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.

Partly Cloudy

84°F

29°C

Humidity 51%
Wind Speed NE 10 G 17 mph
Barometer 30.08 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 6 Sep 1:20 pm CDT
Extended Forecast for

Illinois Valley Rgnl-Walter A Duncan Field Airport IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 82. East northeast wind around 10 mph.

    High: 82 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 59. East wind around 5 mph, with gusts as high as 10 mph.

    Low: 59 °F

    Partly Cloudy

  • Labor Day

    Labor Day: Mostly sunny, with a high near 81. East southeast wind 5 to 10 mph.

    High: 81 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 61. East wind around 5 mph, with gusts as high as 15 mph.

    Low: 61 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 87. South wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 87 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 72. Chance of precipitation is 40%.

    Low: 72 °F

    Partly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm before 10am, then showers likely between 10am and 1pm. Mostly cloudy, with a high near 86. Chance of precipitation is 60%.

    High: 86 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 82. East northeast wind around 10 mph.
Tonight
Partly cloudy, with a low around 59. East wind around 5 mph, with gusts as high as 10 mph.
Labor Day
Mostly sunny, with a high near 81. East southeast wind 5 to 10 mph.
Monday Night
Partly cloudy, with a low around 61. East wind around 5 mph, with gusts as high as 15 mph.
Tuesday
Mostly sunny, with a high near 87. South wind 5 to 10 mph, with gusts as high as 15 mph.
Tuesday Night
A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 72. Chance of precipitation is 40%.
Wednesday
Showers likely and possibly a thunderstorm before 10am, then showers likely between 10am and 1pm. Mostly cloudy, with a high near 86. Chance of precipitation is 60%.
Wednesday Night
Partly cloudy, with a low around 62.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
Mostly clear, with a low around 57.
Friday
Sunny, with a high near 82.
Friday Night
A chance of showers. Mostly clear, with a low around 62.
Saturday
Mostly sunny, with a high near 85.
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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:
1:21 pm CDT Sep 6, 2026
Forecast Valid:
1pm CDT Sep 6, 2026-6pm CDT Sep 12, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation