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

45°F

7°C

Humidity 57%
Wind Speed SW 7 mph
Barometer 29.97 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 15 Feb 9:21 pm CST
Extended Forecast for

Illinois Valley Rgnl-Walter A Duncan Field Airport IL

  • Tonight

    Tonight: Patchy fog after midnight. Otherwise, partly cloudy, with a low around 33. South southwest wind around 5 mph.

    Low: 33 °F

    Mostly Clear
    then Patchy
    Fog

  • Washington's Birthday

    Washington's Birthday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 66. Breezy, with a southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 66 °F

    Patchy Fog
    then Mostly
    Sunny and
    Breezy

  • Monday Night

    Monday Night: Increasing clouds, with a low around 41. South wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 41 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 61. Southeast wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 61 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A chance of showers, with thunderstorms also possible after 3am. Mostly cloudy, with a low around 53. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.

    Low: 53 °F

    Breezy.
    Slight Chance
    Showers then
    Chance
    Showers

  • Wednesday

    Wednesday: Sunny, with a high near 66. Breezy.

    High: 66 °F

    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of rain after noon. Partly sunny, with a high near 62.

    High: 62 °F

    Partly Sunny
    then Chance
    Rain

  • Thursday Night

    Thursday Night: A chance of rain. Partly cloudy, with a low around 34.

    Low: 34 °F

    Chance Rain

Detailed Forecast

Tonight
Patchy fog after midnight. Otherwise, partly cloudy, with a low around 33. South southwest wind around 5 mph.
Washington's Birthday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 66. Breezy, with a southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Monday Night
Increasing clouds, with a low around 41. South wind 5 to 10 mph, with gusts as high as 15 mph.
Tuesday
Mostly cloudy, with a high near 61. Southeast wind 5 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
A chance of showers, with thunderstorms also possible after 3am. Mostly cloudy, with a low around 53. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.
Wednesday
Sunny, with a high near 66. Breezy.
Wednesday Night
Partly cloudy, with a low around 37.
Thursday
A chance of rain after noon. Partly sunny, with a high near 62.
Thursday Night
A chance of rain. Partly cloudy, with a low around 34.
Friday
Mostly sunny, with a high near 46.
Friday Night
Partly cloudy, with a low around 26.
Saturday
Mostly sunny, with a high near 42.
Saturday Night
Partly cloudy, with a low around 23.
Sunday
Mostly sunny, with a high near 38.
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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:
9:21 pm CST Feb 15, 2026
Forecast Valid:
9pm CST Feb 15, 2026-6pm CST Feb 22, 2026
 
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Additional Resources

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