COSTA MESA, CA 92626 Weather Forecast & Current Conditions

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SANTA ANA, CA
Current Weather

9:53 AM PDT SEP 28, 2026
Scattered Clouds
73°F
Feels Like: 73°F
Dewpoint: 64°F
Rel. Hum.: 73%
Visibility: 10 miles
Wind: SSW at 3 mph
Pressure: 29.82 inches
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COSTA MESA, CA 92626
Weather Forecast

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Snow Depth pages
TODAY
Partly cloudy this morning...becoming sunny. Highs around 75 at the beaches to 76 to 79 farther inland and near higher coastal terrain. Light winds becoming southwest 10 to 15 mph with gusts to 25 mph this afternoon.
TONIGHT
Mostly clear. Lows 60 to 65. Areas of winds west 10 mph in the evening becoming light.
TUESDAY
Mostly sunny. Highs 78 to 83. Light winds becoming west 10 mph in the afternoon.
TUESDAY NIGHT
Clear in the evening...becoming partly cloudy. Lows 64 to 68. Areas of winds southwest 10 mph becoming southeast overnight.
WEDNESDAY
Partly cloudy in the morning...becoming mostly sunny. Highs around 80 at the beaches to 81 to 84 farther inland and near higher coastal terrain. Areas of winds southeast 10 mph becoming southwest in the afternoon.
WEDNESDAY NIGHT
Mostly clear. Lows 64 to 67.
THURSDAY
Partly cloudy with patchy fog in the morning... Becoming mostly sunny. Highs 81 to 84 at the beaches to 85 to 89 farther inland and near higher coastal terrain.
THURSDAY NIGHT
Mostly clear. Lows around 70.
FRIDAY
Partly cloudy in the morning...becoming mostly sunny. Highs 83 to 87 at the beaches to 87 to 92 farther inland and near higher coastal terrain.
FRIDAY NIGHT
Mostly clear. Lows around 71.
SATURDAY
Mostly sunny. Highs 83 to 88 at the beaches to 88 to 93 farther inland and near higher coastal terrain.
SATURDAY NIGHT
Clear. Lows 69 to 72.
SUNDAY
Mostly sunny. Highs 83 to 87 at the beaches to 88 to 92 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 AM PDT  9/28/2026
Monday
28 SEP 2026
COSTA MESA, CA 92626 weather forecast Day 1, 12 hours 11 AM 76° 78° Clear 0%

0% Thunder
( 0% severe)
SW   6 62% 62°
High 79° COSTA MESA, CA 92626 weather forecast Day 1, 15 hours 2 PM 78° 79° Clear SW   13 50% 58°
Clear



COSTA MESA, CA 92626 weather forecast Day 1, 18 hours 5 PM 75° 75° Clear 0%

0% Thunder
( 1% severe)
WSW   12 54% 57°
COSTA MESA, CA 92626 weather forecast Day 1, 21 hours 8 PM 69° 69° Clear SSW   3 70% 59°
Tuesday
29 SEP 2026
COSTA MESA, CA 92626 weather forecast Day 2, 0 hours 11 PM 67° 67° Clear 0%

0% Thunder
( 0% severe)
SSE   8 75% 59°
Low 64° COSTA MESA, CA 92626 weather forecast Day 2, 3 hours 2 AM 65° 65° Partly Cloudy ESE   6 78% 58°
High 82° COSTA MESA, CA 92626 weather forecast Day 2, 6 hours 5 AM 64° 65° Partly Cloudy 0%

0% Thunder
( 0% severe)
ESE   5 78% 57°

Partly Cloudy



COSTA MESA, CA 92626 weather forecast Day 2, 9 hours 8 AM 68° 68° Partly Cloudy SSE   6 65% 56°
COSTA MESA, CA 92626 weather forecast Day 2, 12 hours 11 AM 77° 79° Clear 0%

0% Thunder
( 0% severe)
WSW   5 50% 57°
COSTA MESA, CA 92626 weather forecast Day 2, 15 hours 2 PM 82° 82° Clear SW   12 43% 57°
COSTA MESA, CA 92626 weather forecast Day 2, 18 hours 5 PM 80° 81° Clear 0%

0% Thunder
( 0% severe)
WSW   12 47% 58°
COSTA MESA, CA 92626 weather forecast Day 2, 21 hours 8 PM 73° 73° Clear SSW   6 64% 60°
Wednesday
30 SEP 2026
COSTA MESA, CA 92626 weather forecast Day 3, 0 hours 11 PM 70° 70° Partly Cloudy 5%

0% Thunder
( 0% severe)
SSE   12 73% 61°
Low 68° COSTA MESA, CA 92626 weather forecast Day 3, 3 hours 2 AM 69° 69° Partly Cloudy SE   8 73% 60°
High 82° COSTA MESA, CA 92626 weather forecast Day 3, 6 hours 5 AM 68° 68° Partly Cloudy 0%

0% Thunder
( 0% severe)
SE   6 73% 59°

Partly Cloudy



COSTA MESA, CA 92626 weather forecast Day 3, 9 hours 8 AM 70° 70° Partly Cloudy SE   7 68% 59°
COSTA MESA, CA 92626 weather forecast Day 3, 15 hours 11 AM 79° 80° Partly Cloudy 0%

0% Thunder
( 0% severe)
S   7 52% 60°
COSTA MESA, CA 92626 weather forecast Day 3, 18 hours 2 PM 82° 83° Clear SSW   9 53% 63°
COSTA MESA, CA 92626 weather forecast Day 3, 21 hours 5 PM 79° 81° Clear     SSW   7 58% 63°

SANTA ANA, CA extended weather forecast

Thursday
1 OCT 2026
Friday
2 OCT 2026
Saturday
3 OCT 2026
Sunday
4 OCT 2026
Monday
5 OCT 2026
Low 67° Low 67° Low 68° Low 68° Low 70°
High 84° High 91° High 90° High 88° High 90°
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
Mostly Cloudy
Clear
Clear
Clear
3% Rain
Clear
5% Rain
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