Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Heat dome collapse to spark thunderstorms. Get the forecast. Chevron right
4th of July weather: Click for the forecast. Chevron right

Altadena, CA

69°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Altadena

California

69°
No results found.
Try searching for a city, zip code or point of interest.
Get Premium+
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
Altadena, CA Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day 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

10-Day

 Radar MinuteCast® Monthly Air Quality Health & Activities

Unlock extended 90-day forecasts

Activate Your Premium+ Subscription

Chevron right

July 3 - July 17

Fri 7/3

84° /61°
1%
Some low clouds early, then mostly sunny and nice

RealFeel®90°

RealFeel Shade™81°

Max UV Index12.0 (Extreme)

WindSSW 7 mph

Sat 7/4

83° /62°
0%
Nice with periods of clouds and sunshine

RealFeel®90°

RealFeel Shade™80°

Max UV Index12.0 (Extreme)

WindSSW 6 mph

Sun 7/5

82° /62°
1%
Nice with plenty of sun

RealFeel®89°

RealFeel Shade™79°

Max UV Index12.0 (Extreme)

WindSSW 7 mph

Mon 7/6

84° /61°
0%
Nice with plenty of sun

RealFeel®91°

RealFeel Shade™81°

Max UV Index12.0 (Extreme)

WindSSW 6 mph

Tue 7/7

88° /62°
1%
Plenty of sunshine

RealFeel®94°

RealFeel Shade™86°

Max UV Index12.0 (Extreme)

WindSSW 5 mph

Wed 7/8

91° /66°
1%
Plenty of sunshine

RealFeel®96°

RealFeel Shade™89°

Max UV Index12.0 (Extreme)

WindSSW 6 mph

Thu 7/9

89° /67°
1%
Plenty of sunshine

RealFeel®94°

RealFeel Shade™87°

Max UV Index12.0 (Extreme)

WindSSW 6 mph

Fri 7/10

87° /66°
0%
Plenty of sunshine

RealFeel®95°

RealFeel Shade™85°

Max UV Index12.0 (Extreme)

WindSSW 5 mph

Sat 7/11

89° /67°
0%
Plenty of sunshine

RealFeel®96°

RealFeel Shade™87°

Max UV Index12.0 (Extreme)

WindSSW 5 mph

Sun 7/12

90° /68°
0%
Plenty of sunshine

RealFeel®96°

RealFeel Shade™88°

Max UV Index12.0 (Extreme)

WindSSW 5 mph

Mon 7/13

93° /69°
1%
Mostly sunny and warm

RealFeel®98°

RealFeel Shade™90°

Max UV Index12.0 (Extreme)

WindWSW 5 mph

Tue 7/14

93° /69°
0%
Mostly sunny and warm

RealFeel®97°

RealFeel Shade™90°

Max UV Index12.0 (Extreme)

WindWSW 5 mph

Wed 7/15

94° /70°
0%
Mostly sunny and warm

RealFeel®97°

RealFeel Shade™92°

Max UV Index12.0 (Extreme)

WindSW 6 mph

Thu 7/16

91° /69°
20%
Warm with plenty of sun

RealFeel®99°

RealFeel Shade™90°

Max UV Index12.0 (Extreme)

WindWSW 1 mph

Fri 7/17

92° /68°
25%
Warm with times of clouds and sun

RealFeel®98°

RealFeel Shade™91°

Max UV Index8.0 (Very High)

WindSW 1 mph

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Weather Forecasts

Heat furnace to flip from eastern to western U.S. next week

7 hours ago

Weather News

America 250 events are being canceled, reshaped as heat dome grips US

4 hours ago

Weather Forecasts

Fourth of July week furnace: Dangerous heat dome for 250 million

4 hours ago
Live Blog

Live: World Cup 2026 weather updates

LATEST ENTRY

World Cup faces heat, storm risk into the weekend

4 hours ago

Severe Weather

Severe storms, flooding downpours to highlight collapse of heat dome

32 minutes ago

 More Stories

Featured Stories

Weather News

Texas Hill Country marks 1 year since deadly July 4 flood

3 hours ago

Weather News

What is the most American animal?

1 day ago

Weather News

Chicks fly from nest of famous California eagles Jackie and Shadow

3 days ago

Astronomy

A viral sunset and dueling meteor showers are coming in July

2 days ago

Recreation

Girl survives rabid bat attack after receiving lifesaving treatment

1 day ago
World North America United States California Altadena

Weather Near Altadena:

  • 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

...

...

...