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July 26th, 2026 :: 1:49 pm CDT   

Local Weather Report for
De Kalb
Illinois, United States

 Current De Kalb Weather Conditions Updated July 26th at 12:55 pm 
Overcast
Temperature:84°F Dew Point:75°F
Barometer:29.95 inHg Wind:N 19 Mph
Humidity:74.5% Visibility:0M
 
 De Kalb Weather Forecast Summary  
 
Today
Jul 26th
Monday
Jul 27th
Tuesday
Jul 28th
Wednesday
Jul 29th
Thursday
Jul 30th
Mostly Sunny Thundershowers Mostly Sunny Sunny Mostly Sunny
86°F
88°F
68°F
81°F
64°F
81°F
61°F
79°F
62°F
 
 De Kalb Detailed Weather Forecast  
 
Sunday, July 26th, 2026
Afternoon Temperature: 84°F
Sunny with cloudy periods. Chance of a thunderstorm.
Evening Temperature: 80°F
Mostly clear. Chance of a thunderstorm.
Monday, July 27th, 2026
Overnight Temperature: 72°F
A mix of cloudy and clear skies with a few showers. Chance of a thunderstorm. Windy.
Morning Temperature: 73°F
Sunny with cloudy periods with showers likely. Slight chance of a thunderstorm. Windy at times.
Afternoon Temperature: 87°F
Sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 82°F
Clear. Chance of a thunderstorm.
Tuesday, July 28th, 2026
Overnight Temperature: 73°F
Clear with a chance of showers or thundershowers. Windy at times.
Morning Temperature: 72°F
Sunny. Slight chance of a thunderstorm. Windy at times.
Afternoon Temperature: 80°F
A mix of sun and cloud. Slight chance of a thunderstorm. Windy at times.
Evening Temperature: 67°F
Mostly clear. Windy at times.
Wednesday, July 29th, 2026
Overnight Temperature: 62°F
Clear.
Morning Temperature: 67°F
Sunny.
Afternoon Temperature: 80°F
Sunny.
Evening Temperature: 71°F
Clear.
Thursday, July 30th, 2026
Overnight Temperature: 63°F
Clear.
Morning Temperature: 68°F
Sunny.
Afternoon Temperature: 79°F
Mostly sunny.
Evening Temperature: 73°F
A mix of cloudy and clear skies. Slight chance of a thunderstorm.
Friday, July 31st, 2026
Overnight Temperature: 65°F
Mostly cloudy with showers likely.
Morning Temperature: 65°F
Cloudy with a few showers. Windy at times.
Afternoon Temperature: 68°F
A mix of cloud and sun with a few showers. Windy at times.
Evening Temperature: 68°F
A mix of cloudy and clear skies with a chance of showers.
Saturday, August 1st, 2026
Overnight Temperature: 64°F
Clear. Windy at times.
Morning Temperature: 62°F
A mix of cloud and sun. Windy at times.
Afternoon Temperature: 67°F
A mix of cloud and sun with a slight chance of showers. Windy at times.
Evening Temperature: 66°F
Clear with a slight chance of showers. Windy at times.
Sunday, August 2nd, 2026
Overnight Temperature: 64°F
A mix of clear and cloudy skies. Windy at times.
Morning Temperature: 66°F
A mix of sun and cloud. Windy at times.
Afternoon Temperature: 76°F
Mostly sunny. Windy at times.
Evening Temperature: 69°F
Clear.
Monday, August 3rd, 2026
Overnight Temperature: 63°F
Clear.
Morning Temperature: 70°F
Sunny.
Afternoon Temperature: 79°F
A mix of sun and cloud. Chance of a thunderstorm.
Evening Temperature: 75°F
Clear with cloudy periods. Chance of a thunderstorm.





 

  [ Local Weather Report ]
Dekalb, IL 
12:55 PM  84°F
Overcast
 
Sycamore, IL 
12:55 PM  84°F
Overcast
 
Genoa, IL 
 
Rochelle, IL 
12:55 PM  86°F
Overcast
 
Sandwich, IL 
 
Batavia, IL 
12:52 PM  88°F
Mostly Cloudy
 
Geneva, IL 
12:52 PM  88°F
Mostly Cloudy
 
Plano, IL 
 
Marengo, IL 
 
Aurora, IL 

 
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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