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

17°F

-8°C

Humidity 73%
Wind Speed Calm
Barometer 30.36 in
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Last update 8 Dec 10:55 am CST
Extended Forecast for

De Kalb IL

  • Today

    Today: Partly sunny, with a high near 21. South southeast wind 5 to 10 mph.

    High: 21 °F

    Partly Sunny

  • Tonight

    Tonight: A slight chance of snow between midnight and 3am. Mostly cloudy, with a temperature rising to around 25 by 5am. South southeast wind 5 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

    Low: 16 °F⇑

    Mostly Cloudy
    then Slight
    Chance Snow

  • Tuesday

    Tuesday: Cloudy, with a high near 36. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 36 °F

    Cloudy

  • Tuesday Night

    Tuesday Night: Rain. Low around 31. Breezy, with a south wind 15 to 20 mph becoming west 20 to 25 mph after midnight. Winds could gust as high as 35 mph. Chance of precipitation is 90%.

    Low: 31 °F

    Breezy. Rain
    then Rain
    Likely

  • Wednesday

    Wednesday: A chance of rain and snow before 9am, then a chance of snow. Mostly cloudy, with a high near 35. Breezy, with a northwest wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 40%.

    High: 35 °F

    Breezy.
    Chance
    Rain/Snow
    then Slight
    Chance Snow

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 9.

    Low: 9 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of snow. Mostly cloudy, with a high near 21.

    High: 21 °F

    Slight Chance
    Snow

  • Thursday Night

    Thursday Night: A chance of snow. Mostly cloudy, with a low around 8.

    Low: 8 °F

    Chance Snow

  • Friday

    Friday: A chance of snow. Mostly cloudy, with a high near 17.

    High: 17 °F

    Chance Snow

Detailed Forecast

Today
Partly sunny, with a high near 21. South southeast wind 5 to 10 mph.
Tonight
A slight chance of snow between midnight and 3am. Mostly cloudy, with a temperature rising to around 25 by 5am. South southeast wind 5 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Tuesday
Cloudy, with a high near 36. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Rain. Low around 31. Breezy, with a south wind 15 to 20 mph becoming west 20 to 25 mph after midnight. Winds could gust as high as 35 mph. Chance of precipitation is 90%.
Wednesday
A chance of rain and snow before 9am, then a chance of snow. Mostly cloudy, with a high near 35. Breezy, with a northwest wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 40%.
Wednesday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 9.
Thursday
A 20 percent chance of snow. Mostly cloudy, with a high near 21.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 8.
Friday
A chance of snow. Mostly cloudy, with a high near 17.
Friday Night
Mostly cloudy, with a low around -3.
Saturday
Partly sunny and cold, with a high near 6.
Saturday Night
Mostly cloudy, with a low around -3.
Sunday
Mostly sunny, with a high near 14.
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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:
10:26 am CST Dec 8, 2025
Forecast Valid:
11am 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