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January 9th, 2026 :: 9:04 am CST   

Local Weather Report for
Dekalb
Illinois, United States

 Current Dekalb Weather Conditions Updated January 9th at 7:55 am 
Overcast
Temperature:39°F Dew Point:39°F
Barometer:29.77 inHg Wind:calm
Humidity:100.0% Visibility:0M
 
 Dekalb Weather Forecast Summary  
 
Today
Jan 9th
Saturday
Jan 10th
Sunday
Jan 11th
Monday
Jan 12th
Tuesday
Jan 13th
Cloudy Mix of rain and snow Cloudy Cloudy Cloudy
46°F
34°F
18°F
28°F
16°F
35°F
22°F
39°F
31°F
 
 Dekalb Detailed Weather Forecast  
 
Friday, January 9th, 2026
Morning Temperature: 41°F
Sunny. Windy at times.
Afternoon Temperature: 37°F
Sunny.
Evening Temperature: 33°F
Clear.
Saturday, January 10th, 2026
Overnight Temperature: 31°F
Cloudy.
Morning Temperature: 33°F
Cloudy with flurries or showers likely. Risk of freezing rain. Windy.
Afternoon Temperature: 29°F
Mostly cloudy with a chance of flurries. Windy.
Evening Temperature: 20°F
Cloudy. Windy.
Sunday, January 11th, 2026
Overnight Temperature: 16°F
Cloudy. Windy.
Morning Temperature: 24°F
Cloudy. Windy.
Afternoon Temperature: 25°F
Sunny. Windy at times.
Evening Temperature: 22°F
Clear. Windy at times.
Monday, January 12th, 2026
Overnight Temperature: 23°F
Cloudy. Windy at times.
Morning Temperature: 32°F
Cloudy. Windy.
Afternoon Temperature: 30°F
A mix of cloud and sun.
Evening Temperature: 30°F
Cloudy.
Tuesday, January 13th, 2026
Overnight Temperature: 32°F
Cloudy with a chance of flurries or showers.
Morning Temperature: 36°F
Cloudy. Windy at times.
Afternoon Temperature: 33°F
Mostly sunny. Windy at times.
Evening Temperature: 32°F
Cloudy. Windy.
Wednesday, January 14th, 2026
Overnight Temperature: 29°F
Cloudy. Windy at times.
Morning Temperature: 28°F
A mix of sun and cloud. Windy at times.
Afternoon Temperature: 24°F
Cloudy. Windy at times.
Evening Temperature: 22°F
Clear. Windy at times.
Thursday, January 15th, 2026
Overnight Temperature: 18°F
Clear. Windy at times.
Morning Temperature: 21°F
Sunny with cloudy periods. Windy at times.
Afternoon Temperature: 22°F
Sunny.
Evening Temperature: 19°F
Clear.
Friday, January 16th, 2026
Overnight Temperature: 17°F
Clear.
Morning Temperature: 23°F
Sunny with cloudy periods.
Afternoon Temperature: 23°F
Sunny.
Evening Temperature: 21°F
Cloudy. Windy at times.





 

  [ Local Weather Report ]
De Kalb, IL 
7:55 AM  39°F
Overcast
 
Sycamore, IL 
7:55 AM  39°F
Overcast
 
Genoa, IL 
 
Rochelle, IL 
 
Sandwich, IL 
 
Plano, IL 
 
Batavia, IL 
7:52 AM  39°F
Overcast
 
Geneva, IL 
7:52 AM  39°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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