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.

Fog/Mist

32°F

0°C

Humidity 96%
Wind Speed Calm
Barometer 29.90 in
Dewpoint 31°F (-1°C)
Visibility 5.00 mi
Last update 27 Feb 1:15 am CST
Extended Forecast for

Illinois Valley Rgnl-Walter A Duncan Field Airport IL

  • Overnight

    Overnight: Mostly clear, with a low around 29. Southwest wind around 5 mph.

    Low: 29 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 66. Breezy, with a southwest wind 5 to 15 mph increasing to 15 to 25 mph in the afternoon. Winds could gust as high as 40 mph.

    High: 66 °F

    Sunny then
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 29. West wind 5 to 15 mph becoming north after midnight. Winds could gust as high as 25 mph.

    Low: 29 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of snow after noon. Mostly cloudy, with a high near 41. Northeast wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 41 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 20. North northeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 20 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 36.

    High: 36 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Snow likely. Mostly cloudy, with a low around 21. Chance of precipitation is 60%.

    Low: 21 °F

    Snow Likely

  • Monday

    Monday: Mostly cloudy, with a high near 39.

    High: 39 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A chance of rain after midnight. Mostly cloudy, with a low around 28.

    Low: 28 °F

    Mostly Cloudy
    then Chance
    Rain

Detailed Forecast

Overnight
Mostly clear, with a low around 29. Southwest wind around 5 mph.
Friday
Sunny, with a high near 66. Breezy, with a southwest wind 5 to 15 mph increasing to 15 to 25 mph in the afternoon. Winds could gust as high as 40 mph.
Friday Night
Mostly clear, with a low around 29. West wind 5 to 15 mph becoming north after midnight. Winds could gust as high as 25 mph.
Saturday
A 20 percent chance of snow after noon. Mostly cloudy, with a high near 41. Northeast wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday Night
Mostly cloudy, with a low around 20. North northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday
Mostly cloudy, with a high near 36.
Sunday Night
Snow likely. Mostly cloudy, with a low around 21. Chance of precipitation is 60%.
Monday
Mostly cloudy, with a high near 39.
Monday Night
A chance of rain after midnight. Mostly cloudy, with a low around 28.
Tuesday
A chance of rain. Cloudy, with a high near 42.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 31.
Wednesday
A chance of rain. Mostly cloudy, with a high near 50.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 40.
Thursday
Rain likely. Partly sunny, with a high near 58.
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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:
12:21 am CST Feb 27, 2026
Forecast Valid:
1am CST Feb 27, 2026-6pm CST Mar 5, 2026
 
Forecast Discussion
 
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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