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.

Mostly Cloudy

61°F

16°C

Humidity 72%
Wind Speed W 12 mph
Barometer 30.08 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 19 May 8:40 pm CDT
Extended Forecast for

Illinois Valley Rgnl-Walter A Duncan Field Airport IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 50. North wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 50 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 65. North northeast wind 10 to 15 mph.

    High: 65 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 43. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 43 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 68. East wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 68 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 48. East northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 48 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 65. Chance of precipitation is 60%.

    High: 65 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 1am, then a slight chance of showers. Mostly cloudy, with a low around 52. Chance of precipitation is 60%.

    Low: 52 °F

    Showers
    Likely

  • Saturday

    Saturday: Mostly cloudy, with a high near 74.

    High: 74 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 50. North wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 65. North northeast wind 10 to 15 mph.
Wednesday Night
Mostly clear, with a low around 43. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday
Partly sunny, with a high near 68. East wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 48. East northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Friday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 65. Chance of precipitation is 60%.
Friday Night
Showers likely and possibly a thunderstorm before 1am, then a slight chance of showers. Mostly cloudy, with a low around 52. Chance of precipitation is 60%.
Saturday
Mostly cloudy, with a high near 74.
Saturday Night
Mostly cloudy, with a low around 54.
Sunday
Partly sunny, with a high near 78.
Sunday Night
Partly cloudy, with a low around 56.
Memorial Day
Partly sunny, with a high near 80.
Monday Night
Mostly cloudy, with a low around 60.
Tuesday
Partly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Illinois Valley Rgnl-Walter A Duncan Field Airport IL
 41.34°N 89.14°W
Last Update:
8:31 pm CDT May 19, 2026
Forecast Valid:
8pm CDT May 19, 2026-6pm CDT May 26, 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