Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Explosive storm to impact 200 million, to evolve into blizzard in Midwest. Get the forecast. Chevron right
2 dead after tornadoes tear through Illinois, Indiana. Get the details. Chevron right

Costa Mesa, CA

91°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Costa Mesa

California

91°
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

2 PM

83°
RealFeel® 86°
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
Sunny
alerts

Heat Advisory

10:00 AM Thursday - 8:00 PM Friday

RealFeel Shade™80°

WindNW 8 mph

Air QualityPoor

Max UV Index5.0 (Moderate)

Wind Gusts17 mph

Humidity31%

Indoor Humidity31% (Ideal Humidity)

Dew Point49° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

3 PM

82°
RealFeel® 84°
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
Sunny
alerts

Heat Advisory

10:00 AM Thursday - 8:00 PM Friday

RealFeel Shade™79°

WindWNW 9 mph

Air QualityPoor

Max UV Index4.1 (Moderate)

Wind Gusts17 mph

Humidity29%

Indoor Humidity29% (Ideal Humidity)

Dew Point47° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

81°
RealFeel® 82°
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
Sunny
alerts

Heat Advisory

10:00 AM Thursday - 8:00 PM Friday

RealFeel Shade™78°

WindWNW 9 mph

Air QualityPoor

Max UV Index2.9 (Moderate)

Wind Gusts16 mph

Humidity30%

Indoor Humidity30% (Ideal Humidity)

Dew Point48° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

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

Heat Advisory

10:00 AM Thursday - 8:00 PM Friday

RealFeel Shade™76°

WindW 9 mph

Air QualityPoor

Max UV Index1.9 (Low)

Wind Gusts16 mph

Humidity33%

Indoor Humidity33% (Ideal Humidity)

Dew Point48° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

78°
RealFeel® 76°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Sunny
alerts

Heat Advisory

10:00 AM Thursday - 8:00 PM Friday

RealFeel Shade™76°

WindW 8 mph

Air QualityPoor

Max UV Index0.9 (Low)

Wind Gusts13 mph

Humidity37%

Indoor Humidity37% (Ideal Humidity)

Dew Point49° F

AccuLumen Brightness Index™5 (Medium)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

74°
RealFeel® 72°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Clear
alerts

Heat Advisory

10:00 AM Thursday - 8:00 PM Friday

WindW 6 mph

Air QualityPoor

Wind Gusts9 mph

Humidity43%

Indoor Humidity43% (Ideal Humidity)

Dew Point50° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

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
Clear
alerts

Heat Advisory

10:00 AM Thursday - 8:00 PM Friday

WindWNW 5 mph

Air QualityPoor

Wind Gusts6 mph

Humidity49%

Indoor Humidity49% (Ideal Humidity)

Dew Point51° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

68°
RealFeel® 66°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Clear
alerts

Heat Advisory

10:00 AM Thursday - 8:00 PM Friday

WindWNW 5 mph

Air QualityPoor

Wind Gusts6 mph

Humidity54%

Indoor Humidity54% (Ideal Humidity)

Dew Point51° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

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

Heat Advisory

10:00 AM Thursday - 8:00 PM Friday

WindW 5 mph

Air QualityPoor

Wind Gusts5 mph

Humidity60%

Indoor Humidity54% (Ideal Humidity)

Dew Point51° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

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

Heat Advisory

10:00 AM Thursday - 8:00 PM Friday

WindSSE 5 mph

Air QualityPoor

Wind Gusts5 mph

Humidity66%

Indoor Humidity53% (Ideal Humidity)

Dew Point50° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

Further Ahead

Tomorrow

Saturday

Daily

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Winter Weather

Explosive March storm to impact 200 million, feature Midwest blizzard

1 hour ago

Severe Weather

Severe weather outbreak turns deadly with EF3 tornado, record hail

5 hours ago

Severe Weather

Grapefruit-sized hailstone may set state record

1 day ago

Climate

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

4 hours ago

Weather Forecasts

Storms to dump heavy rain, snow on Washington as California bakes

1 hour ago

 More Stories

Featured Stories

Winter Weather

Nine states had their warmest winter ever recorded

1 day ago

Weather News

'Doomsday fish' rescued after washing ashore in Mexico

2 hours ago

Recreation

'Quicksand alert' issued at National Park Service site

1 day ago

Severe Weather

Why nighttime tornadoes are 2.5 times more deadly

2 days ago

Health

Produce from nation’s largest supplier contains ‘forever’ pesticides

21 hours 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

...

...

...