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January 15th, 2026 :: 12:22 am CST   

Local Weather Report for
De Kalb
Illinois, United States

 Current De Kalb Weather Conditions Updated January 14th at 10:55 pm 
Overcast
Temperature:16°F Dew Point:7°F
Barometer:30.04 inHg Wind:calm
Humidity:65.0% Visibility:0M
 
 De Kalb Weather Forecast Summary  
 
Today
Jan 15th
Friday
Jan 16th
Saturday
Jan 17th
Sunday
Jan 18th
Monday
Jan 19th
Cloudy Cloudy Cloudy Cloudy Cloudy
24°F
34°F
20°F
16°F
12°F
16°F
10°F
18°F
7°F
 
 De Kalb Detailed Weather Forecast  
 
Thursday, January 15th, 2026
Overnight Temperature: 15°F
Clear. Windy at times.
Morning Temperature: 19°F
Cloudy. Windy at times.
Afternoon Temperature: 23°F
Cloudy.
Evening Temperature: 24°F
Cloudy. Windy at times.
Friday, January 16th, 2026
Overnight Temperature: 26°F
Cloudy with a chance of flurries. Windy at times.
Morning Temperature: 32°F
Cloudy with a slight chance of flurries or showers. Risk of freezing rain. Windy.
Afternoon Temperature: 29°F
Cloudy. Windy at times.
Evening Temperature: 22°F
Cloudy with a chance of flurries. Windy.
Saturday, January 17th, 2026
Overnight Temperature: 15°F
Cloudy. Windy.
Morning Temperature: 14°F
Cloudy. Windy at times.
Afternoon Temperature: 13°F
Cloudy. Windy at times.
Evening Temperature: 12°F
Cloudy with a slight chance of flurries. Windy at times.
Sunday, January 18th, 2026
Overnight Temperature: 10°F
Cloudy. Windy at times.
Morning Temperature: 13°F
Cloudy. Windy at times.
Afternoon Temperature: 14°F
Cloudy. Windy at times.
Evening Temperature: 16°F
Cloudy. Windy at times.
Monday, January 19th, 2026
Overnight Temperature: 17°F
Cloudy. Windy at times.
Morning Temperature: 14°F
Cloudy. Windy.
Afternoon Temperature: 11°F
Sunny. Windy at times.
Evening Temperature: 8°F
Clear. Windy at times.
Tuesday, January 20th, 2026
Overnight Temperature: 5°F
Clear. Windy at times.
Morning Temperature: 11°F
Sunny with cloudy periods. Windy.
Afternoon Temperature: 13°F
Cloudy.
Evening Temperature: 16°F
Cloudy.
Wednesday, January 21st, 2026
Overnight Temperature: 16°F
Cloudy with a chance of flurries.
Morning Temperature: 14°F
Cloudy. Windy at times.
Afternoon Temperature: 12°F
Sunny.
Evening Temperature: 12°F
A mix of cloudy and clear skies. Windy at times.
Thursday, January 22nd, 2026
Overnight Temperature: 15°F
Cloudy. Windy at times.
Morning Temperature: 24°F
Cloudy. Windy at times.
Afternoon Temperature: 23°F
Cloudy.
Evening Temperature: 17°F
Clear. Windy at times.





 

  [ Local Weather Report ]
Dekalb, IL 
10:55 PM  16°F
Overcast
 
Sycamore, IL 
10:55 PM  16°F
Overcast
 
Genoa, IL 
 
Rochelle, IL 
 
Sandwich, IL 
 
Batavia, IL 
10:52 PM  18°F
Overcast
 
Geneva, IL 
10:52 PM  18°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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