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.

Mostly Cloudy

9°F

-13°C

Humidity 75%
Wind Speed NW 5 mph
Barometer 30.32 in
Dewpoint 2°F (-17°C)
Visibility 10.00 mi
Wind Chill0°F (-18°C)
Last update 7 Dec 6:35 pm CST
Extended Forecast for

Sycamore IL

  • Tonight

    Tonight: Increasing clouds, with a temperature falling to near 0 by 8pm, then rising to around 11 during the remainder of the night. Wind chill values as low as -13. North wind 5 to 10 mph becoming light and variable after midnight.

    Low: 0 °F⇑

    Increasing
    Clouds

  • Monday

    Monday: Mostly cloudy, with a high near 21. Light and variable wind becoming south 5 to 10 mph in the morning.

    High: 21 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a temperature rising to around 25 by 5am. South wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 16 °F⇑

    Slight Chance
    Snow then
    Mostly Cloudy

  • Tuesday

    Tuesday: Cloudy, with a high near 35. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 35 °F

    Cloudy

  • Tuesday Night

    Tuesday Night: Rain and snow before 9pm, then rain between 9pm and 3am, then snow likely after 3am. Low around 32. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.

    Low: 32 °F

    Rain/Snow and
    Breezy

  • Wednesday

    Wednesday: A 30 percent chance of snow, mainly before noon. Mostly cloudy, with a high near 34. Breezy.

    High: 34 °F

    Chance Snow
    and Breezy

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 13.

    Low: 13 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Thursday

    Thursday: A chance of snow. Partly sunny, with a high near 21.

    High: 21 °F

    Chance Snow

  • Thursday Night

    Thursday Night: A chance of snow before midnight. Mostly cloudy, with a low around 4.

    Low: 4 °F

    Chance Snow
    then Mostly
    Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a temperature falling to near 0 by 8pm, then rising to around 11 during the remainder of the night. Wind chill values as low as -13. North wind 5 to 10 mph becoming light and variable after midnight.
Monday
Mostly cloudy, with a high near 21. Light and variable wind becoming south 5 to 10 mph in the morning.
Monday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a temperature rising to around 25 by 5am. South wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday
Cloudy, with a high near 35. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Rain and snow before 9pm, then rain between 9pm and 3am, then snow likely after 3am. Low around 32. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.
Wednesday
A 30 percent chance of snow, mainly before noon. Mostly cloudy, with a high near 34. Breezy.
Wednesday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 13.
Thursday
A chance of snow. Partly sunny, with a high near 21.
Thursday Night
A chance of snow before midnight. Mostly cloudy, with a low around 4.
Friday
Mostly cloudy, with a high near 14.
Friday Night
Mostly cloudy, with a low around -3.
Saturday
Partly sunny and cold, with a high near 7.
Saturday Night
Mostly cloudy, with a low around -4.
Sunday
Mostly sunny, with a high near 12.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sycamore IL
 41.98°N 88.7°W
Last Update:
6:25 pm CST Dec 7, 2025
Forecast Valid:
6pm CST Dec 7, 2025-6pm CST Dec 14, 2025
 
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Additional Resources

Radar & Satellite Image

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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