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

88°F

31°C

Humidity 70%
Wind Speed Calm
Barometer 29.90 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index100°F (38°C)
Last update 4 Sep 7:19 pm CDT
Extended Forecast for

Oglesby IL

Heat Advisory September 4, 07:35pm until September 4, 10:00pm
Click here for hazard details and duration
...
  •  
    Heat Advisory September 4, 07:35pm until September 4, 10:00pm

    NOW until 10:00pm Fri

    Heat Advisory

  • Tonight

    Low: 75 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms and
    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, sunny, with a high near 91. Heat index values as high as 99. Light north wind becoming north northeast 5 to 10 mph in the morning.

    High: 91 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 66. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 66 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 84. East wind around 5 mph, with gusts as high as 15 mph.

    High: 84 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 61. East wind around 5 mph, with gusts as high as 15 mph.

    Low: 61 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 91.

    High: 91 °F

    Mostly Sunny

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms between 1am and 4am. Patchy fog after 4am. Otherwise, partly cloudy, with a low around 75. West southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Saturday
Patchy fog before 9am. Otherwise, sunny, with a high near 91. Heat index values as high as 99. Light north wind becoming north northeast 5 to 10 mph in the morning.
Saturday Night
Mostly clear, with a low around 66. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Sunday
Sunny, with a high near 84. East wind around 5 mph, with gusts as high as 15 mph.
Sunday Night
Mostly clear, with a low around 61. East wind around 5 mph, with gusts as high as 15 mph.
Labor Day
Sunny, with a high near 84.
Monday Night
Partly cloudy, with a low around 63.
Tuesday
Mostly sunny, with a high near 91.
Tuesday Night
Partly cloudy, with a low around 74.
Wednesday
Mostly sunny, with a high near 93.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 67.
Thursday
Mostly sunny, with a high near 84.
Thursday Night
Partly cloudy, with a low around 61.
Friday
Mostly sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Oglesby IL
 41.32°N 89.06°W
Last Update:
7:07 pm CDT Sep 4, 2026
Forecast Valid:
7pm CDT Sep 4, 2026-6pm CDT Sep 11, 2026
 
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Additional Resources

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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