Current conditions at
Mount Vernon Airport (KMVN)
Lat: 38.33°NLon: 88.85°WElev: 466ft.
Overcast
67°F
19°C
| Humidity | 91% |
| Wind Speed | S 9 mph |
| Barometer | 29.98 in (1015.6 mb) |
| Dewpoint | 64°F (18°C) |
| Visibility | 10.00 mi |
| Last update | 5 Mar 2:56 pm CST |
Extended Forecast for
9 Miles WSW Johnsonville IL
This Afternoon

High: 66 °F
Chance
ShowersTonight
Low: 58 °F
Chance
Showers then
Showers
LikelyFriday
High: 76 °F
Chance
Showers then
Partly SunnyFriday Night
Low: 63 °F
Mostly Cloudy
then Showers
LikelySaturday
High: 71 °F
Showers then
Chance
T-stormsSaturday Night

Low: 40 °F
Partly Cloudy
Sunday

High: 64 °F
Sunny
Sunday Night

Low: 48 °F
Mostly Clear
Monday

High: 74 °F
Sunny
Detailed Forecast
This Afternoon
A 30 percent chance of showers, mainly before 4pm. Mostly cloudy, with a steady temperature around 66. West wind 5 to 7 mph becoming calm.
Tonight
A chance of showers and thunderstorms, then showers likely after 3am. Mostly cloudy, with a low around 58. Calm wind becoming south southeast around 6 mph after midnight. Chance of precipitation is 60%.
Friday
A 30 percent chance of showers before 9am. Partly sunny, with a high near 76. South wind 6 to 16 mph, with gusts as high as 24 mph.
Friday Night
Showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 63. South wind 10 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 70%.
Saturday
Showers and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. High near 71. South southwest wind 8 to 14 mph becoming west northwest in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 90%.
Saturday Night
Partly cloudy, with a low around 40. West northwest wind 5 to 7 mph becoming calm after midnight.
Sunday
Sunny, with a high near 64. Calm wind becoming west southwest around 6 mph in the morning.
Sunday Night
Mostly clear, with a low around 48. South southwest wind 3 to 6 mph.
Monday
Sunny, with a high near 74. South southwest wind 6 to 13 mph, with gusts as high as 20 mph.
Monday Night
A slight chance of showers, then a chance of showers and thunderstorms after midnight. Partly cloudy, with a low around 60. South southwest wind around 8 mph, with gusts as high as 18 mph.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 76. South southwest wind 8 to 15 mph, with gusts as high as 24 mph.
Tuesday Night
Showers and possibly a thunderstorm. Mostly cloudy, with a low around 58. South southwest wind 11 to 15 mph, with gusts as high as 26 mph.
Wednesday
Showers. Mostly cloudy, with a high near 68. South southwest wind 11 to 15 mph becoming north northwest in the afternoon. Winds could gust as high as 26 mph.
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ABOUT 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 Mar 5, 2026
3pm CST Mar 5, 2026-6pm CDT Mar 11, 2026


