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

29°C

85°F

Humidity 61%
Wind Speed SE 13 km/h
Barometer 30.00 in
Dewpoint 21°C (70°F)
Visibility 16 km
Heat Index32°C (90°F)
Last update 15 Jul 3:15 pm CDT
Extended Forecast for

De Kalb IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 31. South wind around 15 km/h.

    High: 31 °C

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of showers between 7pm and 8pm. Partly cloudy, with a low around 22. South wind 5 to 10 km/h. Chance of precipitation is 20%.

    Low: 22 °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. Increasing clouds, with a low around 19. West southwest wind 10 to 20 km/h. Chance of precipitation is 70%.

    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.

    Low: 13 °C

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 26.

    High: 26 °C

    Mostly Sunny

  • Friday Night

    Friday Night: A 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

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 31. South wind around 15 km/h.
Tonight
A slight chance of showers between 7pm and 8pm. Partly cloudy, with a low around 22. 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. Increasing clouds, with a low around 19. West southwest wind 10 to 20 km/h. Chance of precipitation is 70%.
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.
Friday
Mostly sunny, with a high near 26.
Friday Night
A 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.
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ABOUT THIS FORECAST

 
Point Forecast:
De Kalb IL
 41.94°N 88.76°W
Last Update:
2:26 pm CDT Jul 15, 2025
Forecast Valid:
3pm CDT Jul 15, 2025-6pm CDT Jul 21, 2025
 
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Additional Resources

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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