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

45°F

7°C

Humidity 52%
Wind Speed N 8 mph
Barometer 30.43 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 23 Mar 11:56 am CDT
Extended Forecast for

2 Miles W Nason IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 55. North northeast wind around 10 mph, with gusts as high as 18 mph.

    High: 55 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 36. East northeast wind around 6 mph.

    Low: 36 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 62. East southeast wind around 6 mph.

    High: 62 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 43. East southeast wind around 5 mph becoming calm in the evening.

    Low: 43 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 73. Light south southeast wind becoming south southwest 5 to 10 mph in the morning.

    High: 73 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 61. South wind 7 to 10 mph, with gusts as high as 20 mph.

    Low: 61 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 85. South southwest wind 10 to 15 mph, with gusts as high as 23 mph.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 43. South southwest wind around 14 mph becoming north after midnight. Winds could gust as high as 24 mph.

    Low: 43 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers. Mostly cloudy, with a high near 52. North wind around 14 mph, with gusts as high as 24 mph.

    High: 52 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 55. North northeast wind around 10 mph, with gusts as high as 18 mph.
Tonight
Mostly cloudy, with a low around 36. East northeast wind around 6 mph.
Tuesday
Mostly sunny, with a high near 62. East southeast wind around 6 mph.
Tuesday Night
Mostly cloudy, with a low around 43. East southeast wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 73. Light south southeast wind becoming south southwest 5 to 10 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 61. South wind 7 to 10 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 85. South southwest wind 10 to 15 mph, with gusts as high as 23 mph.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 43. South southwest wind around 14 mph becoming north after midnight. Winds could gust as high as 24 mph.
Friday
A chance of showers. Mostly cloudy, with a high near 52. North wind around 14 mph, with gusts as high as 24 mph.
Friday Night
Partly cloudy, with a low around 32. North wind 6 to 11 mph, with gusts as high as 18 mph.
Saturday
Sunny, with a high near 56. Northeast wind 5 to 7 mph.
Saturday Night
Partly cloudy, with a low around 37. Light southeast wind.
Sunday
Mostly sunny, with a high near 64. South wind 3 to 7 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:
11:51 am CDT Mar 23, 2026
Forecast Valid:
12pm CDT Mar 23, 2026-6pm CDT Mar 29, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation