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Hazardous Weather Conditions

Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Fair

72°F

22°C

Humidity 94%
Wind Speed SW 6 mph
Barometer 29.93 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 18 Aug 11:18 pm CDT
Extended Forecast for

Illinois Valley Rgnl-Walter A Duncan Field Airport IL

Flood Warning August 18, 11:38pm until August 19, 09:00am
Click here for hazard details and duration
Flood Warning
  •  
    Flood Warning August 18, 11:38pm until August 19, 09:00am

    NOW until 9:00am Wed

    Flood Warning

  • Tonight

    Low: 67 °F

    Chance
    Showers and
    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 8am. Otherwise, partly sunny, with a high near 79. Northwest wind around 5 mph becoming east northeast in the morning.

    High: 79 °F

    Patchy Fog
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 60. East northeast wind around 5 mph becoming calm in the evening.

    Low: 60 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 79. Calm wind becoming east around 5 mph.

    High: 79 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 62. Calm wind becoming south around 5 mph.

    Low: 62 °F

    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 64.

    Low: 64 °F

    Chance
    T-storms

  • Saturday

    Saturday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

Detailed Forecast

Tonight
A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 4am. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 67. West wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 50%.
Wednesday
Patchy fog before 8am. Otherwise, partly sunny, with a high near 79. Northwest wind around 5 mph becoming east northeast in the morning.
Wednesday Night
Partly cloudy, with a low around 60. East northeast wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 79. Calm wind becoming east around 5 mph.
Thursday Night
Mostly clear, with a low around 62. Calm wind becoming south around 5 mph.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 80.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 64.
Saturday
Sunny, with a high near 78.
Saturday Night
Mostly clear, with a low around 60.
Sunday
Mostly sunny, with a high near 76.
Sunday Night
Partly cloudy, with a low around 60.
Monday
Mostly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 63.
Tuesday
Mostly sunny, with a high near 80.
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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:
9:11 pm CDT Aug 18, 2026
Forecast Valid:
11pm CDT Aug 18, 2026-6pm CDT Aug 25, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

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Chance of Precipitation