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January 23rd, 2026 :: 6:18 am CST   

Local Weather Report for
Dekalb
Illinois, United States

 Current Dekalb Weather Conditions Updated January 23rd at 4:55 am 
Temperature:-8°F Dew Point:-18°F
Barometer:30.51 inHg Wind:calm
Humidity:-19.6% Visibility:0M
 
 Dekalb Weather Forecast Summary  
 
Today
Jan 23rd
Saturday
Jan 24th
Sunday
Jan 25th
Monday
Jan 26th
Tuesday
Jan 27th
Cloudy Cloudy Cloudy Cloudy Cloudy
-6°F
6°F
-7°F
16°F
5°F
12°F
4°F
15°F
6°F
 
 Dekalb Detailed Weather Forecast  
 
Friday, January 23rd, 2026
Morning Temperature: -9°F
A mix of cloud and sun. Windy at times.
Afternoon Temperature: -7°F
Sunny. Windy at times.
Evening Temperature: -8°F
Cloudy. Windy at times.
Saturday, January 24th, 2026
Overnight Temperature: -7°F
Cloudy.
Morning Temperature: 1°F
Cloudy.
Afternoon Temperature: 5°F
Cloudy.
Evening Temperature: 5°F
Cloudy.
Sunday, January 25th, 2026
Overnight Temperature: 7°F
Cloudy.
Morning Temperature: 12°F
Cloudy. Windy at times.
Afternoon Temperature: 12°F
Cloudy. Windy at times.
Evening Temperature: 6°F
Clear with cloudy periods. Windy at times.
Monday, January 26th, 2026
Overnight Temperature: 4°F
Cloudy. Windy at times.
Morning Temperature: 8°F
Sunny. Windy at times.
Afternoon Temperature: 9°F
Sunny. Windy at times.
Evening Temperature: 11°F
Cloudy. Windy.
Tuesday, January 27th, 2026
Overnight Temperature: 12°F
A mix of cloudy and clear skies. Windy.
Morning Temperature: 14°F
Cloudy. Windy.
Afternoon Temperature: 10°F
Sunny with cloudy periods. Windy at times.
Evening Temperature: 7°F
Clear. Windy at times.
Wednesday, January 28th, 2026
Overnight Temperature: 4°F
Clear with cloudy periods.
Morning Temperature: 10°F
A mix of cloud and sun. Windy at times.
Afternoon Temperature: 10°F
Sunny.
Evening Temperature: 7°F
Clear with cloudy periods.
Thursday, January 29th, 2026
Overnight Temperature: 4°F
Cloudy.
Morning Temperature: 12°F
Cloudy.
Afternoon Temperature: 15°F
Cloudy.
Evening Temperature: 16°F
Cloudy with a chance of flurries.
Friday, January 30th, 2026
Overnight Temperature: 17°F
Cloudy with a chance of flurries. Windy at times.
Morning Temperature: 20°F
Cloudy with flurries likely. Windy at times.
Afternoon Temperature: 20°F
Cloudy with flurries likely. Windy at times.
Evening Temperature: 19°F
Cloudy with a chance of flurries. Windy at times.
Saturday, January 31st, 2026
Overnight Temperature: 20°F
Cloudy with a chance of flurries. Windy at times.
Morning Temperature: 22°F
Cloudy with a chance of flurries. Windy.
Afternoon Temperature: 23°F
Cloudy with flurries likely. Windy.
Evening Temperature: 22°F
Cloudy with a chance of flurries. Windy.





 

  [ Local Weather Report ]
De Kalb, IL 
4:55 AM  -8°F
 
 
Sycamore, IL 
4:55 AM  -8°F
 
 
Genoa, IL 
 
Rochelle, IL 
 
Sandwich, IL 
 
Plano, IL 
 
Batavia, IL 
4:52 AM  -6°F
 
 
Geneva, IL 
4:52 AM  -6°F
 
 
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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