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

36°F

2°C

Humidity 93%
Wind Speed Calm
Barometer 30.00 in (1016.3 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 17 Feb 3:56 am CST
Extended Forecast for

2 Miles W Nason IL

  • Today

    Today: Patchy fog between 8am and 10am. Otherwise, mostly cloudy, with a high near 64. South wind 7 to 16 mph, with gusts as high as 28 mph.

    High: 64 °F

    Patchy Fog
    then Cloudy

  • Tonight

    Tonight: A 20 percent chance of rain after 5am. Mostly cloudy, with a low around 56. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 33 mph.

    Low: 56 °F

    Breezy.
    Cloudy then
    Slight Chance
    Rain

  • Wednesday

    Wednesday: Mostly sunny, with a high near 72. Southwest wind 6 to 15 mph, with gusts as high as 28 mph.

    High: 72 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers after midnight. Partly cloudy, with a low around 53. South wind around 6 mph.

    Low: 53 °F

    Partly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 69. South southwest wind 6 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.

    High: 69 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 39. West wind around 10 mph, with gusts as high as 20 mph.

    Low: 39 °F

    Chance
    T-storms then
    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 53. West wind 7 to 13 mph, with gusts as high as 20 mph.

    High: 53 °F

    Sunny

  • Friday Night

    Friday Night: A slight chance of showers after midnight. Partly cloudy, with a low around 32. Northwest wind 3 to 6 mph.

    Low: 32 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: A slight chance of rain and snow showers before noon, then a chance of rain showers. Mostly sunny, with a high near 47. North wind 6 to 9 mph.

    High: 47 °F

    Slight Chance
    Rain/Snow
    then Chance
    Showers

Detailed Forecast

Today
Patchy fog between 8am and 10am. Otherwise, mostly cloudy, with a high near 64. South wind 7 to 16 mph, with gusts as high as 28 mph.
Tonight
A 20 percent chance of rain after 5am. Mostly cloudy, with a low around 56. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 33 mph.
Wednesday
Mostly sunny, with a high near 72. Southwest wind 6 to 15 mph, with gusts as high as 28 mph.
Wednesday Night
A 30 percent chance of showers after midnight. Partly cloudy, with a low around 53. South wind around 6 mph.
Thursday
A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 69. South southwest wind 6 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.
Thursday Night
A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 39. West wind around 10 mph, with gusts as high as 20 mph.
Friday
Sunny, with a high near 53. West wind 7 to 13 mph, with gusts as high as 20 mph.
Friday Night
A slight chance of showers after midnight. Partly cloudy, with a low around 32. Northwest wind 3 to 6 mph.
Saturday
A slight chance of rain and snow showers before noon, then a chance of rain showers. Mostly sunny, with a high near 47. North wind 6 to 9 mph.
Saturday Night
A slight chance of snow showers before midnight. Mostly clear, with a low around 26. Northwest wind 7 to 9 mph.
Sunday
Sunny, with a high near 40. Northwest wind 8 to 13 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 20. North northwest wind around 7 mph.
Monday
Sunny, with a high near 39. North northwest wind 5 to 8 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:
3:16 am CST Feb 17, 2026
Forecast Valid:
4am CST Feb 17, 2026-6pm CST Feb 23, 2026
 
Forecast Discussion
 
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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