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September 18th, 2025 :: 11:54 am CDT   

Local Weather Report for
De Kalb
Illinois, United States

 Current De Kalb Weather Conditions Updated September 18th at 10:55 am 
Temperature:79°F Dew Point:59°F
Barometer:30.09 inHg Wind:N 13 Mph
Humidity:50.7% Visibility:0M
 
 De Kalb Weather Forecast Summary  
 
Today
Sep 18th
Friday
Sep 19th
Saturday
Sep 20th
Sunday
Sep 21st
Monday
Sep 22nd
Cloudy Showers Thundershowers Showers Thundershowers
84°F
83°F
61°F
79°F
63°F
72°F
61°F
79°F
63°F
 
 De Kalb Detailed Weather Forecast  
 
Thursday, September 18th, 2025
Afternoon Temperature: 79°F
A mix of sun and cloud. Slight chance of a thunderstorm.
Evening Temperature: 64°F
Clear with cloudy periods. Windy at times.
Friday, September 19th, 2025
Overnight Temperature: 61°F
Clear.
Morning Temperature: 79°F
Cloudy.
Afternoon Temperature: 72°F
Cloudy. Windy at times.
Evening Temperature: 65°F
Cloudy with showers likely.
Saturday, September 20th, 2025
Overnight Temperature: 63°F
Cloudy with a few showers.
Morning Temperature: 74°F
Cloudy with a chance of showers or thundershowers. Windy at times.
Afternoon Temperature: 74°F
Cloudy with a chance of showers or thundershowers. Windy at times.
Evening Temperature: 64°F
Cloudy with a chance of showers.
Sunday, September 21st, 2025
Overnight Temperature: 62°F
Cloudy with a slight chance of showers. Windy at times.
Morning Temperature: 71°F
Cloudy with showers likely. Windy at times.
Afternoon Temperature: 65°F
Cloudy with a few showers. Windy at times.
Evening Temperature: 65°F
Cloudy with showers likely. Windy at times.
Monday, September 22nd, 2025
Overnight Temperature: 64°F
Cloudy with a few showers. Windy at times.
Morning Temperature: 75°F
Cloudy with a slight chance of showers or thundershowers. Windy at times.
Afternoon Temperature: 72°F
Cloudy with rain. Chance of a thunderstorm.
Evening Temperature: 63°F
Cloudy with a chance of showers.
Tuesday, September 23rd, 2025
Overnight Temperature: 63°F
Cloudy with a chance of showers. Windy at times.
Morning Temperature: 70°F
Cloudy. Slight chance of a thunderstorm.
Afternoon Temperature: 73°F
Cloudy with a slight chance of showers or thundershowers.
Evening Temperature: 64°F
Cloudy with a few showers.
Wednesday, September 24th, 2025
Overnight Temperature: 64°F
Cloudy with showers.
Morning Temperature: 65°F
Cloudy.
Afternoon Temperature: 65°F
Cloudy with a chance of showers. Slight chance of a thunderstorm.
Evening Temperature: 60°F
Cloudy with showers likely. Slight chance of a thunderstorm.
Thursday, September 25th, 2025
Overnight Temperature: 56°F
A mix of cloudy and clear skies.
Morning Temperature: 64°F
Cloudy. Windy at times.
Afternoon Temperature: 61°F
Cloudy with a chance of showers.
Evening Temperature: 58°F
Cloudy with a chance of showers.
Friday, September 26th, 2025
Overnight Temperature: 57°F
Cloudy with showers likely.
Morning Temperature: 65°F
A mix of cloud and sun. Windy at times.
Afternoon Temperature: 64°F
Sunny with cloudy periods with a chance of showers.
Evening Temperature: 58°F
Clear.





 

  [ Local Weather Report ]
Dekalb, IL 
10:55 AM  79°F
 
 
Sycamore, IL 
10:55 AM  79°F
 
 
Genoa, IL 
10:55 AM  79°F
 
 
Rochelle, IL 
10:55 AM  81°F
 
 
Sandwich, IL 
10:52 AM  81°F
 
 
Batavia, IL 
10:52 AM  81°F
 
 
Geneva, IL 
10:52 AM  81°F
 
 
Plano, IL 
10:52 AM  81°F
 
 
Marengo, IL 
 
Aurora, IL 
10:52 AM  81°F
 

This WeatherCity Weather Forecast for De Kalb, 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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