National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Fair

N/A

Humidity NA
Wind Speed SE 8 mph
Barometer 29.89 in
Dewpoint N/A
Visibility 10.00 mi
Last update 3 Sep 6:35 pm CDT
Extended Forecast for

4 Miles W Grand Ridge IL

Heat Advisory September 3, 06:49pm until September 4, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 3, 06:49pm until September 4, 07:00pm

    NOW until 7:00pm Fri

    Heat Advisory

  • Tonight

    Low: 74 °F

    Isolated
    T-storms then
    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 94. Heat index values as high as 103. South southeast wind around 5 mph becoming west southwest in the afternoon. Winds could gust as high as 15 mph.

    High: 94 °F

    Sunny

  • Friday Night

    Friday Night: A chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Mostly clear, with a low around 73. West southwest wind around 5 mph becoming calm. Chance of precipitation is 40%.

    Low: 73 °F

    Mostly Clear
    then Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 91. Heat index values as high as 99. Calm wind becoming north northeast around 5 mph in the afternoon. Winds could gust as high as 15 mph.

    High: 91 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 67. East northeast wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 67 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Labor Day

    Labor Day: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

Detailed Forecast

Tonight
Isolated showers and thunderstorms before 9pm. Mostly clear, with a low around 74. South southeast wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 20%.
Friday
Sunny, with a high near 94. Heat index values as high as 103. South southeast wind around 5 mph becoming west southwest in the afternoon. Winds could gust as high as 15 mph.
Friday Night
A chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Mostly clear, with a low around 73. West southwest wind around 5 mph becoming calm. Chance of precipitation is 40%.
Saturday
Sunny, with a high near 91. Heat index values as high as 99. Calm wind becoming north northeast around 5 mph in the afternoon. Winds could gust as high as 15 mph.
Saturday Night
Mostly clear, with a low around 67. East northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Sunday
Mostly sunny, with a high near 85.
Sunday Night
Mostly clear, with a low around 63.
Labor Day
Mostly sunny, with a high near 84.
Monday Night
Partly cloudy, with a low around 65.
Tuesday
Mostly sunny, with a high near 90.
Tuesday Night
Partly cloudy, with a low around 73.
Wednesday
Mostly sunny, with a high near 92.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 71.
Thursday
Mostly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles W Grand Ridge IL
 41.23°N 88.92°W
Last Update:
5:51 pm CDT Sep 3, 2026
Forecast Valid:
6pm CDT Sep 3, 2026-6pm CDT Sep 10, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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