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July 17th, 2026 :: 5:03 am CDT   

Local Weather Report for
Rock Falls
Illinois, United States

 Current Rock Falls Weather Conditions Updated July 17th at 3:56 am 
mist
Temperature:70°F Dew Point:66°F
Barometer:30.06 inHg Wind:N 11 Mph
Humidity:88.3% Visibility:0M
 
 Rock Falls Weather Forecast Summary  
 
Today
Jul 17th
Saturday
Jul 18th
Sunday
Jul 19th
Monday
Jul 20th
Tuesday
Jul 21st
Mostly Sunny Mostly Sunny Mostly Sunny Mix of Sun and Cloud Mostly Sunny
86°F
86°F
71°F
81°F
63°F
84°F
66°F
76°F
62°F
 
 Rock Falls Detailed Weather Forecast  
 
Friday, July 17th, 2026
Morning Temperature: 75°F
Sunny with a chance of showers or thundershowers.
Afternoon Temperature: 86°F
Mostly 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: 72°F
Mostly clear with a slight chance of showers or thundershowers.
Morning Temperature: 76°F
Mostly sunny. Chance of a thunderstorm. Windy at times.
Afternoon Temperature: 86°F
Sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 77°F
Mostly clear with a chance of showers or thundershowers.
Sunday, July 19th, 2026
Overnight Temperature: 65°F
Mostly clear.
Morning Temperature: 69°F
Sunny.
Afternoon Temperature: 80°F
Mostly sunny.
Evening Temperature: 73°F
Clear with cloudy periods.
Monday, July 20th, 2026
Overnight Temperature: 67°F
Clear with cloudy periods.
Morning Temperature: 72°F
Mostly sunny. Windy at times.
Afternoon Temperature: 83°F
A mix of cloud and sun. Chance of a thunderstorm. Windy at times.
Evening Temperature: 84°F
A mix of cloudy and clear skies with a chance of showers or thundershowers. Windy at times.
Tuesday, July 21st, 2026
Overnight Temperature: 76°F
Clear with cloudy periods with showers likely. Chance of a thunderstorm. Windy at times.
Morning Temperature: 69°F
Sunny with a chance of showers. Windy.
Afternoon Temperature: 73°F
Mostly sunny. Windy.
Evening Temperature: 65°F
Clear. Windy at times.
Wednesday, July 22nd, 2026
Overnight Temperature: 56°F
Mostly clear. Windy at times.
Morning Temperature: 59°F
Sunny. Windy at times.
Afternoon Temperature: 70°F
Sunny with cloudy periods. Windy at times.
Evening Temperature: 64°F
Clear.
Thursday, July 23rd, 2026
Overnight Temperature: 55°F
Clear.
Morning Temperature: 62°F
Sunny.
Afternoon Temperature: 75°F
Sunny.
Evening Temperature: 68°F
Clear. Slight chance of a thunderstorm.
Friday, July 24th, 2026
Overnight Temperature: 60°F
A mix of cloudy and clear skies.
Morning Temperature: 66°F
Cloudy with sunny periods. Windy at times.
Afternoon Temperature: 74°F
Mostly cloudy. Slight chance of a thunderstorm. Windy at times.
Evening Temperature: 70°F
Mostly clear. Chance of a thunderstorm.
Saturday, July 25th, 2026
Overnight Temperature: 63°F
Mostly clear.
Morning Temperature: 67°F
Mostly sunny. Slight chance of a thunderstorm.
Afternoon Temperature: 75°F
A mix of cloud and sun with a slight chance of showers or thundershowers.
Evening Temperature: 67°F
Clear with a slight chance of showers or thundershowers.





 

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This WeatherCity Weather Forecast for Rock Falls, 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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