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.

Fair

30°C

86°F

Humidity 61%
Wind Speed S 9 km/h
Barometer 29.98 in
Dewpoint 22°C (71°F)
Visibility 16 km
Heat Index33°C (91°F)
Last update 15 Jul 4:35 pm CDT
Extended Forecast for

De Kalb IL

  • Tonight

    Tonight: A slight chance of showers between 7pm and 8pm. Partly cloudy, with a low around 21. South wind 5 to 10 km/h. Chance of precipitation is 20%.

    Low: 21 °C

    Slight Chance
    Showers then
    Partly Cloudy

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after 4pm. Partly sunny, with a high near 32. Heat index values as high as 37. South southwest wind 10 to 15 km/h increasing to 20 to 25 km/h in the afternoon. Winds could gust as high as 35 km/h. Chance of precipitation is 60%. New rainfall amounts between 5 and 7.5 mm possible.

    High: 32 °C

    Mostly Sunny
    then T-storms
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 19. West southwest wind 10 to 20 km/h. Chance of precipitation is 70%. New rainfall amounts between 5 and 7.5 mm possible.

    Low: 19 °C

    T-storms
    Likely

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 23. North wind 15 to 20 km/h.

    High: 23 °C

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 13. Northeast wind 10 to 15 km/h, with gusts as high as 25 km/h.

    Low: 13 °C

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 26.

    High: 26 °C

    Mostly Sunny

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 17.

    Low: 17 °C

    Partly Cloudy
    then Chance
    T-storms

  • Saturday

    Saturday: Showers and thunderstorms likely, mainly before 1pm. Mostly cloudy, with a high near 28.

    High: 28 °C

    T-storms
    Likely

  • Saturday Night

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

    Low: 19 °C

    Chance
    T-storms

Detailed Forecast

Tonight
A slight chance of showers between 7pm and 8pm. Partly cloudy, with a low around 21. South wind 5 to 10 km/h. Chance of precipitation is 20%.
Wednesday
Showers and thunderstorms likely, mainly after 4pm. Partly sunny, with a high near 32. Heat index values as high as 37. South southwest wind 10 to 15 km/h increasing to 20 to 25 km/h in the afternoon. Winds could gust as high as 35 km/h. Chance of precipitation is 60%. New rainfall amounts between 5 and 7.5 mm possible.
Wednesday Night
Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 19. West southwest wind 10 to 20 km/h. Chance of precipitation is 70%. New rainfall amounts between 5 and 7.5 mm possible.
Thursday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 23. North wind 15 to 20 km/h.
Thursday Night
Mostly cloudy, with a low around 13. Northeast wind 10 to 15 km/h, with gusts as high as 25 km/h.
Friday
Mostly sunny, with a high near 26.
Friday Night
A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 17.
Saturday
Showers and thunderstorms likely, mainly before 1pm. Mostly cloudy, with a high near 28.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 19.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 28.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 17.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 28.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 19.
Tuesday
Mostly sunny, with a high near 30.
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ABOUT THIS FORECAST

 
Point Forecast:
De Kalb IL
 41.92°N 88.76°W
Last Update:
4:12 pm CDT Jul 15, 2025
Forecast Valid:
4pm CDT Jul 15, 2025-6pm CDT Jul 22, 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