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July 16th, 2026 :: 12:10 pm CDT   

Local Weather Report for
Dekalb
Illinois, United States

 Current Dekalb Weather Conditions Updated July 16th at 10:55 am 
haze
Temperature:84°F Dew Point:73°F
Barometer:30.12 inHg Wind:calm
Humidity:70.1% Visibility:0M
 
 Dekalb Weather Forecast Summary  
 
Today
Jul 16th
Friday
Jul 17th
Saturday
Jul 18th
Sunday
Jul 19th
Monday
Jul 20th
Mostly Sunny Mostly Sunny Sunny Mostly Sunny Mostly Sunny
87°F
85°F
69°F
85°F
71°F
82°F
63°F
85°F
64°F
 
 Dekalb Detailed Weather Forecast  
 
Thursday, July 16th, 2026
Afternoon Temperature: 86°F
Sunny with a slight chance of showers or thundershowers.
Evening Temperature: 74°F
Mostly clear with a slight chance of showers.
Friday, July 17th, 2026
Overnight Temperature: 69°F
Mostly clear.
Morning Temperature: 75°F
Sunny. Chance of a thunderstorm.
Afternoon Temperature: 84°F
Sunny with a chance of showers or thundershowers.
Evening Temperature: 77°F
Mostly clear with a chance of showers or thundershowers.
Saturday, July 18th, 2026
Overnight Temperature: 71°F
Clear with a slight chance of showers or thundershowers.
Morning Temperature: 77°F
Sunny. Chance of a thunderstorm. Windy at times.
Afternoon Temperature: 85°F
Mostly sunny. Chance of a thunderstorm. Windy.
Evening Temperature: 76°F
Clear with a slight chance of showers or thundershowers. Windy at times.
Sunday, July 19th, 2026
Overnight Temperature: 64°F
Clear.
Morning Temperature: 70°F
Sunny.
Afternoon Temperature: 81°F
Sunny.
Evening Temperature: 73°F
Mostly clear.
Monday, July 20th, 2026
Overnight Temperature: 66°F
Clear with cloudy periods.
Morning Temperature: 69°F
A mix of cloud and sun.
Afternoon Temperature: 84°F
Mostly sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 80°F
Mostly clear with a chance of showers or thundershowers. Windy at times.
Tuesday, July 21st, 2026
Overnight Temperature: 62°F
Clear with a slight chance of showers. Windy.
Morning Temperature: 60°F
Mostly sunny. Windy at times.
Afternoon Temperature: 73°F
Sunny with cloudy periods.
Evening Temperature: 66°F
A mix of cloudy and clear skies.
Wednesday, July 22nd, 2026
Overnight Temperature: 58°F
Mostly clear.
Morning Temperature: 65°F
Mostly sunny.
Afternoon Temperature: 75°F
Sunny.
Evening Temperature: 68°F
Mostly clear.
Thursday, July 23rd, 2026
Overnight Temperature: 61°F
Clear.
Morning Temperature: 67°F
Mostly sunny.
Afternoon Temperature: 76°F
Mostly sunny.
Evening Temperature: 69°F
Clear with cloudy periods.
Friday, July 24th, 2026
Overnight Temperature: 64°F
A mix of cloudy and clear skies.
Morning Temperature: 69°F
Sunny.
Afternoon Temperature: 79°F
Sunny.
Evening Temperature: 73°F
Mostly clear. Slight chance of a thunderstorm.





 

  [ Local Weather Report ]
De Kalb, IL 
10:55 AM  84°F
haze
 
Sycamore, IL 
10:55 AM  84°F
haze
 
Genoa, IL 
 
Rochelle, IL 
10:55 AM  86°F
haze
 
Sandwich, IL 
 
Plano, IL 
 
Batavia, IL 
10:52 AM  84°F
Overcast haze
 
Geneva, IL 
10:52 AM  84°F
Overcast haze
 
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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