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

Hazardous Weather Conditions

Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Overcast

57°F

14°C

Humidity 55%
Wind Speed E 18 G 22 mph
Barometer 30.17 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 21 May 9:20 pm CDT
Extended Forecast for

Illinois Valley Rgnl-Walter A Duncan Field Airport IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 52. East northeast wind 10 to 15 mph.

    Low: 52 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 70. East wind around 15 mph, with gusts as high as 25 mph.

    High: 70 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 20 percent chance of showers after 10pm. Mostly cloudy, with a low around 54. East northeast wind around 10 mph, with gusts as high as 15 mph.

    Low: 54 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 75. North northeast wind around 5 mph.

    High: 75 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 56. North northeast wind around 5 mph becoming east southeast after midnight. Chance of precipitation is 30%.

    Low: 56 °F

    Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers and thunderstorms. Partly sunny, with a high near 79. Chance of precipitation is 20%.

    High: 79 °F

    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Memorial Day

    Memorial Day: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 52. East northeast wind 10 to 15 mph.
Friday
Mostly cloudy, with a high near 70. East wind around 15 mph, with gusts as high as 25 mph.
Friday Night
A 20 percent chance of showers after 10pm. Mostly cloudy, with a low around 54. East northeast wind around 10 mph, with gusts as high as 15 mph.
Saturday
Partly sunny, with a high near 75. North northeast wind around 5 mph.
Saturday Night
A slight chance of showers between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 56. North northeast wind around 5 mph becoming east southeast after midnight. Chance of precipitation is 30%.
Sunday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 79. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 56.
Memorial Day
Mostly sunny, with a high near 83.
Monday Night
Partly cloudy, with a low around 59.
Tuesday
Mostly sunny, with a high near 85.
Tuesday Night
A chance of showers. Partly cloudy, with a low around 62.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 84.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 62.
Thursday
Mostly sunny, with a high near 86.
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Forecast Area
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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:
4:06 pm CDT May 21, 2026
Forecast Valid:
9pm CDT May 21, 2026-6pm CDT May 28, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation