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

Hazardous Weather Conditions

Current conditions at

De Kalb Taylor Municipal Airport (KDKB)

Lat: 41.93°NLon: 88.71°WElev: 909ft.

Thunderstorm in Vicinity Fog/Mist

68°F

20°C

Humidity 100%
Wind Speed E 10 mph
Barometer 29.99 in
Dewpoint 68°F (20°C)
Visibility 5.00 mi
Last update 13 Aug 7:55 pm CDT
Extended Forecast for

De Kalb IL

Flood Watch until August 14, 10:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch until August 14, 10:00am

    NOW until 10:00am Fri

    Flood Watch

  • Tonight

    Low: 66 °F

    Showers

  • Friday

    Friday: A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 11am. Mostly cloudy, with a high near 79. East wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

    High: 79 °F

    Chance
    Showers then
    Mostly Cloudy

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms before 9pm, then a chance of showers and thunderstorms after 10pm. Mostly cloudy, with a low around 68. East wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 50%.

    Low: 68 °F

    Chance
    T-storms

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 84. Southeast wind around 10 mph becoming south southwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 70%.

    High: 84 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. West southwest wind 5 to 10 mph. Chance of precipitation is 40%.

    Low: 69 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers before 7am, then a slight chance of showers and thunderstorms between 7am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 82. Chance of precipitation is 60%.

    High: 82 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 64.

    Low: 64 °F

    Slight Chance
    T-storms

  • Monday

    Monday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

Detailed Forecast

Tonight
Showers and possibly a thunderstorm. Low around 66. East wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Friday
A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 11am. Mostly cloudy, with a high near 79. East wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Friday Night
A slight chance of showers and thunderstorms before 9pm, then a chance of showers and thunderstorms after 10pm. Mostly cloudy, with a low around 68. East wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 50%.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 84. Southeast wind around 10 mph becoming south southwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 70%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. West southwest wind 5 to 10 mph. Chance of precipitation is 40%.
Sunday
A slight chance of showers before 7am, then a slight chance of showers and thunderstorms between 7am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 82. Chance of precipitation is 60%.
Sunday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 64.
Monday
Mostly sunny, with a high near 79.
Monday Night
Mostly clear, with a low around 60.
Tuesday
Mostly sunny, with a high near 79.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 64.
Wednesday
A chance of showers. Mostly cloudy, with a high near 80.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62.
Thursday
Partly sunny, with a high near 77.
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ABOUT THIS FORECAST

 
Point Forecast:
De Kalb IL
 41.92°N 88.76°W
Last Update:
7:46 pm CDT Aug 13, 2026
Forecast Valid:
8pm CDT Aug 13, 2026-6pm CDT Aug 20, 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