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January 17th, 2026 :: 7:40 am CST   

Local Weather Report for
Dekalb
Illinois, United States

 Current Dekalb Weather Conditions Updated January 17th at 6:55 am 
Temperature:10°F Dew Point:3°F
Barometer:29.89 inHg Wind:calm
Humidity:68.7% Visibility:0M
 
 Dekalb Weather Forecast Summary  
 
Today
Jan 17th
Sunday
Jan 18th
Monday
Jan 19th
Tuesday
Jan 20th
Wednesday
Jan 21st
Cloudy Cloudy Cloudy Cloudy Cloudy
17°F
18°F
9°F
5°F
-1°F
27°F
2°F
30°F
12°F
 
 Dekalb Detailed Weather Forecast  
 
Saturday, January 17th, 2026
Morning Temperature: 15°F
Cloudy. Windy at times.
Afternoon Temperature: 16°F
Cloudy with a slight chance of flurries. Windy at times.
Evening Temperature: 15°F
Cloudy with a slight chance of flurries. Windy at times.
Sunday, January 18th, 2026
Overnight Temperature: 9°F
Cloudy. Windy at times.
Morning Temperature: 14°F
Cloudy with a chance of flurries. Windy at times.
Afternoon Temperature: 18°F
Cloudy with a chance of flurries.
Evening Temperature: 15°F
Cloudy with a chance of flurries. Windy.
Monday, January 19th, 2026
Overnight Temperature: 2°F
Cloudy. Windy.
Morning Temperature: 1°F
Cloudy. Windy.
Afternoon Temperature: 2°F
Sunny. Windy at times.
Evening Temperature: 1°F
Clear. Windy at times.
Tuesday, January 20th, 2026
Overnight Temperature: 2°F
Clear. Windy at times.
Morning Temperature: 14°F
Cloudy. Windy at times.
Afternoon Temperature: 23°F
Cloudy. Windy at times.
Evening Temperature: 26°F
Cloudy. Windy.
Wednesday, January 21st, 2026
Overnight Temperature: 29°F
Cloudy. Windy.
Morning Temperature: 22°F
Cloudy. Windy.
Afternoon Temperature: 17°F
Cloudy. Windy at times.
Evening Temperature: 14°F
Cloudy. Windy at times.
Thursday, January 22nd, 2026
Overnight Temperature: 12°F
Cloudy.
Morning Temperature: 21°F
Sunny with cloudy periods. Windy at times.
Afternoon Temperature: 18°F
Sunny with cloudy periods.
Evening Temperature: 24°F
A mix of cloudy and clear skies. Windy at times.
Friday, January 23rd, 2026
Overnight Temperature: 19°F
Cloudy.
Morning Temperature: 15°F
Cloudy with a chance of flurries. Windy at times.
Afternoon Temperature: 10°F
Cloudy with a chance of flurries. Windy at times.
Evening Temperature: 5°F
A mix of cloudy and clear skies. Windy at times.
Saturday, January 24th, 2026
Overnight Temperature: 2°F
A mix of cloudy and clear skies. Windy at times.
Morning Temperature: 11°F
Cloudy with a slight chance of flurries. Windy at times.
Afternoon Temperature: 14°F
Cloudy with a chance of flurries. Windy at times.
Evening Temperature: 14°F
Cloudy with flurries likely.
Sunday, January 25th, 2026
Overnight Temperature: 11°F
A mix of cloudy and clear skies with a chance of flurries.
Morning Temperature: 13°F
Cloudy. Windy at times.
Afternoon Temperature: 8°F
Cloudy.
Evening Temperature: 7°F
Cloudy.





 

  [ Local Weather Report ]
De Kalb, IL 
6:55 AM  10°F
 
 
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6:55 AM  10°F
 
 
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6:52 AM  10°F
 
 
Geneva, IL 
6:52 AM  10°F
 
 
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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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