National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Overcast

57°F

14°C

Humidity 60%
Wind Speed N 6 mph
Barometer 30.05 in (1018.0 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 28 Feb 8:56 pm CST
Extended Forecast for

2 Miles W Nason IL

  • Tonight

    Tonight: Isolated showers before 10pm. Partly cloudy, with a low around 33. Light and variable wind becoming north 6 to 11 mph in the evening. Winds could gust as high as 18 mph. Chance of precipitation is 20%.

    Low: 33 °F

    Isolated
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 47. Northeast wind 9 to 11 mph, with gusts as high as 18 mph.

    High: 47 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Rain showers and snow showers likely, possibly mixed with sleet before 3am, then rain likely, possibly mixed with snow showers. Cloudy, with a low around 35. East northeast wind 7 to 9 mph. Chance of precipitation is 70%. Little or no snow and sleet accumulation expected.

    Low: 35 °F

    Chance Wintry
    Mix then
    Wintry Mix
    Likely

  • Monday

    Monday: Showers likely, mainly before noon. Cloudy, with a high near 46. East wind 6 to 9 mph. Chance of precipitation is 60%.

    High: 46 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Monday Night

    Monday Night: Showers likely, mainly after midnight. Cloudy, with a low around 42. East wind 5 to 9 mph becoming south after midnight. Chance of precipitation is 60%.

    Low: 42 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Showers likely, mainly before noon. Cloudy, with a high near 67. South southwest wind 9 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.

    High: 67 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely. Cloudy, with a low around 56. South wind 6 to 8 mph. Chance of precipitation is 70%.

    Low: 56 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm. Cloudy, with a high near 69. South southwest wind 8 to 11 mph, with gusts as high as 18 mph.

    High: 69 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 56. South southwest wind around 8 mph.

    Low: 56 °F

    Showers
    Likely

Detailed Forecast

Tonight
Isolated showers before 10pm. Partly cloudy, with a low around 33. Light and variable wind becoming north 6 to 11 mph in the evening. Winds could gust as high as 18 mph. Chance of precipitation is 20%.
Sunday
Partly sunny, with a high near 47. Northeast wind 9 to 11 mph, with gusts as high as 18 mph.
Sunday Night
Rain showers and snow showers likely, possibly mixed with sleet before 3am, then rain likely, possibly mixed with snow showers. Cloudy, with a low around 35. East northeast wind 7 to 9 mph. Chance of precipitation is 70%. Little or no snow and sleet accumulation expected.
Monday
Showers likely, mainly before noon. Cloudy, with a high near 46. East wind 6 to 9 mph. Chance of precipitation is 60%.
Monday Night
Showers likely, mainly after midnight. Cloudy, with a low around 42. East wind 5 to 9 mph becoming south after midnight. Chance of precipitation is 60%.
Tuesday
Showers likely, mainly before noon. Cloudy, with a high near 67. South southwest wind 9 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.
Tuesday Night
Showers likely. Cloudy, with a low around 56. South wind 6 to 8 mph. Chance of precipitation is 70%.
Wednesday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 69. South southwest wind 8 to 11 mph, with gusts as high as 18 mph.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 56. South southwest wind around 8 mph.
Thursday
Showers likely. Mostly cloudy, with a high near 71. South southwest wind 8 to 11 mph, with gusts as high as 18 mph.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. South wind around 7 mph.
Friday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 74. South southwest wind 7 to 13 mph, with gusts as high as 20 mph.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 57. South southwest wind 7 to 10 mph, with gusts as high as 20 mph.
Saturday
Showers likely. Cloudy, with a high near 66. Southwest wind 8 to 11 mph, with gusts as high as 20 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles W Nason IL
 38.18°N 89.01°W
Last Update:
8:46 pm CST Feb 28, 2026
Forecast Valid:
9pm CST Feb 28, 2026-6pm CST Mar 7, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation