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January 19th, 2026 :: 3:22 pm PST   

Local Weather Report for
Ontario
California, United States

 Current Ontario Weather Conditions Updated January 19th at 1:53 pm 
Mostly Sunny
Temperature:75°F Dew Point:36°F
Barometer:29.98 inHg Wind:N 11 Mph
Humidity:23.7% Visibility:0M
 
 Ontario Weather Forecast Summary  
 
Today
Jan 19th
Tuesday
Jan 20th
Wednesday
Jan 21st
Thursday
Jan 22nd
Friday
Jan 23rd
Sunny Cloudy Cloudy Cloudy Mostly Sunny
77°F
76°F
60°F
71°F
60°F
65°F
57°F
68°F
55°F
 
 Ontario Detailed Weather Forecast  
 
Monday, January 19th, 2026
Afternoon Temperature: 73°F
Sunny.
Evening Temperature: 65°F
Clear.
Tuesday, January 20th, 2026
Overnight Temperature: 61°F
Clear.
Morning Temperature: 72°F
A mix of cloud and sun.
Afternoon Temperature: 72°F
A mix of cloud and sun.
Evening Temperature: 64°F
Cloudy.
Wednesday, January 21st, 2026
Overnight Temperature: 61°F
Cloudy.
Morning Temperature: 69°F
Cloudy.
Afternoon Temperature: 68°F
Cloudy.
Evening Temperature: 63°F
Cloudy.
Thursday, January 22nd, 2026
Overnight Temperature: 60°F
Cloudy.
Morning Temperature: 61°F
A mix of cloud and sun with a slight chance of showers.
Afternoon Temperature: 63°F
Sunny.
Evening Temperature: 58°F
Clear.
Friday, January 23rd, 2026
Overnight Temperature: 55°F
Mostly clear.
Morning Temperature: 64°F
Sunny.
Afternoon Temperature: 65°F
Sunny.
Evening Temperature: 59°F
Clear.
Saturday, January 24th, 2026
Overnight Temperature: 57°F
Clear.
Morning Temperature: 70°F
Sunny. Windy at times.
Afternoon Temperature: 67°F
Sunny. Windy.
Evening Temperature: 63°F
Clear. Windy.
Sunday, January 25th, 2026
Overnight Temperature: 60°F
Clear. Windy.
Morning Temperature: 68°F
Sunny. Windy at times.
Afternoon Temperature: 68°F
Sunny.
Evening Temperature: 60°F
Clear.
Monday, January 26th, 2026
Overnight Temperature: 57°F
Clear.
Morning Temperature: 69°F
Cloudy.
Afternoon Temperature: 69°F
A mix of cloud and sun.
Evening Temperature: 62°F
A mix of cloudy and clear skies.
Tuesday, January 27th, 2026
Overnight Temperature: 59°F
A mix of cloudy and clear skies.
Morning Temperature: 69°F
Cloudy.
Afternoon Temperature: 70°F
Cloudy.
Evening Temperature: 63°F
Cloudy.





 

  [ Local Weather Report ]
Rancho Cucamonga, CA 
1:53 PM  75°F
Mostly Sunny
 
Upland, CA 
1:55 PM  73°F
 
 
Chino, CA 
1:53 PM  79°F
Mostly Sunny
 
Montclair, CA 
1:55 PM  73°F
 
 
Claremont, CA 
1:47 PM  75°F
 
 
Fontana, CA 
 
Norco, CA 
1:56 PM  79°F
 
 
Pomona, CA 
1:47 PM  75°F
 
 
La Verne Bracket, CA 
1:47 PM  75°F
 
 
La Verne, CA 
1:47 PM  75°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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