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 northern Gulf Coast from the western Florida Panhandle to southeastern Louisiana through tonight. Read More >

Hazardous Weather Conditions

Current conditions at

De Kalb Taylor Municipal Airport (KDKB)

Lat: 41.93°NLon: 88.71°WElev: 909ft.

Fair

56°F

13°C

Humidity 70%
Wind Speed SW 3 mph
Barometer 30.19 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 23 Jul 2:15 am CDT
Extended Forecast for

Sycamore IL

  • Overnight

    Overnight: Clear, with a low around 50. Calm wind.

    Low: 50 °F

    Clear

  • Thursday

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

    High: 76 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 56. South wind around 5 mph becoming calm in the evening.

    Low: 56 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 79. Light and variable wind becoming south 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.

    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

Detailed Forecast

Overnight
Clear, with a low around 50. Calm wind.
Thursday
Increasing clouds, with a high near 76. Calm wind becoming west around 5 mph.
Thursday Night
Mostly cloudy, with a low around 56. South wind around 5 mph becoming calm in the evening.
Friday
Partly sunny, with a high near 79. Light and variable wind becoming south 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.
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 91.
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 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sycamore IL
 41.98°N 88.7°W
Last Update:
1:21 am CDT Jul 23, 2026
Forecast Valid:
2am 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