COSTA MESA, CA 92626 Weather Forecast & Current Conditions

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SANTA ANA, CA
Current Weather

11:53 AM PDT AUG 16, 2026
Few Clouds
77°F
Feels Like: 79°F
Dewpoint: 64°F
Rel. Hum.: 64%
Visibility: 10 miles
Wind: SW at 6 mph
Pressure: 30.07 inches
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COSTA MESA, CA 92626
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TONIGHT
Mostly clear this evening...becoming partly cloudy. Lows 64 to 67. Areas of winds west 10 to 15 mph with gusts to 25 mph this evening becoming light.
MONDAY
Partly cloudy in the morning...becoming mostly sunny. Highs 75 to 78 at the beaches to 80 to 84 farther inland and near higher coastal terrain. Areas of winds west to 10 mph...becoming 10 to 15 mph with gusts to 25 mph in the afternoon.
MONDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 64 to 68. Areas of winds west 10 to 15 mph in the evening becoming light.
TUESDAY
Partly cloudy in the morning...becoming mostly sunny. Highs 75 to 79 at the beaches to 81 to 85 farther inland and near higher coastal terrain. Light winds becoming southwest 10 mph in the afternoon.
TUESDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 64 to 68. Areas of winds southwest 10 mph in the evening becoming light.
WEDNESDAY
Partly cloudy with patchy fog in the morning... Becoming mostly sunny. Highs 77 to 81 at the beaches to 82 to 86 farther inland and near higher coastal terrain.
WEDNESDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 65 to 68.
THURSDAY
Partly cloudy. Highs 77 to 81 at the beaches to 83 to 88 farther inland and near higher coastal terrain.
THURSDAY NIGHT
Mostly clear. Lows 65 to 69.
FRIDAY
Partly cloudy. Highs 77 to 81 at the beaches to 83 to 88 farther inland and near higher coastal terrain.
FRIDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 65 to 69.
SATURDAY
Partly cloudy in the morning...becoming mostly sunny. Highs 77 to 81 at the beaches to 83 to 88 farther inland and near higher coastal terrain.
SATURDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 65 to 68.

Visible Weather Satellite
COSTA MESA, CA 92626
Infrared Weather Satellite
COSTA MESA, CA 92626
NEXRAD Weather Radar
COSTA MESA, CA 92626

SANTA ANA, CA 3 hourly weather forecast

weather forecast created  5:00 AM PDT  8/16/2026
Sunday
16 AUG 2026
COSTA MESA, CA 92626 weather forecast Day 1, 12 hours 11 AM 78° 80° Partly Cloudy 0%

0% Thunder
( 0% severe)
WSW   8 62% 64°
High 82° COSTA MESA, CA 92626 weather forecast Day 1, 15 hours 2 PM 81° 83° Clear WSW   13 56% 64°
Partly Cloudy



COSTA MESA, CA 92626 weather forecast Day 1, 18 hours 5 PM 79° 81° Clear 1%

0% Thunder
( 0% severe)
WSW   13 60% 64°
COSTA MESA, CA 92626 weather forecast Day 1, 21 hours 8 PM 72° 72° Partly Cloudy WSW   10 81% 66°
Monday
17 AUG 2026
COSTA MESA, CA 92626 weather forecast Day 2, 0 hours 11 PM 70° 70° Partly Cloudy 0%

0% Thunder
( 0% severe)
SW   7 87% 66°
Low 68° COSTA MESA, CA 92626 weather forecast Day 2, 3 hours 2 AM 69° 69° Mostly Cloudy SW   5 90% 66°
High 81° COSTA MESA, CA 92626 weather forecast Day 2, 6 hours 5 AM 68° 68° Mostly Cloudy 1%

0% Thunder
( 0% severe)
S   3 90% 65°

Mostly Cloudy



COSTA MESA, CA 92626 weather forecast Day 2, 9 hours 8 AM 70° 70° Mostly Cloudy SW   3 87% 66°
COSTA MESA, CA 92626 weather forecast Day 2, 12 hours 11 AM 78° 80° Partly Cloudy 1%

0% Thunder
( 0% severe)
WSW   7 64% 65°
COSTA MESA, CA 92626 weather forecast Day 2, 15 hours 2 PM 81° 83° Partly Cloudy WSW   12 56% 64°
COSTA MESA, CA 92626 weather forecast Day 2, 18 hours 5 PM 80° 82° Partly Cloudy 0%

0% Thunder
( 0% severe)
WSW   12 58% 64°
COSTA MESA, CA 92626 weather forecast Day 2, 21 hours 8 PM 73° 73° Partly Cloudy WSW   8 79% 66°
Tuesday
18 AUG 2026
COSTA MESA, CA 92626 weather forecast Day 3, 0 hours 11 PM 70° 70° Partly Cloudy 1%

0% Thunder
( 0% severe)
SW   6 87% 66°
Low 68° COSTA MESA, CA 92626 weather forecast Day 3, 3 hours 2 AM 69° 69° Partly Cloudy S   5 90% 66°
High 83° COSTA MESA, CA 92626 weather forecast Day 3, 6 hours 5 AM 68° 68° Mostly Cloudy 0%

0% Thunder
( 0% severe)
  CALM 90% 65°

Decreasing Clouds



COSTA MESA, CA 92626 weather forecast Day 3, 9 hours 8 AM 71° 71° Mostly Cloudy S   3 84% 66°
COSTA MESA, CA 92626 weather forecast Day 3, 15 hours 11 AM 79° 81° Partly Cloudy 0%

0% Thunder
( 0% severe)
SSW   5 64% 66°
COSTA MESA, CA 92626 weather forecast Day 3, 18 hours 2 PM 82° 84° Clear SW   8 55% 64°
COSTA MESA, CA 92626 weather forecast Day 3, 21 hours 5 PM 81° 83° Clear     WSW   9 56% 64°

SANTA ANA, CA extended weather forecast

Wednesday
19 AUG 2026
Thursday
20 AUG 2026
Friday
21 AUG 2026
Saturday
22 AUG 2026
Sunday
23 AUG 2026
Low 70° Low 70° Low 70° Low 70° Low 70°
High 84° High 84° High 86° High 84° High 85°
COSTA MESA, CA 92626 weather forecast Day 4 COSTA MESA, CA 92626 weather forecast Day 5 COSTA MESA, CA 92626 weather forecast Day 6 COSTA MESA, CA 92626 weather forecast Day 7 <!--SEARCHED_TOWN_NAME--> weather forecast Day 8
Partly Cloudy
1% Rain
Partly Cloudy
Partly Cloudy
Partly Cloudy
1% Rain
Partly Cloudy
3% Rain
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