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Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Fair

79°F

26°C

Humidity 44%
Wind Speed S 13 G 24 mph
Barometer 29.92 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 15 May 1:56 pm CDT
Extended Forecast for

2 Miles ENE Dahlgren IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 81. South wind around 13 mph, with gusts as high as 20 mph.

    High: 81 °F

    Mostly Sunny

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 3am. Mostly cloudy, with a low around 67. South wind 9 to 13 mph, with gusts as high as 22 mph.

    Low: 67 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Saturday

    Saturday: Showers and thunderstorms likely, mainly before noon. Mostly cloudy, with a high near 85. South southwest wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.

    High: 85 °F

    Showers
    Likely then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms between 9pm and midnight. Mostly cloudy, then gradually becoming clear, with a low around 65. South wind around 7 mph. Chance of precipitation is 20%.

    Low: 65 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 89. South wind 8 to 16 mph, with gusts as high as 22 mph.

    High: 89 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 68. South wind around 11 mph, with gusts as high as 20 mph.

    Low: 68 °F

    Mostly Clear

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. Breezy, with a south wind 13 to 20 mph, with gusts as high as 25 mph.

    High: 90 °F

    Breezy.
    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 72. South wind 13 to 15 mph, with gusts as high as 23 mph.

    Low: 72 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. Partly sunny, with a high near 83. South southwest wind 14 to 17 mph, with gusts as high as 24 mph.

    High: 83 °F

    Showers

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 81. South wind around 13 mph, with gusts as high as 20 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 3am. Mostly cloudy, with a low around 67. South wind 9 to 13 mph, with gusts as high as 22 mph.
Saturday
Showers and thunderstorms likely, mainly before noon. Mostly cloudy, with a high near 85. South southwest wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Saturday Night
A slight chance of showers and thunderstorms between 9pm and midnight. Mostly cloudy, then gradually becoming clear, with a low around 65. South wind around 7 mph. Chance of precipitation is 20%.
Sunday
Sunny, with a high near 89. South wind 8 to 16 mph, with gusts as high as 22 mph.
Sunday Night
Mostly clear, with a low around 68. South wind around 11 mph, with gusts as high as 20 mph.
Monday
A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. Breezy, with a south wind 13 to 20 mph, with gusts as high as 25 mph.
Monday Night
A chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 72. South wind 13 to 15 mph, with gusts as high as 23 mph.
Tuesday
Showers and possibly a thunderstorm. Partly sunny, with a high near 83. South southwest wind 14 to 17 mph, with gusts as high as 24 mph.
Tuesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 64. South southwest wind 5 to 9 mph becoming north northwest after midnight.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 74. North wind around 9 mph.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 56. North wind 5 to 7 mph.
Thursday
Mostly sunny, with a high near 75. Northeast wind around 8 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Dahlgren IL
 38.21°N 88.64°W
Last Update:
1:26 pm CDT May 15, 2026
Forecast Valid:
2pm CDT May 15, 2026-6pm CDT May 21, 2026
 
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Additional Resources

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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