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January 12th, 2026 :: 8:55 am PST   

Local Weather Report for
Ontario
California, United States

 Current Ontario Weather Conditions Updated January 12th at 7:53 am 
Mostly Sunny
Temperature:48°F Dew Point:32°F
Barometer:30.24 inHg Wind:calm
Humidity:53.2% Visibility:0M
 
 Ontario Weather Forecast Summary  
 
Today
Jan 12th
Tuesday
Jan 13th
Wednesday
Jan 14th
Thursday
Jan 15th
Friday
Jan 16th
Mix of Cloud and Sun Sunny Sunny Cloudy Sunny
72°F
75°F
55°F
79°F
59°F
78°F
61°F
78°F
59°F
 
 Ontario Detailed Weather Forecast  
 
Monday, January 12th, 2026
Morning Temperature: 68°F
A mix of cloud and sun. Windy at times.
Afternoon Temperature: 67°F
Sunny.
Evening Temperature: 59°F
Clear.
Tuesday, January 13th, 2026
Overnight Temperature: 56°F
Clear.
Morning Temperature: 71°F
Sunny.
Afternoon Temperature: 70°F
Sunny.
Evening Temperature: 62°F
Clear.
Wednesday, January 14th, 2026
Overnight Temperature: 60°F
Clear.
Morning Temperature: 74°F
Sunny.
Afternoon Temperature: 74°F
Sunny.
Evening Temperature: 65°F
Clear.
Thursday, January 15th, 2026
Overnight Temperature: 61°F
Clear with cloudy periods.
Morning Temperature: 74°F
Cloudy.
Afternoon Temperature: 73°F
A mix of cloud and sun.
Evening Temperature: 64°F
A mix of clear and cloudy skies.
Friday, January 16th, 2026
Overnight Temperature: 60°F
Clear.
Morning Temperature: 73°F
Sunny.
Afternoon Temperature: 73°F
Sunny.
Evening Temperature: 63°F
Clear.
Saturday, January 17th, 2026
Overnight Temperature: 59°F
Clear.
Morning Temperature: 74°F
A mix of cloud and sun.
Afternoon Temperature: 73°F
Sunny.
Evening Temperature: 64°F
A mix of cloudy and clear skies.
Sunday, January 18th, 2026
Overnight Temperature: 61°F
Cloudy.
Morning Temperature: 73°F
Cloudy.
Afternoon Temperature: 73°F
Sunny with cloudy periods.
Evening Temperature: 64°F
Mostly clear.
Monday, January 19th, 2026
Overnight Temperature: 61°F
A mix of cloudy and clear skies.
Morning Temperature: 73°F
Cloudy.
Afternoon Temperature: 72°F
Cloudy.
Evening Temperature: 66°F
Cloudy.
Tuesday, January 20th, 2026
Overnight Temperature: 63°F
Cloudy.
Morning Temperature: 71°F
Cloudy.
Afternoon Temperature: 70°F
Sunny.
Evening Temperature: 62°F
A mix of cloudy and clear skies.





 

  [ Local Weather Report ]
Rancho Cucamonga, CA 
7:53 AM  48°F
Mostly Sunny
 
Upland, CA 
7:55 AM  55°F
 
 
Chino, CA 
7:53 AM  43°F
 
 
Montclair, CA 
7:55 AM  55°F
 
 
Claremont, CA 
7:47 AM  46°F
 
 
Fontana, CA 
 
Norco, CA 
7:56 AM  61°F
 
 
Pomona, CA 
7:47 AM  46°F
 
 
La Verne Bracket, CA 
7:47 AM  46°F
 
 
La Verne, CA 
7:47 AM  46°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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