Hazardous Weather Conditions
Current conditions at
Mount Vernon Airport (KMVN)
Lat: 38.33°NLon: 88.85°WElev: 466ft.
Mostly Cloudy
78°F
26°C
| Humidity | 87% |
| Wind Speed | S 9 mph |
| Barometer | 29.97 in (1014.9 mb) |
| Dewpoint | 74°F (23°C) |
| Visibility | 10.00 mi |
| Heat Index | 80°F (27°C) |
| Last update | 26 Jun 1:56 pm CDT |
Extended Forecast for
Dahlgren IL
Flood Watch June 26, 02:09pm until June 28, 07:00am
NOW until 7:00am Sun
Flood Watch
This Afternoon
High: 80 °F
Heavy Rain
Tonight
Low: 69 °F
Heavy Rain
then Showers
LikelySaturday
High: 84 °F
Chance
T-stormsSaturday Night
Low: 71 °F
Slight Chance
T-storms then
Chance
T-stormsSunday
High: 92 °F
Sunny
Sunday Night
Low: 73 °F
Mostly Clear
Monday
High: 94 °F
Sunny
Monday Night
Low: 75 °F
Mostly Clear
Detailed Forecast
This Afternoon
Showers likely and possibly a thunderstorm before 4pm, then showers and thunderstorms likely after 4pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 80. South wind around 9 mph. Chance of precipitation is 70%.
Tonight
Showers and thunderstorms likely before 3am, then showers likely and possibly a thunderstorm between 3am and 4am, then a chance of showers and thunderstorms after 4am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 69. South wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 70%.
Saturday
A chance of showers and thunderstorms before 3pm, then a slight chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 84. Light west southwest wind. Chance of precipitation is 30%.
Saturday Night
A 50 percent chance of showers and thunderstorms, mainly before 2am. Mostly cloudy, with a low around 71. Calm wind.
Sunday
Sunny, with a high near 92. Light southeast wind becoming south southwest 5 to 9 mph in the morning.
Sunday Night
Mostly clear, with a low around 73. South wind 3 to 7 mph.
Monday
Sunny, with a high near 94. South southwest wind 3 to 7 mph.
Monday Night
Mostly clear, with a low around 75. South wind around 6 mph becoming calm after midnight.
Tuesday
Sunny, with a high near 95. Calm wind.
Tuesday Night
Clear, with a low around 75. Calm wind.
Wednesday
Sunny, with a high near 95. Calm wind.
Wednesday Night
Mostly clear, with a low around 76. Calm wind.
Thursday
Sunny, with a high near 96. Calm wind.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Dahlgren IL
38.19°N 88.7°W
38.19°N 88.7°W
1:26 pm CDT Jun 26, 2026
2pm CDT Jun 26, 2026-6pm CDT Jul 2, 2026
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