COSTA MESA, CA 92626 Weather Forecast & Current Conditions

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SANTA ANA, CA
Current Weather

11:53 PM PDT MAY 18, 2026
Clear
63°F
Feels Like: 64°F
Dewpoint: 54°F
Rel. Hum.: 72%
Visibility: 10 miles
Wind: E at 3 mph
Pressure: 29.95 inches
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COSTA MESA, CA 92626
Weather Forecast

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TONIGHT
Partly cloudy. Patchy fog overnight. Lows 53 to 57. Areas of winds south to 10 mph.
TUESDAY
Partly cloudy in the morning...becoming mostly sunny. Highs 72 to 75 at the beaches to 77 to 81 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.
TUESDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 56 to 59. Areas of winds south 10 to 15 mph. Gusts to 25 mph in the evening.
WEDNESDAY
Partly cloudy. Highs 72 to 75 at the beaches to 77 to 81 farther inland and near higher coastal terrain. Areas of winds south 10 mph.
WEDNESDAY NIGHT
Partly cloudy. Patchy fog overnight. Lows 56 to 59. Areas of winds south 10 to 15 mph. Gusts to 25 mph in the evening.
THURSDAY
Cloudy in the morning...becoming mostly cloudy. Highs 70 to 73 at the beaches to 74 to 78 farther inland and near higher coastal terrain.
THURSDAY NIGHT
Mostly clear. Lows 55 to 58.
FRIDAY
Partly cloudy. Highs around 70 at the beaches to 71 to 75 farther inland and near higher coastal terrain.
FRIDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 54 to 58.
SATURDAY
Partly cloudy. Highs 68 to 73.
SATURDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 54 to 58.
SUNDAY
Partly cloudy. Highs around 70 at the beaches to 70 to 74 farther inland and near higher coastal terrain.
SUNDAY NIGHT
Clear in the evening...becoming partly cloudy. Lows 55 to 58.

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  5/18/2026
Tuesday
19 MAY 2026
COSTA MESA, CA 92626 weather forecast Day 1, 0 hours 11 PM 61° 60° Clear 0%

0% Thunder
( 0% severe)
SSE   7 84% 56°
Low 56° COSTA MESA, CA 92626 weather forecast Day 1, 3 hours 2 AM 59° 60° Clear   CALM 87% 55°
High 78° COSTA MESA, CA 92626 weather forecast Day 1, 6 hours 5 AM 57° 58° Clear 0%

0% Thunder
( 0% severe)
  CALM 90% 54°

Clear



COSTA MESA, CA 92626 weather forecast Day 1, 9 hours 8 AM 63° 64° Clear   CALM 70% 53°
COSTA MESA, CA 92626 weather forecast Day 1, 12 hours 11 AM 73° 73° Clear 0%

0% Thunder
( 0% severe)
SW   7 48% 52°
COSTA MESA, CA 92626 weather forecast Day 1, 15 hours 2 PM 77° 78° Clear WSW   12 42% 52°
COSTA MESA, CA 92626 weather forecast Day 1, 18 hours 5 PM 76° 78° Clear 0%

0% Thunder
( 0% severe)
WSW   12 40% 50°
COSTA MESA, CA 92626 weather forecast Day 1, 21 hours 8 PM 69° 69° Clear SW   7 47% 48°
Wednesday
20 MAY 2026
COSTA MESA, CA 92626 weather forecast Day 2, 0 hours 11 PM 64° 64° Clear 0%

0% Thunder
( 0% severe)
S   8 67% 53°
Low 60° COSTA MESA, CA 92626 weather forecast Day 2, 3 hours 2 AM 61° 62° Partly Cloudy SSE   3 78% 54°
High 78° COSTA MESA, CA 92626 weather forecast Day 2, 6 hours 5 AM 60° 61° Partly Cloudy 0%

0% Thunder
( 0% severe)
  CALM 78% 53°

Partly Cloudy



COSTA MESA, CA 92626 weather forecast Day 2, 9 hours 8 AM 64° 66° Partly Cloudy   CALM 67% 53°
COSTA MESA, CA 92626 weather forecast Day 2, 12 hours 11 AM 73° 73° Partly Cloudy 0%

0% Thunder
( 0% severe)
SSW   8 51% 54°
COSTA MESA, CA 92626 weather forecast Day 2, 15 hours 2 PM 76° 78° Partly Cloudy SW   10 45% 53°
COSTA MESA, CA 92626 weather forecast Day 2, 18 hours 5 PM 75° 75° Clear 0%

0% Thunder
( 0% severe)
SW   9 45% 52°
COSTA MESA, CA 92626 weather forecast Day 2, 21 hours 8 PM 68° 68° Partly Cloudy S   8 59% 53°

SANTA ANA, CA extended weather forecast

Thursday
21 MAY 2026
Friday
22 MAY 2026
Saturday
23 MAY 2026
Sunday
24 MAY 2026
Monday
25 MAY 2026
Low 60° Low 60° Low 60° Low 61° Low 60°
High 74° High 72° High 72° High 72° High 73°
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
Partly Cloudy
1% Rain
Mostly Cloudy
1% Rain
Mostly Cloudy
1% Rain
Overcast
1% Rain
Overcast
3% Rain
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