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

De Kalb Taylor Municipal Airport (KDKB)

Lat: 41.93°NLon: 88.71°WElev: 909ft.

Fair

69°F

21°C

Humidity 77%
Wind Speed W 5 mph
Barometer 30.03 in
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 17 Aug 9:35 pm CDT
Extended Forecast for

De Kalb IL

  • Tonight

    Tonight: Mostly clear, with a low around 61. Southwest wind around 5 mph.

    Low: 61 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 79. West southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 79 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms, mainly before 3am. Mostly cloudy, with a low around 64. West southwest wind 5 to 10 mph.

    Low: 64 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Partly sunny, with a high near 78. North wind around 5 mph.

    High: 78 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 59. North wind around 5 mph becoming calm.

    Low: 59 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of showers after 1am. Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Friday

    Friday: A chance of showers after 1pm. Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers. Partly cloudy, with a low around 61.

    Low: 61 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 61. Southwest wind around 5 mph.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 79. West southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
A 50 percent chance of showers and thunderstorms, mainly before 3am. Mostly cloudy, with a low around 64. West southwest wind 5 to 10 mph.
Wednesday
Partly sunny, with a high near 78. North wind around 5 mph.
Wednesday Night
Partly cloudy, with a low around 59. North wind around 5 mph becoming calm.
Thursday
Sunny, with a high near 78.
Thursday Night
A 20 percent chance of showers after 1am. Mostly clear, with a low around 58.
Friday
A chance of showers after 1pm. Mostly sunny, with a high near 78.
Friday Night
A chance of showers. Partly cloudy, with a low around 61.
Saturday
Mostly sunny, with a high near 76.
Saturday Night
Mostly clear, with a low around 57.
Sunday
Mostly sunny, with a high near 74.
Sunday Night
Partly cloudy, with a low around 56.
Monday
Mostly sunny, with a high near 75.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
De Kalb IL
 41.92°N 88.76°W
Last Update:
9:16 pm CDT Aug 17, 2026
Forecast Valid:
9pm CDT Aug 17, 2026-6pm CDT Aug 24, 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