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

49°F

9°C

Humidity 77%
Wind Speed S 15 mph
Barometer 29.93 in
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 21 Mar 9:55 am CDT
Extended Forecast for

De Kalb IL

  • Today

    Today: Mostly sunny, with a high near 77. South southwest wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 77 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 45. Southwest wind 5 to 15 mph becoming north northeast after midnight. Winds could gust as high as 20 mph.

    Low: 45 °F

    Mostly Clear

  • Sunday

    Sunday: A 30 percent chance of rain, mainly between 10am and 4pm. Mostly cloudy, with a temperature falling to around 44 by 2pm. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 25 mph.

    High: 46 °F⇓

    Chance Rain
    and Breezy

  • Sunday Night

    Sunday Night: A 10 percent chance of rain before 7pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 27. North wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 27 °F

    Slight Chance
    Rain then
    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 47. North wind around 5 mph, with gusts as high as 15 mph.

    High: 47 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 57.

    High: 57 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 55.

    High: 55 °F

    Mostly Cloudy

Detailed Forecast

Today
Mostly sunny, with a high near 77. South southwest wind 10 to 15 mph, with gusts as high as 30 mph.
Tonight
Mostly clear, with a low around 45. Southwest wind 5 to 15 mph becoming north northeast after midnight. Winds could gust as high as 20 mph.
Sunday
A 30 percent chance of rain, mainly between 10am and 4pm. Mostly cloudy, with a temperature falling to around 44 by 2pm. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 25 mph.
Sunday Night
A 10 percent chance of rain before 7pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 27. North wind 10 to 15 mph, with gusts as high as 25 mph.
Monday
Sunny, with a high near 47. North wind around 5 mph, with gusts as high as 15 mph.
Monday Night
Mostly cloudy, with a low around 31.
Tuesday
Mostly cloudy, with a high near 57.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
Mostly cloudy, with a high near 55.
Wednesday Night
Mostly cloudy, with a low around 45.
Thursday
A chance of showers. Partly sunny, with a high near 64.
Thursday Night
Mostly cloudy, with a low around 30.
Friday
Mostly sunny, with a high near 46.
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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:
8:56 am CDT Mar 21, 2026
Forecast Valid:
10am CDT Mar 21, 2026-6pm CDT Mar 27, 2026
 
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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