Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
March megastorm: Blizzard, severe storms, dangerous winds. Get the forecast. Chevron right
Is a 'Super El Nino' brewing? Here's what forecasters are saying. Chevron right

Costa Mesa, CA

85°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Costa Mesa

California

85°
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
Costa Mesa, 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

3 PM

80°
RealFeel® 83°
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
Partly sunny
alerts

Heat Advisory

10:00 AM Thursday - 8:00 PM Friday

RealFeel Shade™77°

WindWSW 8 mph

Air QualityPoor

Max UV Index4.2 (Moderate)

Wind Gusts9 mph

Humidity24%

Indoor Humidity24% (Ideal Humidity)

Dew Point41° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover39%

Visibility10 mi

Cloud Ceiling33400 ft

4 PM

78°
RealFeel® 80°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Intermittent clouds
alerts

Heat Advisory

10:00 AM Thursday - 8:00 PM Friday

RealFeel Shade™76°

WindWSW 8 mph

Air QualityPoor

Max UV Index3.0 (Moderate)

Wind Gusts9 mph

Humidity29%

Indoor Humidity29% (Ideal Humidity)

Dew Point44° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover51%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

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

Heat Advisory

10:00 AM Thursday - 8:00 PM Friday

RealFeel Shade™74°

WindWSW 7 mph

Air QualityPoor

Max UV Index1.9 (Low)

Wind Gusts10 mph

Humidity34%

Indoor Humidity34% (Ideal Humidity)

Dew Point47° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover51%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

75°
RealFeel® 74°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Intermittent clouds
alerts

Heat Advisory

10:00 AM Thursday - 8:00 PM Friday

RealFeel Shade™74°

WindWSW 7 mph

Air QualityPoor

Max UV Index0.9 (Low)

Wind Gusts8 mph

Humidity39%

Indoor Humidity39% (Ideal Humidity)

Dew Point48° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover51%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

72°
RealFeel® 70°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Intermittent clouds
alerts

Heat Advisory

10:00 AM Thursday - 8:00 PM Friday

WindSW 6 mph

Air QualityPoor

Wind Gusts6 mph

Humidity46%

Indoor Humidity46% (Ideal Humidity)

Dew Point50° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover51%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

71°
RealFeel® 69°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindSSW 5 mph

Air QualityPoor

Wind Gusts6 mph

Humidity52%

Indoor Humidity52% (Ideal Humidity)

Dew Point52° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

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

WindS 5 mph

Air QualityPoor

Wind Gusts6 mph

Humidity58%

Indoor Humidity57% (Ideal Humidity)

Dew Point52° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover37%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

64°
RealFeel® 64°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Partly cloudy

WindS 6 mph

Air QualityPoor

Wind Gusts7 mph

Humidity65%

Indoor Humidity57% (Ideal Humidity)

Dew Point52° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

61°
RealFeel® 60°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Partly cloudy

WindS 6 mph

Air QualityPoor

Wind Gusts7 mph

Humidity73%

Indoor Humidity58% (Ideal Humidity)

Dew Point53° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

Further Ahead

Tomorrow

Sunday

Daily

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Winter Weather

March megastorm: Blizzard, severe storms, winds threaten 200 million

1 hour ago

Climate

What to know about the potential for a super El Niño later this year

1 day ago

Weather Forecasts

Summerlike heat dome to send Southwest temperatures soaring past 100 F

1 hour ago

Severe Weather

Grapefruit-sized hailstone may set state record

2 days ago

Astronomy

NASA says it’s ‘go’ for Artemis II launch on April 1

4 hours ago

 More Stories

Featured Stories

Weather News

Lightning strikes gas meter, sparking fire next to burn ban sign

7 hours ago

Winter Weather

Nine states had their warmest winter ever recorded

2 days ago

Weather News

'Doomsday fish' rescued after washing ashore in Mexico

1 day ago

Recreation

'Quicksand alert' issued at National Park Service site

2 days ago

Severe Weather

Why nighttime tornadoes are 2.5 times more deadly

3 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

...

...

...