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

28°C

82°F

Humidity 52%
Wind Speed S 6 km/h
Barometer 30.09 in
Dewpoint 17°C (63°F)
Visibility 16 km
Heat Index28°C (83°F)
Last update 14 Jul 4:15 pm CDT
Extended Forecast for

De Kalb IL

  • Tonight

    Tonight: Mostly clear, with a low around 18. Calm wind.

    Low: 18 °C

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 31. South wind 5 to 10 km/h.

    High: 31 °C

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 21. South wind 5 to 10 km/h.

    Low: 21 °C

    Partly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 32. Heat index values as high as 37. South southwest wind 10 to 15 km/h, with gusts as high as 25 km/h.

    High: 32 °C

    Partly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 21. West southwest wind around 10 km/h, with gusts as high as 20 km/h. Chance of precipitation is 60%.

    Low: 21 °C

    T-storms
    Likely

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 26.

    High: 26 °C

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 17.

    Low: 17 °C

    Chance
    T-storms

  • Friday

    Friday: Mostly sunny, with a high near 27.

    High: 27 °C

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 18.

    Low: 18 °C

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 18. Calm wind.
Tuesday
Sunny, with a high near 31. South wind 5 to 10 km/h.
Tuesday Night
Partly cloudy, with a low around 21. South wind 5 to 10 km/h.
Wednesday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 32. Heat index values as high as 37. South southwest wind 10 to 15 km/h, with gusts as high as 25 km/h.
Wednesday Night
Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 21. West southwest wind around 10 km/h, with gusts as high as 20 km/h. Chance of precipitation is 60%.
Thursday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 26.
Thursday Night
A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 17.
Friday
Mostly sunny, with a high near 27.
Friday Night
Partly cloudy, with a low around 18.
Saturday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 28.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 21.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 29.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 18.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 29.
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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:
4:12 pm CDT Jul 14, 2025
Forecast Valid:
4pm CDT Jul 14, 2025-6pm CDT Jul 21, 2025
 
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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