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.

Overcast

8°F

-13°C

Humidity 77%
Wind Speed Calm
Barometer 30.33 in
Dewpoint 3°F (-16°C)
Visibility 10.00 mi
Last update 8 Dec 12:55 am CST
Extended Forecast for

De Kalb IL

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 9. Wind chill values as low as -2. North wind around 5 mph.

    Low: 9 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 21. East northeast wind 5 to 10 mph becoming south in the afternoon.

    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 26 by 5am. South wind 10 to 15 mph, with gusts as high as 30 mph.

    Low: 16 °F⇑

    Slight Chance
    Snow then
    Mostly Cloudy

  • Tuesday

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

    High: 35 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Rain and snow before 9pm, then rain between 9pm and 3am, then a chance of snow 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

    Breezy.
    Rain/Snow
    then Chance
    Rain/Snow

  • 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

Overnight
Mostly cloudy, with a steady temperature around 9. Wind chill values as low as -2. North wind around 5 mph.
Monday
Mostly cloudy, with a high near 21. East northeast wind 5 to 10 mph becoming south in the afternoon.
Monday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a temperature rising to around 26 by 5am. South wind 10 to 15 mph, with gusts as high as 30 mph.
Tuesday
Mostly 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 a chance of snow 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:
De Kalb IL
 41.92°N 88.76°W
Last Update:
12:11 am CST Dec 8, 2025
Forecast Valid:
1am CST Dec 8, 2025-6pm CST Dec 14, 2025
 
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