COSTA MESA, CA 92626 Weather Forecast & Current Conditions

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SANTA ANA, CA
Current Weather

8:53 PM PDT OCT 16, 2026
Clear
86°F
Feels Like: 83°F
Dewpoint: 43°F
Rel. Hum.: 22%
Visibility: 10 miles
Wind: NNE at 5 mph
Pressure: 29.96 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 around 73. Areas of winds east 10 to 15 mph with gusts to 30 mph becoming north with gusts to 25 mph overnight.
SATURDAY
Partly cloudy. Highs 85 to 88 at the beaches to 91 farther inland and near higher coastal terrain. Areas of winds northeast 10 to 15 mph with gusts to 25 mph becoming southwest in the afternoon.
SATURDAY NIGHT
Partly cloudy in the evening...becoming mostly clear. Lows 64 to 68. Areas of winds west to 10 mph in the evening becoming light.
SUNDAY
Partly cloudy in the morning...becoming mostly sunny. Highs 80 to 83 at the beaches to 84 to 87 farther inland and near higher coastal terrain. Light winds becoming southwest 10 mph in the afternoon.
SUNDAY NIGHT
Mostly clear. Lows 64 to 67. Areas of winds west to 10 mph in the evening becoming light.
MONDAY
Partly cloudy in the morning...becoming mostly sunny. Highs around 77 at the beaches to 79 to 82 farther inland and near higher coastal terrain.
MONDAY NIGHT
Mostly clear. Lows around 62.
TUESDAY
Partly cloudy. Highs 70 to 73.
TUESDAY NIGHT
Partly cloudy with a chance of showers. Lows around 60.
WEDNESDAY
Showers likely. Highs around 70.
WEDNESDAY NIGHT
Showers likely. Lows 56 to 59.
THURSDAY
Partly cloudy with a chance of showers. Highs 66 to 69.
THURSDAY NIGHT
Partly cloudy with a slight chance of showers. 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 AM PDT 10/16/2026
Friday
16 OCT 2026
COSTA MESA, CA 92626 weather forecast Day 1, 12 hours 11 AM 90° 87° Clear 1%

0% Thunder
( 0% severe)
ENE   18 25% 50°
High 96° COSTA MESA, CA 92626 weather forecast Day 1, 15 hours 2 PM 95° 92° Clear E   18 22% 50°
Clear




Breezy
COSTA MESA, CA 92626 weather forecast Day 1, 18 hours 5 PM 92° 89° Clear 2%

0% Thunder
( 1% severe)
E   15 22% 48°
COSTA MESA, CA 92626 weather forecast Day 1, 21 hours 8 PM 83° 81° Clear NNE   13 28% 47°
Saturday
17 OCT 2026
COSTA MESA, CA 92626 weather forecast Day 2, 0 hours 11 PM 79° 79° Clear 1%

0% Thunder
( 0% severe)
N   14 34% 48°
Low 73° COSTA MESA, CA 92626 weather forecast Day 2, 3 hours 2 AM 75° 75° Partly Cloudy NW   10 38% 48°
High 91° COSTA MESA, CA 92626 weather forecast Day 2, 6 hours 5 AM 74° 74° Partly Cloudy 2%

0% Thunder
( 0% severe)
WNW   8 40% 48°

Partly Cloudy



COSTA MESA, CA 92626 weather forecast Day 2, 9 hours 8 AM 75° 75° Partly Cloudy WNW   8 40% 49°
COSTA MESA, CA 92626 weather forecast Day 2, 12 hours 11 AM 88° 85° Partly Cloudy 2%

0% Thunder
( 0% severe)
SE   9 23% 46°
COSTA MESA, CA 92626 weather forecast Day 2, 15 hours 2 PM 89° 86° Mostly Cloudy SW   8 24% 48°
COSTA MESA, CA 92626 weather forecast Day 2, 18 hours 5 PM 85° 83° Partly Cloudy 0%

0% Thunder
( 0% severe)
WSW   7 28% 48°
COSTA MESA, CA 92626 weather forecast Day 2, 21 hours 8 PM 77° 78° Partly Cloudy   CALM 42% 52°
Sunday
18 OCT 2026
COSTA MESA, CA 92626 weather forecast Day 3, 0 hours 11 PM 73° 73° Clear 0%

0% Thunder
( 0% severe)
NNE   3 48% 52°
Low 68° COSTA MESA, CA 92626 weather forecast Day 3, 3 hours 2 AM 70° 70° Clear NNE   5 53% 52°
High 86° COSTA MESA, CA 92626 weather forecast Day 3, 6 hours 5 AM 68° 68° Partly Cloudy 0%

0% Thunder
( 0% severe)
NE   5 54% 51°

Partly Cloudy



COSTA MESA, CA 92626 weather forecast Day 3, 9 hours 8 AM 70° 70° Partly Cloudy ENE   5 49% 50°
COSTA MESA, CA 92626 weather forecast Day 3, 15 hours 11 AM 83° 81° Clear 0%

0% Thunder
( 0% severe)
  CALM 32% 50°
COSTA MESA, CA 92626 weather forecast Day 3, 18 hours 2 PM 85° 83° Clear WSW   9 31% 51°
COSTA MESA, CA 92626 weather forecast Day 3, 21 hours 5 PM 82° 81° Clear     W   9 35% 52°

SANTA ANA, CA extended weather forecast

Monday
19 OCT 2026
Tuesday
20 OCT 2026
Wednesday
21 OCT 2026
Thursday
22 OCT 2026
Friday
23 OCT 2026
Low 63° Low 63° Low 62° Low 62° Low 61°
High 77° High 75° High 72° High 73° High 73°
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
4% Rain
Overcast
14% Rain
Overcast
48% Rain
Overcast
59% Rain
Overcast
39% Rain
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