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Costa Mesa, CA

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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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4 PM

70°

RealFeel® 68°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

20%

Mostly cloudy

Coastal Flood Advisory

3:00 PM Sunday - 2:00 PM Tuesday

Beach Hazards Statement

6:00 AM Sunday - 10:00 PM Sunday

RealFeel Shade™68°

WindSW 10 mph

Air QualityFair

Max UV Index0.8 (Low)

Wind Gusts16 mph

Humidity68%

Indoor Humidity68% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover89%

Visibility10 mi

Cloud Ceiling3700 ft

5 PM

68°

RealFeel® 66°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

20%

Cloudy

Coastal Flood Advisory

3:00 PM Sunday - 2:00 PM Tuesday

Beach Hazards Statement

6:00 AM Sunday - 10:00 PM Sunday

RealFeel Shade™66°

WindSSW 9 mph

Air QualityFair

Max UV Index0.5 (Low)

Wind Gusts15 mph

Humidity70%

Indoor Humidity70% (Slightly Humid)

Dew Point58° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling3700 ft

6 PM

68°

RealFeel® 65°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

20%

Cloudy

Coastal Flood Advisory

3:00 PM Sunday - 2:00 PM Tuesday

Beach Hazards Statement

6:00 AM Sunday - 10:00 PM Sunday

RealFeel Shade™65°

WindSSW 8 mph

Air QualityFair

Max UV Index0.2 (Low)

Wind Gusts13 mph

Humidity70%

Indoor Humidity69% (Slightly Humid)

Dew Point58° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover91%

Visibility10 mi

Cloud Ceiling3700 ft

7 PM

67°

RealFeel® 64°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

25%

Cloudy

Coastal Flood Advisory

3:00 PM Sunday - 2:00 PM Tuesday

Beach Hazards Statement

6:00 AM Sunday - 10:00 PM Sunday

WindSSW 7 mph

Air QualityFair

Wind Gusts10 mph

Humidity74%

Indoor Humidity70% (Slightly Humid)

Dew Point58° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover93%

Visibility10 mi

Cloud Ceiling3700 ft

8 PM

66°

RealFeel® 64°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

49%

Cloudy

Coastal Flood Advisory

3:00 PM Sunday - 2:00 PM Tuesday

Beach Hazards Statement

6:00 AM Sunday - 10:00 PM Sunday

WindSW 7 mph

Air QualityFair

Wind Gusts8 mph

Humidity75%

Indoor Humidity71% (Slightly Humid)

Dew Point58° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling3700 ft

9 PM

66°

RealFeel® 61°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

58%

Showers

Coastal Flood Advisory

3:00 PM Sunday - 2:00 PM Tuesday

Beach Hazards Statement

6:00 AM Sunday - 10:00 PM Sunday

WindSW 7 mph

Air QualityFair

Wind Gusts8 mph

Humidity75%

Indoor Humidity70% (Slightly Humid)

Dew Point58° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover93%

Rain0.04 in

Visibility6 mi

Cloud Ceiling3700 ft

10 PM

66°

RealFeel® 61°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

53%

Showers

Coastal Flood Advisory

3:00 PM Sunday - 2:00 PM Tuesday

WindSW 7 mph

Air QualityFair

Wind Gusts8 mph

Humidity76%

Indoor Humidity70% (Slightly Humid)

Dew Point58° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover91%

Rain0.02 in

Visibility6 mi

Cloud Ceiling3700 ft

11 PM

66°

RealFeel® 63°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

24%

Cloudy

Coastal Flood Advisory

3:00 PM Sunday - 2:00 PM Tuesday

WindWSW 7 mph

Air QualityFair

Wind Gusts8 mph

Humidity77%

Indoor Humidity70% (Slightly Humid)

Dew Point58° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling3700 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 70° with a RealFeel® of 68°, mostly cloudy with a 20% 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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