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

Extreme Heat and Tropical Storm Bertha Impacts

Dangerous heat will expand from the Gulf Coast into the Southern Plains and Desert Southwest through week's end. Additional extreme heat impacting the Pacific Northwest will shift to the northern Plains by the weekend. Tropical Storm Bertha is expected to continue to impact portions of the northwestern Gulf Coast from south central Louisiana to the upper Texas coast today. Read More >

Current conditions at

De Kalb Taylor Municipal Airport (KDKB)

Lat: 41.93°NLon: 88.71°WElev: 909ft.

Fair

54°F

12°C

Humidity 78%
Wind Speed NW 3 mph
Barometer 30.22 in
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 23 Jul 6:15 am CDT
Extended Forecast for

De Kalb IL

  • Today

    Today: Increasing clouds, with a high near 76. Calm wind becoming west around 5 mph.

    High: 76 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly cloudy, with a low around 56. South wind around 5 mph becoming calm.

    Low: 56 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 79. Light south wind increasing to 5 to 10 mph in the morning.

    High: 79 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 59. South southwest wind around 5 mph, with gusts as high as 10 mph.

    Low: 59 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 82. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 82 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 67.

    Low: 67 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A chance of showers after 1am. Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy
    then Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 92.

    High: 92 °F

    Mostly Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 76. Calm wind becoming west around 5 mph.
Tonight
Mostly cloudy, with a low around 56. South wind around 5 mph becoming calm.
Friday
Partly sunny, with a high near 79. Light south wind increasing to 5 to 10 mph in the morning.
Friday Night
Partly cloudy, with a low around 59. South southwest wind around 5 mph, with gusts as high as 10 mph.
Saturday
Partly sunny, with a high near 82. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday Night
Partly cloudy, with a low around 67.
Sunday
Mostly sunny, with a high near 90.
Sunday Night
A chance of showers after 1am. Partly cloudy, with a low around 72.
Monday
Mostly sunny, with a high near 92.
Monday Night
Partly cloudy, with a low around 69.
Tuesday
Mostly sunny, with a high near 87.
Tuesday Night
Mostly clear, with a low around 64.
Wednesday
Sunny, with a high near 86.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
De Kalb IL
 41.94°N 88.76°W
Last Update:
4:56 am CDT Jul 23, 2026
Forecast Valid:
6am CDT Jul 23, 2026-6pm CDT Jul 29, 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