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January 11th, 2026 :: 2:16 pm CST   

Local Weather Report for
Dekalb
Illinois, United States

 Current Dekalb Weather Conditions Updated January 11th at 12:55 pm 
Overcast
Temperature:30°F Dew Point:23°F
Barometer:30.36 inHg Wind:calm
Humidity:74.1% Visibility:0M
 
 Dekalb Weather Forecast Summary  
 
Today
Jan 11th
Monday
Jan 12th
Tuesday
Jan 13th
Wednesday
Jan 14th
Thursday
Jan 15th
Cloudy Cloudy Cloudy Cloudy Cloudy
31°F
40°F
28°F
44°F
33°F
36°F
16°F
24°F
15°F
 
 Dekalb Detailed Weather Forecast  
 
Sunday, January 11th, 2026
Afternoon Temperature: 27°F
Cloudy. Windy at times.
Evening Temperature: 27°F
Cloudy. Windy at times.
Monday, January 12th, 2026
Overnight Temperature: 29°F
Cloudy. Windy at times.
Morning Temperature: 35°F
Cloudy. Windy at times.
Afternoon Temperature: 33°F
Sunny.
Evening Temperature: 32°F
Cloudy.
Tuesday, January 13th, 2026
Overnight Temperature: 34°F
Cloudy. Windy at times.
Morning Temperature: 40°F
Cloudy. Windy.
Afternoon Temperature: 41°F
Cloudy. Windy.
Evening Temperature: 37°F
Cloudy. Windy at times.
Wednesday, January 14th, 2026
Overnight Temperature: 34°F
Cloudy. Windy.
Morning Temperature: 24°F
Cloudy. Windy.
Afternoon Temperature: 19°F
Cloudy. Windy.
Evening Temperature: 17°F
Cloudy. Windy.
Thursday, January 15th, 2026
Overnight Temperature: 15°F
Clear with cloudy periods. Windy.
Morning Temperature: 21°F
Cloudy. Windy.
Afternoon Temperature: 21°F
A mix of sun and cloud.
Evening Temperature: 20°F
Cloudy.
Friday, January 16th, 2026
Overnight Temperature: 21°F
Cloudy.
Morning Temperature: 28°F
Cloudy. Windy at times.
Afternoon Temperature: 29°F
Cloudy with sunny periods. Windy at times.
Evening Temperature: 28°F
A mix of cloudy and clear skies. Windy at times.
Saturday, January 17th, 2026
Overnight Temperature: 27°F
Clear with cloudy periods. Windy at times.
Morning Temperature: 25°F
Cloudy. Windy.
Afternoon Temperature: 22°F
Sunny. Windy at times.
Evening Temperature: 19°F
Clear. Windy at times.
Sunday, January 18th, 2026
Overnight Temperature: 18°F
Clear. Windy at times.
Morning Temperature: 28°F
Sunny. Windy.
Afternoon Temperature: 30°F
Cloudy. Windy at times.
Evening Temperature: 30°F
Cloudy. Windy at times.
Monday, January 19th, 2026
Overnight Temperature: 29°F
Cloudy. Windy.
Morning Temperature: 25°F
Sunny with cloudy periods. Windy.
Afternoon Temperature: 25°F
Sunny. Windy at times.
Evening Temperature: 23°F
Clear with cloudy periods. Windy at times.





 

  [ Local Weather Report ]
De Kalb, IL 
12:55 PM  30°F
Overcast
 
Sycamore, IL 
12:55 PM  30°F
Overcast
 
Genoa, IL 
 
Rochelle, IL 
 
Sandwich, IL 
 
Plano, IL 
 
Batavia, IL 
12:52 PM  30°F
Overcast
 
Geneva, IL 
12:52 PM  30°F
Overcast
 
Marengo, IL 
 
Belvidere, IL 

 
This WeatherCity Weather Forecast for Dekalb, 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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