possible after 7am. Cloudy, then gradually becoming mostly sunny, with a high near 87. Southwest wind 5 to 7 mph. Chance of precipitation is 20%.

    High: 87 °F

    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73. South southwest wind 5 to 7 mph.

    Low: 73 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 88. South southwest wind 10 to 16 mph, with gusts as high as 24 mph.

    High: 88 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 70. Southwest wind 7 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.

    Low: 70 °F

    Showers
    Likely

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 85. West northwest wind around 6 mph.

    High: 85 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 68. Calm wind.

    Low: 68 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 89. Calm wind becoming south around 6 mph in the afternoon.

    High: 89 °F

    Sunny

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm. Steady temperature around 78. East southeast wind 3 to 6 mph. Chance of precipitation is 80%.
Tonight
A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly cloudy, with a low around 70. Light east southeast wind. Chance of precipitation is 50%.
Tuesday
A slight chance of showers, with thunderstorms also possible after 7am. Cloudy, then gradually becoming mostly sunny, with a high near 87. Southwest wind 5 to 7 mph. Chance of precipitation is 20%.
Tuesday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73. South southwest wind 5 to 7 mph.
Wednesday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 88. South southwest wind 10 to 16 mph, with gusts as high as 24 mph.
Wednesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 70. Southwest wind 7 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Juneteenth
Mostly sunny, with a high near 85. West northwest wind around 6 mph.
Thursday Night
Mostly clear, with a low around 68. Calm wind.
Friday
Sunny, with a high near 89. Calm wind becoming south 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 93. South southwest wind 6 to 9 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Dahlgren IL
 38.19°N 88.67°W
Last Update:
12:16 pm CDT Jun 16, 2025
Forecast Valid:
12pm CDT Jun 16, 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