Hazardous Weather Conditions
Current conditions at
Mount Vernon Airport (KMVN)
Lat: 38.33°NLon: 88.85°WElev: 466ft.
Fair
73°F
23°C
| Humidity | 96% |
| Wind Speed | Calm |
| Barometer | 29.92 in (1013.3 mb) |
| Dewpoint | 72°F (22°C) |
| Visibility | 10.00 mi |
| Last update | 19 Aug 10:56 pm CDT |
Extended Forecast for
3 Miles SSE Dahlgren IL
Tonight
Low: 68 °F
Showers
LikelyThursday
High: 86 °F
Decreasing
CloudsThursday Night
Low: 65 °F
Partly Cloudy
Friday
High: 87 °F
Mostly Sunny
Friday Night
Low: 66 °F
Mostly Clear
Saturday
High: 87 °F
Mostly Sunny
Saturday Night
Low: 63 °F
Mostly Clear
Sunday
High: 85 °F
Mostly Sunny
Sunday Night
Low: 62 °F
Mostly Cloudy
then Slight
Chance
Showers
Detailed Forecast
Tonight
Showers likely and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms, mainly between midnight and 4am. Mostly cloudy, with a low around 68. Calm wind. Chance of precipitation is 60%.
Thursday
Cloudy, then gradually becoming mostly sunny, with a high near 86. Calm wind becoming north northeast around 6 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 65. Light north northeast wind.
Friday
Mostly sunny, with a high near 87. Light north northwest wind.
Friday Night
Mostly clear, with a low around 66. Calm wind.
Saturday
Mostly sunny, with a high near 87. Calm wind becoming northwest 5 to 9 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 63. Light north wind.
Sunday
Mostly sunny, with a high near 85. Calm wind becoming north 5 to 7 mph in the afternoon.
Sunday Night
A slight chance of showers after 1am. Partly cloudy, with a low around 62. Light east wind.
Monday
A slight chance of showers before 1pm. Mostly sunny, with a high near 85. Calm wind becoming southeast around 6 mph in the afternoon.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 64. Light east wind.
Tuesday
Mostly sunny, with a high near 88. Southeast wind 3 to 7 mph.
Tuesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 66. East wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 90. Calm wind becoming northwest around 6 mph in the morning.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
3 Miles SSE Dahlgren IL
38.15°N 88.67°W
38.15°N 88.67°W
11:06 pm CDT Aug 19, 2026
11pm CDT Aug 19, 2026-6pm CDT Aug 26, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
