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December 4th, 2025 :: 4:17 pm PST   

Local Weather Report for
Ontario
California, United States

 Current Ontario Weather Conditions Updated December 4th at 2:53 pm 
Mostly Clear
Temperature:66°F Dew Point:25°F
Barometer:30.12 inHg Wind:N 13 Mph
Humidity:20.7% Visibility:0M
 
 Ontario Weather Forecast Summary  
 
Today
Dec 4th
Friday
Dec 5th
Saturday
Dec 6th
Sunday
Dec 7th
Monday
Dec 8th
Cloudy Sunny Sunny Cloudy Mix of Cloud and Sun
67°F
68°F
55°F
68°F
55°F
71°F
57°F
76°F
58°F
 
 Ontario Detailed Weather Forecast  
 
Thursday, December 4th, 2025
Evening Temperature: 58°F
A mix of clear and cloudy skies.
Friday, December 5th, 2025
Overnight Temperature: 55°F
Clear.
Morning Temperature: 65°F
Sunny.
Afternoon Temperature: 64°F
Sunny.
Evening Temperature: 58°F
Clear.
Saturday, December 6th, 2025
Overnight Temperature: 56°F
Clear.
Morning Temperature: 65°F
Sunny.
Afternoon Temperature: 64°F
Sunny.
Evening Temperature: 59°F
Clear.
Sunday, December 7th, 2025
Overnight Temperature: 57°F
Clear.
Morning Temperature: 68°F
Sunny.
Afternoon Temperature: 68°F
Mostly sunny.
Evening Temperature: 62°F
Cloudy.
Monday, December 8th, 2025
Overnight Temperature: 59°F
Clear.
Morning Temperature: 72°F
Sunny.
Afternoon Temperature: 71°F
Mostly sunny.
Evening Temperature: 64°F
A mix of cloudy and clear skies.
Tuesday, December 9th, 2025
Overnight Temperature: 61°F
A mix of clear and cloudy skies.
Morning Temperature: 73°F
Sunny.
Afternoon Temperature: 72°F
A mix of cloud and sun.
Evening Temperature: 65°F
Clear.
Wednesday, December 10th, 2025
Overnight Temperature: 61°F
Clear.
Morning Temperature: 71°F
Sunny.
Afternoon Temperature: 69°F
Sunny.
Evening Temperature: 63°F
Clear.
Thursday, December 11th, 2025
Overnight Temperature: 60°F
Clear.
Morning Temperature: 69°F
Sunny.
Afternoon Temperature: 68°F
Sunny.
Evening Temperature: 62°F
Clear.
Friday, December 12th, 2025
Overnight Temperature: 60°F
Clear.
Morning Temperature: 69°F
Sunny.
Afternoon Temperature: 67°F
Sunny.
Evening Temperature: 61°F
Clear.





 

  [ Local Weather Report ]
Rancho Cucamonga, CA 
2:53 PM  66°F
Mostly Clear
 
Upland, CA 
 
Chino, CA 
2:53 PM  70°F
Mostly Clear
 
Montclair, CA 
 
Claremont, CA 
2:47 PM  66°F
 
 
Fontana, CA 
 
Norco, CA 
2:56 PM  70°F
 
 
Pomona, CA 
2:47 PM  66°F
 
 
La Verne Bracket, CA 
2:47 PM  66°F
 
 
La Verne, CA 
2:47 PM  66°F
 

 
This WeatherCity Weather Forecast for Ontario, California, 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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