COSTA MESA, CA 92626 Weather Forecast & Current Conditions

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SANTA ANA, CA
Current Weather

6:53 AM PDT SEP 22, 2026
Broken Clouds
70°F
Feels Like: 70°F
Dewpoint: 61°F
Rel. Hum.: 73%
Visibility: 10 miles
Wind: Calm
Pressure: 29.92 inches
Last 72 hours

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COSTA MESA, CA 92626
Weather Forecast

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TODAY
Partly cloudy this morning...becoming mostly sunny. Highs 75 to 80. Areas of winds west to 10 mph...becoming 10 to 15 mph this afternoon.
TONIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 63 to 66. Areas of winds west to 10 mph in the evening becoming light.
WEDNESDAY
Partly cloudy in the morning...becoming mostly sunny. Highs around 78 at the beaches to 80 to 83 farther inland and near higher coastal terrain. Light winds becoming southwest 10 mph in the afternoon.
WEDNESDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 64 to 68. Areas of winds south 10 mph in the evening becoming light.
THURSDAY
Mostly cloudy with patchy fog in the morning... Becoming mostly sunny. Highs 76 to 80 at the beaches to 80 to 84 farther inland and near higher coastal terrain. Light winds becoming west 10 mph in the afternoon.
THURSDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 65 to 68.
FRIDAY
Partly cloudy with patchy fog in the morning...becoming mostly sunny. Highs 79 to 82 at the beaches to 83 to 86 farther inland and near higher coastal terrain.
FRIDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 66 to 69.
SATURDAY
Partly cloudy. Highs 79 to 83 at the beaches to 84 to 88 farther inland and near higher coastal terrain.
SATURDAY NIGHT
Partly cloudy. Lows 65 to 68.
SUNDAY
Partly cloudy. Highs 76 to 79 at the beaches to 79 to 83 farther inland and near higher coastal terrain.
SUNDAY NIGHT
Partly cloudy. Lows 62 to 66.
MONDAY
Partly cloudy in the morning...becoming mostly sunny. Highs 75 to 78 at the beaches to 78 to 82 farther inland and near higher coastal terrain.

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 PM PDT  9/21/2026
Tuesday
22 SEP 2026
COSTA MESA, CA 92626 weather forecast Day 1, 0 hours 11 PM 67° 67° Partly Cloudy 1%

0% Thunder
( 1% severe)
SW   3 81% 61°
Low 63° COSTA MESA, CA 92626 weather forecast Day 1, 3 hours 2 AM 65° 65° Partly Cloudy SE   3 84% 60°
High 77° COSTA MESA, CA 92626 weather forecast Day 1, 6 hours 5 AM 64° 65° Partly Cloudy 1%

0% Thunder
( 0% severe)
ENE   3 90% 61°

Partly Cloudy



COSTA MESA, CA 92626 weather forecast Day 1, 9 hours 8 AM 67° 67° Mostly Cloudy NNE   1 78% 60°
COSTA MESA, CA 92626 weather forecast Day 1, 12 hours 11 AM 73° 73° Partly Cloudy 0%

0% Thunder
( 0% severe)
WSW   5 66% 61°
COSTA MESA, CA 92626 weather forecast Day 1, 15 hours 2 PM 77° 79° Clear WSW   10 60% 62°
COSTA MESA, CA 92626 weather forecast Day 1, 18 hours 5 PM 75° 75° Clear 0%

0% Thunder
( 0% severe)
WSW   12 64% 62°
COSTA MESA, CA 92626 weather forecast Day 1, 21 hours 8 PM 70° 70° Clear WSW   3 81% 64°
Wednesday
23 SEP 2026
COSTA MESA, CA 92626 weather forecast Day 2, 0 hours 11 PM 68° 68° Clear 0%

0% Thunder
( 0% severe)
  CALM 87% 64°
Low 66° COSTA MESA, CA 92626 weather forecast Day 2, 3 hours 2 AM 67° 67° Partly Cloudy   CALM 90% 64°
High 84° COSTA MESA, CA 92626 weather forecast Day 2, 6 hours 5 AM 66° 66° Partly Cloudy 0%

0% Thunder
( 0% severe)
  CALM 93% 64°

Partly Cloudy



COSTA MESA, CA 92626 weather forecast Day 2, 9 hours 8 AM 68° 68° Partly Cloudy   CALM 84% 63°
COSTA MESA, CA 92626 weather forecast Day 2, 12 hours 11 AM 78° 80° Partly Cloudy 0%

0% Thunder
( 1% severe)
  CALM 62% 64°
COSTA MESA, CA 92626 weather forecast Day 2, 15 hours 2 PM 84° 85° Clear WSW   7 51% 64°
COSTA MESA, CA 92626 weather forecast Day 2, 18 hours 5 PM 80° 82° Clear 0%

0% Thunder
( 1% severe)
SW   8 60% 65°
COSTA MESA, CA 92626 weather forecast Day 2, 21 hours 8 PM 72° 72° Clear S   7 84% 67°

SANTA ANA, CA extended weather forecast

Thursday
24 SEP 2026
Friday
25 SEP 2026
Saturday
26 SEP 2026
Sunday
27 SEP 2026
Monday
28 SEP 2026
Low 68° Low 69° Low 67° Low 67° Low 64°
High 80° High 83° High 82° High 79° High 84°
COSTA MESA, CA 92626 weather forecast Day 3 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
Mostly Cloudy
Partly Cloudy
1% Rain
Partly Cloudy
2% Rain
Partly Cloudy
4% Rain
Partly Cloudy
5% Rain
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