Costa Mesa, CA Weather Forecast
Local 7-day forecast
Chance Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Costa Mesa, CA in one place.
A chance of rain showers after 11pm. Mostly cloudy, with a low around 58. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
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: Apr 9, 2026 11:10 AM PDT.
The active forecast window currently covers Apr 10 to Apr 15, 2026 for Costa Mesa, CA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 10 to Apr 15, 2026
- Latest sync
- Apr 9, 2026 11:10 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 69 degrees F.
Sunday Night is the coolest period ahead with temperatures near 53 degrees F.
The strongest winds are forecast for Saturday at about 5 to 15 mph SW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 9, 2026 11:10 AM PDT
- Coverage
- 6 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
A slight chance of rain showers. Mostly sunny, with a high near 66. Southwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Rain showers likely before 5am, then showers and thunderstorms likely. Mostly cloudy, with a low around 58. Chance of precipitation is 70%.
Showers and thunderstorms likely before 5pm. Partly sunny, with a high near 64.
A chance of rain showers between 11pm and 5am. Partly cloudy, with a low around 53.
Sunny, with a high near 64.
Mostly clear, with a low around 53.
Sunny, with a high near 67.
Mostly clear, with a low around 54.
Mostly sunny, with a high near 69.
Mostly cloudy, with a low around 56.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday Night
Apr 10
|
Chance Rain Showers
|
58°F |
5 to 10 mph
W
|
|
Saturday
Apr 10
|
Slight Chance Rain Showers
|
66°F |
5 to 15 mph
SW
|
|
Saturday Night
Apr 11
|
Rain Showers Likely
|
58°F |
10 to 15 mph
W
|
|
Sunday
Apr 11
|
Showers And Thunderstorms Likely
|
64°F |
15 mph
W
|
|
Sunday Night
Apr 12
|
Chance Rain Showers
|
53°F |
10 to 15 mph
W
|
|
Monday
Apr 12
|
Sunny
|
64°F |
10 to 15 mph
W
|
|
Monday Night
Apr 13
|
Mostly Clear
|
53°F |
5 to 15 mph
W
|
|
Tuesday
Apr 13
|
Sunny
|
67°F |
5 to 10 mph
S
|
|
Tuesday Night
Apr 14
|
Mostly Clear
|
54°F |
5 to 10 mph
W
|
|
Wednesday
Apr 14
|
Mostly Sunny
|
69°F |
0 to 10 mph
SW
|
|
Wednesday Night
Apr 15
|
Mostly Cloudy
|
56°F |
5 to 10 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Costa Mesa.
