Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
El Nino to play a major role this hurricane season. Here's how many storms AccuWeather experts are predicting. Chevron right

Diamond Bar, CA

87°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Diamond Bar

California

87°
No results found.
Try searching for a city, zip code or point of interest.
Create Your Account Unlock extended daily and hourly forecasts — all with your free account.
Let's Go Chevron right
Have an account already? Log In
settings
Help
Diamond Bar, CA Weather
Today WinterCast Local {stormName} Tracker Hourly Daily Radar MinuteCast® Monthly Air Quality Health & Activities

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps
News

News & Features

Astronomy

Business

Climate

Health

Recreation

Sports

Travel
For Business

Warnings

Data Suite

Forensics

Advertising

Superior Accuracy™

Video

Winter Center
Today

Hourly

 Daily Radar MinuteCast® Monthly Air Quality Health & Activities

View hourly forecasts 10-days ahead

Activate Your Premium+ Subscription

Chevron right

5 PM

85°
RealFeel® 85°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
rain drop 0%
Chevron down
Intermittent clouds

RealFeel Shade™82°

WindWSW 9 mph

Air QualityPoor

Max UV Index2.2 (Low)

Wind Gusts17 mph

Humidity23%

Indoor Humidity23% (Ideal Humidity)

Dew Point44° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover51%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

82°
RealFeel® 81°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Intermittent clouds

RealFeel Shade™79°

WindWSW 8 mph

Air QualityPoor

Max UV Index1.2 (Low)

Wind Gusts15 mph

Humidity24%

Indoor Humidity24% (Ideal Humidity)

Dew Point42° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover51%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

79°
RealFeel® 77°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Intermittent clouds

RealFeel Shade™77°

WindW 7 mph

Air QualityFair

Max UV Index0.1 (Low)

Wind Gusts14 mph

Humidity28%

Indoor Humidity28% (Ideal Humidity)

Dew Point43° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover51%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

76°
RealFeel® 74°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindWSW 6 mph

Air QualityFair

Wind Gusts9 mph

Humidity33%

Indoor Humidity33% (Ideal Humidity)

Dew Point45° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover15%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

73°
RealFeel® 71°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindWSW 5 mph

Air QualityFair

Wind Gusts6 mph

Humidity38%

Indoor Humidity38% (Ideal Humidity)

Dew Point46° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover16%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

71°
RealFeel® 68°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindSW 5 mph

Air QualityFair

Wind Gusts5 mph

Humidity43%

Indoor Humidity43% (Ideal Humidity)

Dew Point47° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover21%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

67°
RealFeel® 65°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindSSE 4 mph

Air QualityPoor

Wind Gusts4 mph

Humidity55%

Indoor Humidity52% (Ideal Humidity)

Dew Point50° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

Further Ahead

Tomorrow

Monday

Daily

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Weather Forecasts

Pacific storms to snap record heat wave in western U.S. next week

4 hours ago

Weather Forecasts

Windy, dry conditions to prompt fire risk in the central US

7 hours ago

Severe Weather

Severe weather risk to accompany next warmup in Midwest

4 hours ago

Hurricane

Atlantic hurricane season forecast 2026: 11-16 named storms predicted

3 days ago

Astronomy

April's back-to-back astronomy events include 1st meteor shower in mon...

1 day ago

 More Stories

Featured Stories

Economic Impact

Gas prices surge nearly $1 in a month as EV charging holds steady

1 day ago

Recreation

DC cherry blossoms reach peak bloom early

2 days ago

Astronomy

April’s full Pink moon rises April 1: Here’s when to watch

1 day ago

Astronomy

Artemis II: What to know about this historic moon mission

1 day ago

Astronomy

What’s behind the recent spike in meteor sightings across the US?

1 day ago
World North America United States California Diamond Bar

Weather Near Diamond Bar:

  • Anaheim, CA
  • Long Beach, CA
  • Los Angeles, CA
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
© 2026 AccuWeather, Inc. "AccuWeather" and sun design are registered trademarks of AccuWeather, Inc. All Rights Reserved.
Terms of Use | Privacy Policy | Cookie Policy | About Your Privacy Do Not Sell or Share My Personal Information | Data Sources

...

...

...