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January 4th, 2026 :: 9:41 pm CST   

Local Weather Report for
De Kalb
Illinois, United States

 Current De Kalb Weather Conditions Updated January 4th at 8:55 pm 
Overcast
Temperature:30°F Dew Point:27°F
Barometer:29.95 inHg Wind:calm
Humidity:86.2% Visibility:0M
 
 De Kalb Weather Forecast Summary  
 
Today
Jan 4th
Monday
Jan 5th
Tuesday
Jan 6th
Wednesday
Jan 7th
Thursday
Jan 8th
Cloudy Cloudy Cloudy Cloudy Cloudy
29°F
37°F
28°F
45°F
35°F
44°F
32°F
47°F
33°F
 
 De Kalb Detailed Weather Forecast  
 
Monday, January 5th, 2026
Overnight Temperature: 28°F
Cloudy. Windy at times.
Morning Temperature: 34°F
Cloudy.
Afternoon Temperature: 33°F
Cloudy.
Evening Temperature: 34°F
Cloudy.
Tuesday, January 6th, 2026
Overnight Temperature: 35°F
Cloudy.
Morning Temperature: 42°F
Cloudy. Windy at times.
Afternoon Temperature: 40°F
Cloudy. Windy at times.
Evening Temperature: 37°F
Cloudy. Windy at times.
Wednesday, January 7th, 2026
Overnight Temperature: 34°F
Clear with cloudy periods.
Morning Temperature: 39°F
A mix of cloud and sun.
Afternoon Temperature: 40°F
A mix of cloud and sun.
Evening Temperature: 38°F
Cloudy.
Thursday, January 8th, 2026
Overnight Temperature: 36°F
Mostly clear.
Morning Temperature: 43°F
Sunny with cloudy periods. Windy at times.
Afternoon Temperature: 36°F
Cloudy.
Evening Temperature: 34°F
Cloudy.
Friday, January 9th, 2026
Overnight Temperature: 32°F
Cloudy.
Morning Temperature: 35°F
Cloudy.
Afternoon Temperature: 32°F
Cloudy.
Evening Temperature: 31°F
Cloudy with a chance of flurries.
Saturday, January 10th, 2026
Overnight Temperature: 29°F
Cloudy with a chance of flurries. Windy.
Morning Temperature: 25°F
Cloudy. Windy.
Afternoon Temperature: 23°F
A mix of cloud and sun. Windy at times.
Evening Temperature: 21°F
Clear with cloudy periods. Windy at times.
Sunday, January 11th, 2026
Overnight Temperature: 20°F
Clear. Windy at times.
Morning Temperature: 27°F
Sunny. Windy at times.
Afternoon Temperature: 26°F
Sunny.
Evening Temperature: 26°F
Clear. Windy at times.
Monday, January 12th, 2026
Overnight Temperature: 28°F
Clear. Windy.
Morning Temperature: 37°F
A mix of cloud and sun. Windy.
Afternoon Temperature: 38°F
A mix of cloud and sun. Windy.
Evening Temperature: 34°F
Cloudy. Windy.





 

  [ Local Weather Report ]
Dekalb, IL 
8:55 PM  30°F
Overcast
 
Sycamore, IL 
8:55 PM  30°F
Overcast
 
Genoa, IL 
 
Rochelle, IL 
 
Sandwich, IL 
 
Batavia, IL 
8:52 PM  30°F
Overcast
 
Geneva, IL 
8:52 PM  30°F
Overcast
 
Plano, IL 
 
Marengo, IL 
 
Aurora, IL 

 
This WeatherCity Weather Forecast for De Kalb, Illinois, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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