Hazardous Weather Conditions
Current conditions at
Mount Vernon Airport (KMVN)
Lat: 38.33°NLon: 88.85°WElev: 466ft.
Light Rain
72°F
22°C
| Humidity | 97% |
| Wind Speed | S 12 mph |
| Barometer | 30.14 in (1020.5 mb) |
| Dewpoint | 71°F (22°C) |
| Visibility | 8.00 mi |
| Last update | 6 Aug 9:56 am CDT |
Extended Forecast for
Nason IL
Today
High: 82 °F
Showers
Likely then
Chance
T-stormsTonight
Low: 71 °F
Chance
T-stormsFriday
High: 90 °F
Chance
Showers then
Chance
T-stormsFriday Night
Low: 71 °F
Chance
T-storms then
Showers
LikelySaturday
High: 91 °F
Mostly Sunny
Saturday Night
Low: 72 °F
Mostly Clear
Sunday
High: 93 °F
Sunny
Sunday Night
Low: 74 °F
Mostly Clear
Monday
High: 94 °F
Sunny
Detailed Forecast
Today
Showers and thunderstorms likely, mainly before 3pm. Mostly cloudy, with a high near 82. Light and variable wind. Chance of precipitation is 70%.
Tonight
A 40 percent chance of showers and thunderstorms, mainly after 1am. Increasing clouds, with a low around 71. Calm wind.
Friday
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 90. Calm wind becoming southwest around 6 mph in the morning.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 71. Light southwest wind. Chance of precipitation is 60%.
Saturday
Mostly sunny, with a high near 91. Calm wind.
Saturday Night
Mostly clear, with a low around 72. Calm wind.
Sunday
Sunny, with a high near 93. Calm wind becoming south southwest around 6 mph in the morning.
Sunday Night
Mostly clear, with a low around 74. South southwest wind 5 to 7 mph.
Monday
Sunny, with a high near 94. South southwest wind 6 to 13 mph, with gusts as high as 18 mph.
Monday Night
Mostly clear, with a low around 76. South southwest wind 10 to 13 mph, with gusts as high as 20 mph.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 94. Southwest wind around 8 mph.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 73. South southwest wind 6 to 8 mph.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 89. South southwest wind 5 to 7 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Nason IL
38.18°N 88.98°W
38.18°N 88.98°W
9:46 am CDT Aug 6, 2026
10am CDT Aug 6, 2026-6pm CDT Aug 12, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
