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

40°F

4°C

Humidity 64%
Wind Speed W 13 mph
Barometer 29.96 in
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 28 Feb 12:15 am CST
Extended Forecast for

Illinois Valley Rgnl-Walter A Duncan Field Airport IL

  • Overnight

    Overnight: Increasing clouds, with a low around 30. North northwest wind 5 to 15 mph, with gusts as high as 30 mph.

    Low: 30 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly cloudy, with a high near 41. North wind 5 to 15 mph becoming east northeast in the afternoon. Winds could gust as high as 20 mph.

    High: 41 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 22. East northeast wind 10 to 15 mph becoming north after midnight. Winds could gust as high as 20 mph.

    Low: 22 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 36. North wind around 10 mph becoming east in the afternoon. Winds could gust as high as 15 mph.

    High: 36 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of snow. Mostly cloudy, with a low around 22. East wind around 10 mph.

    Low: 22 °F

    Slight Chance
    Snow

  • Monday

    Monday: Partly sunny, with a high near 43.

    High: 43 °F

    Partly Sunny

  • Monday Night

    Monday Night: Rain likely, mainly after midnight. Mostly cloudy, with a low around 34. Chance of precipitation is 70%.

    Low: 34 °F

    Chance Rain
    then Rain
    Likely

  • Tuesday

    Tuesday: Rain. Cloudy, with a high near 45.

    High: 45 °F

    Rain

  • Tuesday Night

    Tuesday Night: A chance of rain. Partly cloudy, with a low around 33.

    Low: 33 °F

    Chance Rain

Detailed Forecast

Overnight
Increasing clouds, with a low around 30. North northwest wind 5 to 15 mph, with gusts as high as 30 mph.
Saturday
Mostly cloudy, with a high near 41. North wind 5 to 15 mph becoming east northeast in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 22. East northeast wind 10 to 15 mph becoming north after midnight. Winds could gust as high as 20 mph.
Sunday
Partly sunny, with a high near 36. North wind around 10 mph becoming east in the afternoon. Winds could gust as high as 15 mph.
Sunday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 22. East wind around 10 mph.
Monday
Partly sunny, with a high near 43.
Monday Night
Rain likely, mainly after midnight. Mostly cloudy, with a low around 34. Chance of precipitation is 70%.
Tuesday
Rain. Cloudy, with a high near 45.
Tuesday Night
A chance of rain. Partly cloudy, with a low around 33.
Wednesday
A chance of rain. Mostly sunny, with a high near 54.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 41.
Thursday
A chance of rain. Mostly cloudy, with a high near 60.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 46.
Friday
Rain likely. Cloudy, with a high near 62.
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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 28, 2026
Forecast Valid:
12am CST Feb 28, 2026-6pm CST Mar 6, 2026
 
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Additional Resources

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Chance of Precipitation