Current conditions at
Mount Vernon Airport (KMVN)
Lat: 38.33°NLon: 88.85°WElev: 466ft.
Fair
66°F
19°C
| Humidity | 42% |
| Wind Speed | SE 8 mph |
| Barometer | 30.24 in (1024.4 mb) |
| Dewpoint | 42°F (6°C) |
| Visibility | 10.00 mi |
| Last update | 20 Apr 5:56 pm CDT |
Extended Forecast for
Dahlgren IL
Tonight
Low: 49 °F
Clear
Tuesday
High: 77 °F
Sunny
Tuesday Night
Low: 54 °F
Mostly Clear
Wednesday
High: 76 °F
Sunny
Wednesday Night
Low: 56 °F
Mostly Clear
Thursday
High: 80 °F
Sunny
Thursday Night
Low: 62 °F
Partly Cloudy
then Chance
ShowersFriday
High: 77 °F
Showers
Friday Night
Low: 55 °F
Showers
Likely
Detailed Forecast
Tonight
Clear, with a low around 49. Calm wind becoming south 5 to 7 mph in the evening.
Tuesday
Sunny, with a high near 77. Southwest wind 7 to 17 mph, with gusts as high as 26 mph.
Tuesday Night
Mostly clear, with a low around 54. Southwest wind 8 to 11 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 76. Southwest wind 7 to 11 mph.
Wednesday Night
Mostly clear, with a low around 56. South wind around 6 mph.
Thursday
Sunny, with a high near 80. South wind 6 to 15 mph, with gusts as high as 22 mph.
Thursday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 62. South wind around 11 mph, with gusts as high as 21 mph.
Friday
Showers and possibly a thunderstorm. Partly sunny, with a high near 77. Southwest wind 13 to 15 mph, with gusts as high as 22 mph.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 55. West southwest wind 6 to 8 mph becoming north northwest after midnight.
Saturday
A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 75. North wind 6 to 9 mph.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 54. North northeast wind around 6 mph.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 73. Northeast wind 7 to 9 mph.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 55. East wind 6 to 8 mph.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 73. South southwest wind 9 to 11 mph, with gusts as high as 18 mph.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Dahlgren IL
38.19°N 88.7°W
38.19°N 88.7°W
1:51 pm CDT Apr 20, 2026
6pm CDT Apr 20, 2026-6pm CDT Apr 27, 2026
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