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

Hazardous Weather Conditions

Current conditions at

Aurora Municipal Airport (KARR)

Lat: 41.77°NLon: 88.48°WElev: 696ft.

Fog/Mist

71°F

22°C

Humidity 100%
Wind Speed SW 3 mph
Barometer 29.91 in (1012.3 mb)
Dewpoint 71°F (22°C)
Visibility 6.00 mi
Last update 4 Sep 4:52 am CDT
Extended Forecast for

Oswego IL

Heat Advisory September 4, 05:31am until September 4, 10:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 4, 05:31am until September 4, 10:00pm

    NOW until 10:00pm Fri

    Heat Advisory

  • Today

    High: 93 °F

    Sunny

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly between 1am and 4am. Partly cloudy, with a low around 72. West wind around 5 mph.

    Low: 72 °F

    Partly Cloudy
    then Chance
    T-storms

  • Saturday

    Saturday: A 10 percent chance of showers and thunderstorms before 7am. Sunny, with a high near 88. Heat index values as high as 99. Northwest wind 5 to 10 mph becoming north northeast in the morning.

    High: 88 °F

    Slight Chance
    T-storms then
    Sunny

  • Saturday Night

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

    Low: 66 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 83. East wind around 5 mph, with gusts as high as 15 mph.

    High: 83 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

  • Labor Day

    Labor Day: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy

Detailed Forecast

Today
Sunny, with a high near 93. Heat index values as high as 108. South southwest wind 5 to 10 mph becoming east northeast in the morning. Winds could gust as high as 15 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly between 1am and 4am. Partly cloudy, with a low around 72. West wind around 5 mph.
Saturday
A 10 percent chance of showers and thunderstorms before 7am. Sunny, with a high near 88. Heat index values as high as 99. Northwest wind 5 to 10 mph becoming north northeast in the morning.
Saturday Night
Partly cloudy, with a low around 66. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Sunday
Mostly sunny, with a high near 83. East wind around 5 mph, with gusts as high as 15 mph.
Sunday Night
Partly cloudy, with a low around 62.
Labor Day
Mostly sunny, with a high near 82.
Monday Night
Partly cloudy, with a low around 64.
Tuesday
Partly sunny, with a high near 85.
Tuesday Night
Partly cloudy, with a low around 71.
Wednesday
Mostly sunny, with a high near 88.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 69.
Thursday
Partly sunny, with a high near 83.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Oswego IL
 41.69°N 88.36°W
Last Update:
2:56 am CDT Sep 4, 2026
Forecast Valid:
5am CDT Sep 4, 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