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Costa Mesa, CA

80°F
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Costa Mesa

California

80°
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Costa Mesa, CA Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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6 PM

76°
RealFeel® 79°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny
alerts

Extreme Heat Warning

10:00 AM Friday - 8:00 PM Sunday
alerts

Coastal Flood Advisory

5:00 PM Wednesday - 3:00 AM Saturday
alerts

Heat Advisory

10:00 AM Friday - 8:00 PM Sunday
alerts

High Surf Advisory

5:00 PM Wednesday - 5:00 PM Saturday

RealFeel Shade™77°

WindWSW 9 mph

Air QualityPoor

Max UV Index1.8 (Low)

Wind Gusts16 mph

Humidity79%

Indoor Humidity79% (Very Humid)

Dew Point69° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover15%

Visibility10 mi

Cloud Ceiling33400 ft

7 PM

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

Extreme Heat Warning

10:00 AM Friday - 8:00 PM Sunday
alerts

Coastal Flood Advisory

5:00 PM Wednesday - 3:00 AM Saturday
alerts

Heat Advisory

10:00 AM Friday - 8:00 PM Sunday
alerts

High Surf Advisory

5:00 PM Wednesday - 5:00 PM Saturday

RealFeel Shade™78°

WindWSW 7 mph

Air QualityPoor

Max UV Index0.8 (Low)

Wind Gusts14 mph

Humidity78%

Indoor Humidity78% (Very Humid)

Dew Point68° F

AccuLumen Brightness Index™5 (Medium)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

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

Extreme Heat Warning

10:00 AM Friday - 8:00 PM Sunday
alerts

Coastal Flood Advisory

5:00 PM Wednesday - 3:00 AM Saturday
alerts

Heat Advisory

10:00 AM Friday - 8:00 PM Sunday
alerts

High Surf Advisory

5:00 PM Wednesday - 5:00 PM Saturday

WindWSW 7 mph

Air QualityPoor

Wind Gusts10 mph

Humidity78%

Indoor Humidity78% (Very Humid)

Dew Point67° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

73°
RealFeel® 73°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear
alerts

Extreme Heat Warning

10:00 AM Friday - 8:00 PM Sunday
alerts

Coastal Flood Advisory

5:00 PM Wednesday - 3:00 AM Saturday
alerts

Heat Advisory

10:00 AM Friday - 8:00 PM Sunday
alerts

High Surf Advisory

5:00 PM Wednesday - 5:00 PM Saturday

WindSW 6 mph

Air QualityFair

Wind Gusts8 mph

Humidity81%

Indoor Humidity81% (Very Humid)

Dew Point67° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

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

Extreme Heat Warning

10:00 AM Friday - 8:00 PM Sunday
alerts

Coastal Flood Advisory

5:00 PM Wednesday - 3:00 AM Saturday
alerts

Heat Advisory

10:00 AM Friday - 8:00 PM Sunday
alerts

High Surf Advisory

5:00 PM Wednesday - 5:00 PM Saturday

WindSW 6 mph

Air QualityFair

Wind Gusts6 mph

Humidity83%

Indoor Humidity83% (Very Humid)

Dew Point67° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

71°
RealFeel® 72°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear
alerts

Extreme Heat Warning

10:00 AM Friday - 8:00 PM Sunday
alerts

Coastal Flood Advisory

5:00 PM Wednesday - 3:00 AM Saturday
alerts

Heat Advisory

10:00 AM Friday - 8:00 PM Sunday
alerts

High Surf Advisory

5:00 PM Wednesday - 5:00 PM Saturday

WindSW 5 mph

Air QualityFair

Wind Gusts6 mph

Humidity85%

Indoor Humidity85% (Very Humid)

Dew Point67° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for Costa Mesa

AccuWeather's hourly forecast for Costa Mesa provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 76° with a RealFeel® of 79°, mostly sunny with a 0% chance of precipitation. Each hourly forecast includes wind speed, humidity, air quality, UV index, and the AccuLumen Brightness Index™, AccuWeather's measure of perceived outdoor light intensity. Forecasts are generated by proprietary systems developed by AccuWeather meteorologists since 1962.

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Weather Near Costa Mesa:

  • Anaheim, CA
  • Long Beach, CA
  • Los Angeles, CA
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