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

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Fair

52°F

11°C

Humidity 58%
Wind Speed Calm
Barometer 30.15 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 14 May 8:01 am CDT
Extended Forecast for

Illinois Valley Rgnl-Walter A Duncan Field Airport IL

  • Today

    Today: Sunny, with a high near 72. Calm wind becoming south around 5 mph in the afternoon.

    High: 72 °F

    Sunny

  • Tonight

    Tonight: A 30 percent chance of showers, mainly after 3am. Increasing clouds, with a low around 52. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 52 °F

    Mostly Clear
    then Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 78. South wind around 15 mph, with gusts as high as 30 mph.

    High: 78 °F

    Chance
    Showers then
    Sunny

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 60. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 60 °F

    Partly Cloudy
    then Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 83. South southwest wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 70%.

    High: 83 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.

    Low: 60 °F

    Showers
    Likely

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.

    High: 85 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy

  • Monday

    Monday: A chance of showers and thunderstorms. Mostly sunny, with a high near 86. Breezy.

    High: 86 °F

    Chance
    T-storms and
    Breezy

Detailed Forecast

Today
Sunny, with a high near 72. Calm wind becoming south around 5 mph in the afternoon.
Tonight
A 30 percent chance of showers, mainly after 3am. Increasing clouds, with a low around 52. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Friday
A 30 percent chance of showers, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 78. South wind around 15 mph, with gusts as high as 30 mph.
Friday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 60. South wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 83. South southwest wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 70%.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.
Sunday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.
Sunday Night
Partly cloudy, with a low around 66.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 86. Breezy.
Monday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 65. Breezy.
Tuesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 78. Breezy.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 56.
Wednesday
A chance of showers. Partly sunny, with a high near 73.
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ABOUT THIS FORECAST

 
Point Forecast:
Illinois Valley Rgnl-Walter A Duncan Field Airport IL
 41.34°N 89.14°W
Last Update:
3:26 am CDT May 14, 2026
Forecast Valid:
8am CDT May 14, 2026-6pm CDT May 20, 2026
 
Forecast Discussion
 
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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