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January 15th, 2026 :: 2:17 pm PST   

Local Weather Report for
Diamond Bar
California, United States

 Current Diamond Bar Weather Conditions Updated January 15th at 12:47 pm 
Temperature:81°F Dew Point:30°F
Barometer:30.04 inHg Wind:N 11 Mph
Humidity:15.9% Visibility:0M
 
 Diamond Bar Weather Forecast Summary  
 
Today
Jan 15th
Friday
Jan 16th
Saturday
Jan 17th
Sunday
Jan 18th
Monday
Jan 19th
Mostly Sunny Cloudy Cloudy Cloudy Cloudy
78°F
77°F
61°F
75°F
60°F
77°F
62°F
74°F
61°F
 
 Diamond Bar Detailed Weather Forecast  
 
Thursday, January 15th, 2026
Afternoon Temperature: 73°F
Sunny.
Evening Temperature: 65°F
Clear.
Friday, January 16th, 2026
Overnight Temperature: 61°F
Clear.
Morning Temperature: 73°F
Sunny.
Afternoon Temperature: 73°F
Sunny.
Evening Temperature: 64°F
Cloudy.
Saturday, January 17th, 2026
Overnight Temperature: 61°F
Cloudy.
Morning Temperature: 72°F
Cloudy.
Afternoon Temperature: 72°F
A mix of cloud and sun.
Evening Temperature: 65°F
Clear with cloudy periods.
Sunday, January 18th, 2026
Overnight Temperature: 62°F
Cloudy.
Morning Temperature: 73°F
Mostly sunny.
Afternoon Temperature: 73°F
Cloudy.
Evening Temperature: 65°F
A mix of cloudy and clear skies.
Monday, January 19th, 2026
Overnight Temperature: 61°F
Cloudy.
Morning Temperature: 71°F
Cloudy.
Afternoon Temperature: 71°F
Cloudy.
Evening Temperature: 64°F
Cloudy.
Tuesday, January 20th, 2026
Overnight Temperature: 62°F
Cloudy.
Morning Temperature: 69°F
Cloudy.
Afternoon Temperature: 68°F
A mix of cloud and sun.
Evening Temperature: 62°F
A mix of cloudy and clear skies.
Wednesday, January 21st, 2026
Overnight Temperature: 58°F
A mix of cloudy and clear skies.
Morning Temperature: 65°F
Cloudy.
Afternoon Temperature: 66°F
Cloudy.
Evening Temperature: 60°F
A mix of cloudy and clear skies.
Thursday, January 22nd, 2026
Overnight Temperature: 57°F
Clear with cloudy periods.
Morning Temperature: 64°F
Cloudy.
Afternoon Temperature: 63°F
Sunny.
Evening Temperature: 56°F
Clear with cloudy periods.
Friday, January 23rd, 2026
Overnight Temperature: 53°F
Cloudy.
Morning Temperature: 59°F
Sunny.
Afternoon Temperature: 64°F
Sunny with cloudy periods.
Evening Temperature: 62°F
Clear. Windy.





 

  [ Local Weather Report ]
Walnut, CA 
 
Pomona, CA 
12:47 PM  81°F
 
 
La Verne Bracket, CA 
12:47 PM  81°F
 
 
La Verne, CA 
12:47 PM  81°F
 
 
San Dimas, CA 
12:47 PM  81°F
 
 
Covina, CA 
 
Claremont, CA 
12:47 PM  81°F
 
 
Montclair, CA 
12:55 PM  79°F
 
 
Glendora, CA 
12:47 PM  81°F
 
 
La Puente, CA 
12:45 PM  84°F
 

 
This WeatherCity Weather Forecast for Diamond Bar, 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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