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.

Fair

40°F

4°C

Humidity 89%
Wind Speed Calm
Barometer 30.21 in (1023.6 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 18 Apr 10:56 pm CDT
Extended Forecast for

2 Miles W Nason IL

  • Tonight

    Tonight: Clear, with a low around 38. Light and variable wind.

    Low: 38 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 67. Light west southwest wind becoming west 6 to 11 mph in the morning. Winds could gust as high as 20 mph.

    High: 67 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 41. West northwest wind around 6 mph becoming calm in the evening.

    Low: 41 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 67. Calm wind becoming east around 5 mph.

    High: 67 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 49. Southeast wind 3 to 6 mph.

    Low: 49 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 77. Southwest wind 7 to 14 mph, with gusts as high as 21 mph.

    High: 77 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 55. Southwest wind 7 to 10 mph, with gusts as high as 18 mph.

    Low: 55 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 79. Southwest wind 6 to 9 mph.

    High: 79 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 60. South wind around 6 mph.

    Low: 60 °F

    Mostly Clear

Detailed Forecast

Tonight
Clear, with a low around 38. Light and variable wind.
Sunday
Sunny, with a high near 67. Light west southwest wind becoming west 6 to 11 mph in the morning. Winds could gust as high as 20 mph.
Sunday Night
Mostly clear, with a low around 41. West northwest wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 67. Calm wind becoming east around 5 mph.
Monday Night
Mostly clear, with a low around 49. Southeast wind 3 to 6 mph.
Tuesday
Mostly sunny, with a high near 77. Southwest wind 7 to 14 mph, with gusts as high as 21 mph.
Tuesday Night
Mostly clear, with a low around 55. Southwest wind 7 to 10 mph, with gusts as high as 18 mph.
Wednesday
Sunny, with a high near 79. Southwest wind 6 to 9 mph.
Wednesday Night
Mostly clear, with a low around 60. South wind around 6 mph.
Thursday
Sunny, with a high near 83. South wind 7 to 14 mph, with gusts as high as 22 mph.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 63. South wind around 11 mph, with gusts as high as 21 mph.
Friday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 78. South 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 51. West southwest wind 9 to 11 mph becoming northwest after midnight.
Saturday
A slight chance of showers. Mostly sunny, with a high near 71. North northwest wind around 10 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles W Nason IL
 38.18°N 89.01°W
Last Update:
10:56 pm CDT Apr 18, 2026
Forecast Valid:
11pm CDT Apr 18, 2026-6pm CDT Apr 25, 2026
 
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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