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.

A Few Clouds

55°F

13°C

Humidity 80%
Wind Speed S 15 mph
Barometer 29.82 in (1010.3 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 17 Feb 6:56 pm CST
Extended Forecast for

2 Miles W Nason IL

  • Tonight

    Tonight: A slight chance of showers between 1am and 4am. Cloudy, with a temperature rising to around 59 by 5am. Breezy, with a south wind 16 to 20 mph, with gusts as high as 34 mph. Chance of precipitation is 20%.

    Low: 55 °F⇑

    Cloudy then
    Slight Chance
    Showers and
    Breezy

  • Wednesday

    Wednesday: Mostly cloudy through mid morning, then gradual clearing, with a high near 72. Southwest wind 8 to 14 mph, with gusts as high as 29 mph.

    High: 72 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers after midnight. Partly cloudy, with a low around 54. South wind around 6 mph.

    Low: 54 °F

    Partly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: Showers likely, mainly after noon. Partly sunny, with a high near 68. South southwest wind 6 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.

    High: 68 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A 20 percent chance of showers before midnight. Mostly clear, with a low around 41. South southwest wind around 11 mph becoming west after midnight. Winds could gust as high as 21 mph.

    Low: 41 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 52. West wind 5 to 13 mph, with gusts as high as 21 mph.

    High: 52 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 33. Light and variable wind becoming north around 5 mph after midnight.

    Low: 33 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of rain showers before noon, then a chance of rain and snow showers. Mostly sunny, with a high near 45. North wind 5 to 9 mph.

    High: 45 °F

    Slight Chance
    Showers then
    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: A chance of rain and snow showers before midnight, then a slight chance of snow showers. Partly cloudy, with a low around 27. North northwest wind 8 to 10 mph, with gusts as high as 21 mph.

    Low: 27 °F

    Chance
    Rain/Snow
    then Slight
    Chance Snow
    Showers

Detailed Forecast

Tonight
A slight chance of showers between 1am and 4am. Cloudy, with a temperature rising to around 59 by 5am. Breezy, with a south wind 16 to 20 mph, with gusts as high as 34 mph. Chance of precipitation is 20%.
Wednesday
Mostly cloudy through mid morning, then gradual clearing, with a high near 72. Southwest wind 8 to 14 mph, with gusts as high as 29 mph.
Wednesday Night
A 30 percent chance of showers after midnight. Partly cloudy, with a low around 54. South wind around 6 mph.
Thursday
Showers likely, mainly after noon. Partly sunny, with a high near 68. South southwest wind 6 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Thursday Night
A 20 percent chance of showers before midnight. Mostly clear, with a low around 41. South southwest wind around 11 mph becoming west after midnight. Winds could gust as high as 21 mph.
Friday
Sunny, with a high near 52. West wind 5 to 13 mph, with gusts as high as 21 mph.
Friday Night
Partly cloudy, with a low around 33. Light and variable wind becoming north around 5 mph after midnight.
Saturday
A slight chance of rain showers before noon, then a chance of rain and snow showers. Mostly sunny, with a high near 45. North wind 5 to 9 mph.
Saturday Night
A chance of rain and snow showers before midnight, then a slight chance of snow showers. Partly cloudy, with a low around 27. North northwest wind 8 to 10 mph, with gusts as high as 21 mph.
Sunday
A slight chance of snow showers before noon. Mostly sunny, with a high near 39. Northwest wind 10 to 15 mph, with gusts as high as 23 mph.
Sunday Night
Mostly clear, with a low around 20. North northwest wind 6 to 9 mph, with gusts as high as 18 mph.
Monday
Sunny, with a high near 38. North northwest wind 3 to 8 mph.
Monday Night
Partly cloudy, with a low around 20. Calm wind.
Tuesday
Mostly sunny, with a high near 46. Light south southeast wind becoming south 5 to 10 mph in the morning.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles W Nason IL
 38.18°N 89.01°W
Last Update:
5:46 pm CST Feb 17, 2026
Forecast Valid:
7pm CST Feb 17, 2026-6pm CST Feb 24, 2026
 
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Additional Resources

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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