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

23°C

74°F

Humidity 88%
Wind Speed W 9 km/h
Barometer 29.98 in
Dewpoint 21°C (70°F)
Visibility 16 km
Last update 12 Jul 9:35 pm CDT
Extended Forecast for

De Kalb IL

  • Tonight

    Tonight: Mostly clear, with a low around 16. West northwest wind around 10 km/h.

    Low: 16 °C

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 28. West wind 5 to 10 km/h.

    High: 28 °C

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 17. West northwest wind 5 to 10 km/h becoming south southwest after midnight.

    Low: 17 °C

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 31. Southwest wind 10 to 15 km/h, with gusts as high as 25 km/h.

    High: 31 °C

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 20. Calm wind.

    Low: 20 °C

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 29.

    High: 29 °C

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms, then a chance of showers after 1am. Mostly cloudy, with a low around 21. Chance of precipitation is 30%.

    Low: 21 °C

    Slight Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 29.

    High: 29 °C

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 19.

    Low: 19 °C

    Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 16. West northwest wind around 10 km/h.
Sunday
Mostly sunny, with a high near 28. West wind 5 to 10 km/h.
Sunday Night
Mostly clear, with a low around 17. West northwest wind 5 to 10 km/h becoming south southwest after midnight.
Monday
Sunny, with a high near 31. Southwest wind 10 to 15 km/h, with gusts as high as 25 km/h.
Monday Night
Mostly clear, with a low around 20. Calm wind.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 29.
Tuesday Night
A slight chance of showers and thunderstorms, then a chance of showers after 1am. Mostly cloudy, with a low around 21. Chance of precipitation is 30%.
Wednesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 29.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 19.
Thursday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 27.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 17.
Friday
Mostly cloudy, with a high near 26.
Friday Night
Partly cloudy, with a low around 17.
Saturday
Partly sunny, with a high near 27.
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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:
7:41 pm CDT Jul 12, 2025
Forecast Valid:
10pm CDT Jul 12, 2025-6pm CDT Jul 19, 2025
 
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