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

Hazardous Weather Conditions

Current conditions at

Olney-Noble Airport (KOLY)

Lat: 38.72°NLon: 88.18°WElev: 479ft.

Fair

78°F

26°C

Humidity 81%
Wind Speed Calm
Barometer 29.98 in
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 3 Sep 10:55 pm CDT
Extended Forecast for

Dundas IL

Extreme Heat Warning September 3, 11:09pm until September 5, 07:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning September 3, 11:09pm until September 5, 07:00pm

    NOW until 7:00pm Sat

    Extreme Heat Warning

  • Tonight

    Low: 76 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 100. Heat index values as high as 107. Calm wind becoming west around 6 mph in the morning.

    High: 100 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 75. Calm wind.

    Low: 75 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 98. Heat index values as high as 105. Calm wind becoming northwest 5 to 7 mph in the afternoon.

    High: 98 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 70. Northeast wind 3 to 6 mph.

    Low: 70 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 91. Northeast wind 7 to 13 mph, with gusts as high as 17 mph.

    High: 91 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 63. East northeast wind 6 to 13 mph, with gusts as high as 18 mph.

    Low: 63 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 90.

    High: 90 °F

    Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 76. Light south wind.
Friday
Sunny and hot, with a high near 100. Heat index values as high as 107. Calm wind becoming west around 6 mph in the morning.
Friday Night
Mostly clear, with a low around 75. Calm wind.
Saturday
Sunny and hot, with a high near 98. Heat index values as high as 105. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 70. Northeast wind 3 to 6 mph.
Sunday
Sunny, with a high near 91. Northeast wind 7 to 13 mph, with gusts as high as 17 mph.
Sunday Night
Mostly clear, with a low around 63. East northeast wind 6 to 13 mph, with gusts as high as 18 mph.
Labor Day
Sunny, with a high near 90.
Monday Night
Mostly clear, with a low around 65.
Tuesday
Sunny and hot, with a high near 96.
Tuesday Night
Mostly clear, with a low around 73.
Wednesday
Sunny and hot, with a high near 99.
Wednesday Night
Mostly clear, with a low around 74.
Thursday
Mostly sunny and hot, with a high near 95.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Dundas IL
 38.84°N 88.09°W (Elev. 466 ft)
Last Update:
10:36 pm CDT Sep 3, 2026
Forecast Valid:
11pm 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