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

77°F

25°C

Humidity 90%
Wind Speed E 6 mph
Barometer 30.08 in
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 15 Aug 1:10 am CDT
Extended Forecast for

Olney IL

Heat Advisory August 15, 01:26am until August 16, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 15, 01:26am until August 16, 08:00pm

    NOW until 8:00pm Sun

    Heat Advisory

  • Overnight

    Low: 74 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny and hot, with a high near 95. Heat index values as high as 110. Light and variable wind becoming southwest 5 to 7 mph in the morning.

    High: 95 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 75. South southwest wind 3 to 6 mph.

    Low: 75 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 94. Heat index values as high as 107. West wind 6 to 9 mph, with gusts as high as 15 mph.

    High: 94 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A chance of showers before 10pm, then a chance of showers and thunderstorms between 10pm and 1am, then a chance of showers after 1am. Partly cloudy, with a low around 72. West northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.

    Low: 72 °F

    Chance
    T-storms

  • Monday

    Monday: Mostly sunny, with a high near 86. North northwest wind 3 to 7 mph.

    High: 86 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 66. North wind around 5 mph becoming calm in the evening.

    Low: 66 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

Detailed Forecast

Overnight
Partly cloudy, with a low around 74. Light southeast wind.
Saturday
Mostly sunny and hot, with a high near 95. Heat index values as high as 110. Light and variable wind becoming southwest 5 to 7 mph in the morning.
Saturday Night
Mostly clear, with a low around 75. South southwest wind 3 to 6 mph.
Sunday
Mostly sunny, with a high near 94. Heat index values as high as 107. West wind 6 to 9 mph, with gusts as high as 15 mph.
Sunday Night
A chance of showers before 10pm, then a chance of showers and thunderstorms between 10pm and 1am, then a chance of showers after 1am. Partly cloudy, with a low around 72. West northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.
Monday
Mostly sunny, with a high near 86. North northwest wind 3 to 7 mph.
Monday Night
Partly cloudy, with a low around 66. North wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 87.
Tuesday Night
Mostly clear, with a low around 69.
Wednesday
Mostly sunny, with a high near 91.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 69.
Thursday
Mostly sunny, with a high near 85.
Thursday Night
Partly cloudy, with a low around 65.
Friday
Mostly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Olney IL
 38.73°N 88.09°W (Elev. 446 ft)
Last Update:
1:11 am CDT Aug 15, 2026
Forecast Valid:
1am CDT Aug 15, 2026-6pm CDT Aug 21, 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