COSTA MESA, CA 92626 Weather Forecast & Current Conditions

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SANTA ANA, CA
Current Weather

7:53 AM PDT MAR 20, 2026
Clear
66°F
Feels Like: 66°F
Dewpoint: 57°F
Rel. Hum.: 73%
Visibility: 10 miles
Wind: Calm
Pressure: 29.97 inches
Last 72 hours

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COSTA MESA, CA 92626
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TODAY
Mostly sunny. Highs 77 to 82 at the beaches to 84 to 89 farther inland and near higher coastal terrain. Light winds becoming west 10 mph this afternoon.
TONIGHT
Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows 56 to 59. Areas of winds west to 10 mph in the evening becoming light.
SATURDAY
Partly cloudy with patchy fog in the morning... Becoming mostly sunny. Highs 73 to 77 at the beaches to 79 to 84 farther inland and near higher coastal terrain. Light winds becoming west 10 mph in the afternoon.
SATURDAY NIGHT
Partly cloudy in the evening...becoming mostly cloudy overnight with patchy fog. Lows around 57. Areas of winds west to 10 mph in the evening becoming light.
SUNDAY
Mostly cloudy with patchy fog in the morning...becoming partly cloudy. Highs 73 to 76 at the beaches to 77 to 82 farther inland and near higher coastal terrain. Light winds becoming southwest 10 mph in the afternoon.
SUNDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows around 57.
MONDAY
Partly cloudy with patchy fog in the morning...becoming mostly sunny. Highs around 75 at the beaches to 78 to 82 farther inland and near higher coastal terrain.
MONDAY NIGHT
Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows around 57.
TUESDAY
Partly cloudy with patchy fog in the morning... Becoming mostly sunny. Highs 75 to 78 at the beaches to 79 to 83 farther inland and near higher coastal terrain.
TUESDAY NIGHT
Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows around 58.
WEDNESDAY
Partly cloudy with patchy fog in the morning... Becoming mostly sunny. Highs around 77 at the beaches to 81 to 84 farther inland and near higher coastal terrain.
WEDNESDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows around 58.
THURSDAY
Partly cloudy in the morning...becoming mostly sunny. Highs 76 to 79 at the beaches to 81 to 85 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  4:00 PM PST  3/19/2026
Friday
20 MAR 2026
COSTA MESA, CA 92626 weather forecast Day 1, 0 hours 10 PM 68° 68° Clear 0%

0% Thunder
( 0% severe)
SSW   1 76% 60°
Low 61° COSTA MESA, CA 92626 weather forecast Day 1, 3 hours 1 AM 65° 65° Partly Cloudy   CALM 84% 60°
High 86° COSTA MESA, CA 92626 weather forecast Day 1, 6 hours 4 AM 62° 63° Partly Cloudy 0%

0% Thunder
( 0% severe)
  CALM 90% 59°

Partly Cloudy



COSTA MESA, CA 92626 weather forecast Day 1, 9 hours 7 AM 64° 66° Partly Cloudy   CALM 78% 57°
COSTA MESA, CA 92626 weather forecast Day 1, 12 hours 10 AM 77° 79° Clear 0%

0% Thunder
( 0% severe)
WSW   1 50% 57°
COSTA MESA, CA 92626 weather forecast Day 1, 15 hours 1 PM 83° 82° Clear SW   8 41% 57°
COSTA MESA, CA 92626 weather forecast Day 1, 18 hours 4 PM 79° 80° Clear 0%

0% Thunder
( 0% severe)
WSW   8 45% 56°
COSTA MESA, CA 92626 weather forecast Day 1, 21 hours 7 PM 71° 71° Clear SW   3 66% 59°
Saturday
21 MAR 2026
COSTA MESA, CA 92626 weather forecast Day 2, 0 hours 10 PM 67° 67° Partly Cloudy 0%

0% Thunder
( 0% severe)
SW   1 78% 60°
Low 60° COSTA MESA, CA 92626 weather forecast Day 2, 3 hours 1 AM 64° 66° Partly Cloudy   CALM 84% 59°
High 80° COSTA MESA, CA 92626 weather forecast Day 2, 6 hours 4 AM 60° 61° Partly Cloudy 0%

0% Thunder
( 0% severe)
  CALM 93% 58°

Partly Cloudy



COSTA MESA, CA 92626 weather forecast Day 2, 9 hours 7 AM 62° 63° Mostly Cloudy   CALM 81% 56°
COSTA MESA, CA 92626 weather forecast Day 2, 12 hours 10 AM 73° 73° Partly Cloudy 0%

0% Thunder
( 0% severe)
WSW   2 57% 57°
COSTA MESA, CA 92626 weather forecast Day 2, 15 hours 1 PM 78° 79° Partly Cloudy WSW   9 48% 57°
COSTA MESA, CA 92626 weather forecast Day 2, 18 hours 4 PM 75° 75° Partly Cloudy 0%

0% Thunder
( 0% severe)
WSW   8 50% 55°
COSTA MESA, CA 92626 weather forecast Day 2, 21 hours 7 PM 69° 69° Mostly Cloudy WSW   3 68% 58°

SANTA ANA, CA extended weather forecast

Sunday
22 MAR 2026
Monday
23 MAR 2026
Tuesday
24 MAR 2026
Wednesday
25 MAR 2026
Thursday
26 MAR 2026
Low 60° Low 63° Low 63° Low 64° Low 61°
High 78° High 79° High 81° High 78° High 80°
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
Overcast
1% Rain
Mostly Cloudy
3% Rain
Partly Cloudy
3% Rain
Partly Cloudy
3% Rain
Partly Cloudy
4% Rain
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