Costa Mesa, CA Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Costa Mesa, CA in one place.
Mostly sunny, with a high near 69. South wind 5 to 10 mph.
Local Weather Overview
This forecast page for Costa Mesa, CA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Jun 6, 2026 9:28 AM PDT.
The active forecast window currently covers Jun 7 to Jun 12, 2026 for Costa Mesa, CA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 7 to Jun 12, 2026
- Latest sync
- Jun 6, 2026 9:28 AM PDT
- Forecast office
- SGX
- Source
- NOAA / NWS
Daily Outlook
This Week in Costa Mesa
Wednesday looks like the warmest upcoming period in Costa Mesa at 73 degrees F.
Sunday Night is the coolest period ahead with temperatures near 61 degrees F.
The strongest winds are forecast for Sunday at about 5 to 10 mph S.
The forecast from Jun 7 through Jun 12 stays mostly dry.
Forecast Details
- Last updated
- Jun 6, 2026 9:28 AM PDT
- Coverage
- 7 days
- Time zone
- America/Los_Angeles
- Forecast office
- SGX
- Radar station
- KSOX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Partly cloudy, with a low around 61. South wind 5 to 10 mph.
Mostly sunny, with a high near 70. South wind 5 to 10 mph.
Mostly cloudy, with a low around 63.
Mostly sunny, with a high near 71.
Partly cloudy, with a low around 64.
Mostly sunny, with a high near 73.
Partly cloudy, with a low around 64.
Mostly sunny, with a high near 73.
Partly cloudy, with a low around 64.
Mostly sunny, with a high near 73.
Partly cloudy, with a low around 64.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday
Jun 7
|
Mostly Sunny
|
69°F |
5 to 10 mph
S
|
|
Sunday Night
Jun 7
|
Partly Cloudy
|
61°F |
5 to 10 mph
S
|
|
Monday
Jun 8
|
Mostly Sunny
|
70°F |
5 to 10 mph
S
|
|
Monday Night
Jun 8
|
Mostly Cloudy
|
63°F |
5 mph
S
|
|
Tuesday
Jun 9
|
Mostly Sunny
|
71°F |
5 to 10 mph
S
|
|
Tuesday Night
Jun 9
|
Partly Cloudy
|
64°F |
5 to 10 mph
S
|
|
Wednesday
Jun 10
|
Mostly Sunny
|
73°F |
10 mph
S
|
|
Wednesday Night
Jun 10
|
Partly Cloudy
|
64°F |
5 to 10 mph
S
|
|
Thursday
Jun 11
|
Mostly Sunny
|
73°F |
10 mph
S
|
|
Thursday Night
Jun 11
|
Partly Cloudy
|
64°F |
5 to 10 mph
S
|
|
Friday
Jun 12
|
Mostly Sunny
|
73°F |
5 to 10 mph
S
|
|
Friday Night
Jun 12
|
Partly Cloudy
|
64°F |
0 to 10 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Costa Mesa.
