Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Dolly to approach Caribbean as a tropical rainstorm. Click to see the forecast. Chevron right
Fall Foliage Forecast: See where vibrant colors are expected in autumn. Chevron right

Costa Mesa, CA

81°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Costa Mesa

California

81°
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
Costa Mesa, 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

August 30 - September 13

Sun 8/30

83° /69°
0%
Some low clouds early; otherwise, mostly sunny and humid; dangerously large waves, swells and rough surf to affect the area

RealFeel®99°

RealFeel Shade™90°

Max UV Index9.0 (Very High)

WindSW 7 mph

Mon 8/31

83° /66°
0%
Areas of low clouds early; otherwise, mostly sunny; dangerously large waves, swells and rough surf to affect the area

RealFeel®89°

RealFeel Shade™81°

Max UV Index8.0 (Very High)

WindSW 8 mph

Tue 9/1

83° /69°
1%
Mostly sunny

RealFeel®87°

RealFeel Shade™80°

Max UV Index8.0 (Very High)

WindW 8 mph

Wed 9/2

82° /67°
2%
Mostly sunny

RealFeel®87°

RealFeel Shade™79°

Max UV Index8.0 (Very High)

WindW 7 mph

Thu 9/3

80° /69°
2%
Mostly sunny

RealFeel®86°

RealFeel Shade™78°

Max UV Index8.0 (Very High)

WindSW 6 mph

Fri 9/4

74° /67°
3%
Mostly sunny and nice

RealFeel®82°

RealFeel Shade™72°

Max UV Index8.0 (Very High)

WindWSW 6 mph

Sat 9/5

71° /69°
25%
Pleasant with high thin cloudiness

RealFeel®79°

RealFeel Shade™71°

Max UV Index5.0 (Moderate)

WindSW 5 mph

Sun 9/6

77° /69°
1%
Brilliant sunshine

RealFeel®85°

RealFeel Shade™76°

Max UV Index8.0 (Very High)

WindSSE 6 mph

Mon 9/7

75° /70°
1%
Sun and areas of high clouds in the morning; mostly cloudy in the afternoon

RealFeel®83°

RealFeel Shade™76°

Max UV Index5.0 (Moderate)

WindSW 4 mph

Tue 9/8

76° /69°
0%
Times of clouds and sun

RealFeel®86°

RealFeel Shade™76°

Max UV Index8.0 (Very High)

WindWSW 6 mph

Wed 9/9

77° /68°
0%
Mostly sunny

RealFeel®87°

RealFeel Shade™77°

Max UV Index8.0 (Very High)

WindSSW 6 mph

Thu 9/10

74° /69°
0%
Plenty of sunshine

RealFeel®84°

RealFeel Shade™75°

Max UV Index8.0 (Very High)

WindS 5 mph

Fri 9/11

74° /65°
25%
Partly sunny

RealFeel®83°

RealFeel Shade™77°

Max UV Index5.0 (Moderate)

WindSW 1 mph

Sat 9/12

77° /68°
20%
Partial sunshine

RealFeel®85°

RealFeel Shade™77°

Max UV Index7.0 (High)

WindW 2 mph

Sun 9/13

78° /67°
20%
Partial sunshine

RealFeel®86°

RealFeel Shade™78°

Max UV Index7.0 (High)

WindW 2 mph

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Hurricane

Dolly to drench northern Caribbean, raise flood risk

43 minutes ago

Severe Weather

Illinois sets US state record for most tornadoes in a year

2 days ago

Hurricane

Dolly could regroup as US tropical threats unfold as Labor Day nears

47 minutes ago

Weather News

What caused the Nepal flood wave? Here’s what we know

3 days ago

Weather Forecasts

Heat to focus in Mississippi Valley, mid-Atlantic ahead of Labor Day

55 minutes ago

 More Stories

Featured Stories

Weather News

Hummingbirds are migrating south. This map shows when they will leave

3 days ago

Astronomy

NASA launches ‘discovery machine’ to unravel the invisible universe

7 hours ago

Weather News

Amazon rivers falling faster as El Niño intensifies

2 days ago

Health

As a measles outbreak escalates in Pennsylvania’s Amish Country

2 days ago

Climate

Global ocean heat breaks record months after its usual peak

4 days ago
World North America United States California Costa Mesa

Weather Near Costa Mesa:

  • 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

...

...

...