Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Pollen levels may spike this year due to the weather. Read AccuWeather's allergy forecast for the U.S. Chevron right
Rounds of severe weather to ramp up later this week. Get the details. Chevron right

Diamond Bar, CA

51°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Diamond Bar

California

51°
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
Wednesday, March 4

Day

3/4
71°Hi
RealFeel® 73°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
RealFeel Shade™ 68°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
Mostly sunny and pleasant

Max UV Index5.0 (Moderate)

AccuLumen Brightness Index™9 (Very Bright)

WindSW 7 mph

Wind Gusts14 mph

Probability of Precipitation1%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover23%

Morning

Afternoon

Night

3/4
51°Lo
RealFeel® 50°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
Increasing cloudiness

WindWNW 5 mph

Wind Gusts7 mph

Probability of Precipitation1%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover55%

Evening

Overnight

Sun & Moon

11 hrs 34 mins
Rise 6:16 AM
Set 5:50 PM
Waning Gibbous
Rise 7:24 PM
Set 7:14 AM

Temperature History

3/4
High
Low
Forecast
71°
51°
Average
69°
46°
Last Year
71°
44°

Further Ahead

Hourly

Daily

Monthly

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Severe Weather

Severe storms to rumble in central US into this weekend

4 hours ago

Weather Forecasts

2026 Allergy Forecast: When will pollen be bad across the US?

3 hours ago

Weather Forecasts

Temperatures to surge to May-like levels in eastern US

4 hours ago

Recreation

Death Valley’s best superbloom since 2016 is here

18 minutes ago

Severe Weather

Flood risk to accompany rounds of severe weather in central US

4 hours ago

 More Stories

Featured Stories

Recreation

Yellowstone geyser erupts for 1st time since 2020

20 hours ago

Recreation

Helicopter rescue saves missing hiker with frostbite in Adirondacks

21 hours ago

Winter Weather

The fences that saved Wyoming big money and cut crashes by 70%

1 day ago

Travel

2 rescued after hot air balloon crashes, dangles from Texas cell tower

22 hours ago

Travel

United Airlines flight makes emergency landing over possible engine fi...

22 hours 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

...

...

...