Current Conditions
More Information
WeatherCity Home
Switch to Metric Units
[ Almanac ]  
Sunrise:  7:15 am
Sunset:  4:56 pm
[ Moon Phases ]  

First Quarter
Jan 26

Full Moon
Feb 3

Last Quarter
Feb 11

New Moon
Feb 18




January 20th, 2026 :: 11:07 am CST   

Local Weather Report for
Dekalb
Illinois, United States

 Current Dekalb Weather Conditions Updated January 20th at 9:55 am 
Temperature:9°F Dew Point:-0°F
Barometer:30.36 inHg Wind:calm
Humidity:60.3% Visibility:0M
 
 Dekalb Weather Forecast Summary  
 
Today
Jan 20th
Wednesday
Jan 21st
Thursday
Jan 22nd
Friday
Jan 23rd
Saturday
Jan 24th
Cloudy Flurries Mostly Sunny Cloudy Cloudy
19°F
28°F
18°F
17°F
-1°F
-6°F
-12°F
8°F
-6°F
 
 Dekalb Detailed Weather Forecast  
 
Tuesday, January 20th, 2026
Morning Temperature: 11°F
Sunny with cloudy periods. Windy at times.
Afternoon Temperature: 14°F
Cloudy.
Evening Temperature: 19°F
Cloudy.
Wednesday, January 21st, 2026
Overnight Temperature: 21°F
Cloudy with flurries likely.
Morning Temperature: 22°F
Cloudy. Windy at times.
Afternoon Temperature: 26°F
Cloudy. Windy.
Evening Temperature: 24°F
Clear with cloudy periods. Windy at times.
Thursday, January 22nd, 2026
Overnight Temperature: 15°F
Clear with cloudy periods. Windy at times.
Morning Temperature: 14°F
A mix of cloud and sun. Windy.
Afternoon Temperature: 9°F
Mostly sunny. Windy at times.
Evening Temperature: 2°F
Clear. Windy.
Friday, January 23rd, 2026
Overnight Temperature: -8°F
Cloudy. Windy at times.
Morning Temperature: -9°F
Sunny with cloudy periods. Windy at times.
Afternoon Temperature: -7°F
Sunny.
Evening Temperature: -7°F
Clear with cloudy periods.
Saturday, January 24th, 2026
Overnight Temperature: -6°F
Cloudy.
Morning Temperature: 3°F
Cloudy.
Afternoon Temperature: 6°F
Cloudy.
Evening Temperature: 3°F
Cloudy.
Sunday, January 25th, 2026
Overnight Temperature: 0°F
Clear with cloudy periods.
Morning Temperature: 6°F
Cloudy. Windy at times.
Afternoon Temperature: 3°F
Sunny.
Evening Temperature: 0°F
Clear.
Monday, January 26th, 2026
Overnight Temperature: 3°F
Clear. Windy at times.
Morning Temperature: 21°F
A mix of cloud and sun. Windy.
Afternoon Temperature: 23°F
Cloudy.
Evening Temperature: 19°F
Cloudy.
Tuesday, January 27th, 2026
Overnight Temperature: 14°F
Cloudy.
Morning Temperature: 19°F
Cloudy.
Afternoon Temperature: 19°F
Cloudy.
Evening Temperature: 16°F
Clear with cloudy periods.
Wednesday, January 28th, 2026
Overnight Temperature: 11°F
Clear. Windy at times.
Morning Temperature: 12°F
Sunny with cloudy periods. Windy at times.
Afternoon Temperature: 10°F
Sunny.
Evening Temperature: 7°F
Clear.





 

  [ Local Weather Report ]
De Kalb, IL 
9:55 AM  9°F
 
 
Sycamore, IL 
9:55 AM  9°F
 
 
Genoa, IL 
 
Rochelle, IL 
 
Sandwich, IL 
 
Plano, IL 
 
Batavia, IL 
9:52 AM  9°F
 
 
Geneva, IL 
9:52 AM  9°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

  Dekalb weather brought to you by WeatherCity Server: us-chi1   Rendered in 0.00289s  
Home   |   About WeatherCity