Hazardous Weather Conditions
Current conditions at
Mount Vernon Airport (KMVN)
Lat: 38.33°NLon: 88.85°WElev: 466ft.
Fair
31°F
-1°C
| Humidity | 35% |
| Wind Speed | S 15 mph |
| Barometer | 30.39 in (1030.3 mb) |
| Dewpoint | 6°F (-14°C) |
| Visibility | 10.00 mi |
| Wind Chill | 20°F (-7°C) |
| Last update | 20 Jan 1:56 pm CST |
Extended Forecast for
9 Miles WSW Johnsonville IL
This Afternoon
High: 32 °F
Mostly Sunny
Tonight
Low: 25 °F⇑
Increasing
CloudsWednesday
High: 45 °F
Gradual
ClearingWednesday Night
Low: 23 °F
Mostly Clear
Thursday
High: 37 °F
Partly Sunny
Thursday Night
Low: 13 °F
Mostly Cloudy
Friday
High: 17 °F
Mostly Cloudy
Friday Night
Low: 4 °F
Mostly Cloudy
then Slight
Chance SnowSaturday
High: 15 °F
Chance Snow
Detailed Forecast
This Afternoon
Mostly sunny, with a high near 32. South wind 7 to 10 mph.
Tonight
Increasing clouds, with a temperature falling to near 25 by 8pm, then rising to around 31 during the remainder of the night. South wind 6 to 11 mph, with gusts as high as 24 mph.
Wednesday
Cloudy through mid morning, then gradual clearing, with a high near 45. West wind 6 to 14 mph, with gusts as high as 23 mph.
Wednesday Night
Mostly clear, with a low around 23. West southwest wind around 6 mph becoming northwest after midnight.
Thursday
Partly sunny, with a high near 37. Northwest wind 3 to 5 mph.
Thursday Night
Mostly cloudy, with a low around 13. Calm wind becoming north 5 to 9 mph after midnight. Winds could gust as high as 18 mph.
Friday
Mostly cloudy, with a high near 17. North wind around 11 mph, with gusts as high as 20 mph.
Friday Night
A slight chance of snow after midnight. Mostly cloudy, with a low around 4. North northeast wind around 10 mph, with gusts as high as 20 mph.
Saturday
A chance of snow. Cloudy, with a high near 15. Northeast wind 8 to 10 mph, with gusts as high as 20 mph.
Saturday Night
A chance of snow, mainly before midnight. Mostly cloudy, with a low around 10. North northeast wind around 7 mph.
Sunday
Partly sunny, with a high near 22. North wind around 6 mph.
Sunday Night
Partly cloudy, with a low around 7. Calm wind becoming northwest around 5 mph after midnight.
Monday
Mostly sunny, with a high near 23. West northwest wind 5 to 7 mph.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
9 Miles WSW Johnsonville IL
38.48°N 88.68°W
38.48°N 88.68°W
1:46 pm CST Jan 20, 2026
2pm CST Jan 20, 2026-6pm CST Jan 26, 2026
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