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.

Fair

87°F

31°C

Humidity 72%
Wind Speed SW 3 mph
Barometer 29.90 in (1011.8 mb)
Dewpoint 77°F (25°C)
Visibility 9.00 mi
Heat Index99°F (37°C)
Last update 4 Sep 6:52 pm CDT
Extended Forecast for

Somonauk IL

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

    NOW until 10:00pm Fri

    Heat Advisory

  • Tonight

    Low: 73 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms and
    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, sunny, with a high near 88. Heat index values as high as 95. North northeast wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 88 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 65. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 65 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 82. East wind 5 to 10 mph.

    High: 82 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 61. East wind around 5 mph, with gusts as high as 10 mph.

    Low: 61 °F

    Mostly Clear

  • 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 62.

    Low: 62 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms after midnight. Patchy fog after 4am. Otherwise, partly cloudy, with a low around 73. Southwest wind around 5 mph becoming calm in the evening.
Saturday
Patchy fog before 9am. Otherwise, sunny, with a high near 88. Heat index values as high as 95. North northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday Night
Partly cloudy, with a low around 65. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Sunday
Sunny, with a high near 82. East wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 61. East wind around 5 mph, with gusts as high as 10 mph.
Labor Day
Mostly sunny, with a high near 82.
Monday Night
Partly cloudy, with a low around 62.
Tuesday
Mostly sunny, with a high near 88.
Tuesday Night
Partly cloudy, with a low around 72.
Wednesday
Mostly sunny, with a high near 90.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 66.
Thursday
Mostly sunny, with a high near 82.
Thursday Night
Partly cloudy, with a low around 60.
Friday
Mostly sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Somonauk IL
 41.61°N 88.66°W
Last Update:
7:07 pm CDT Sep 4, 2026
Forecast Valid:
7pm CDT Sep 4, 2026-6pm CDT Sep 11, 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