| National Weather Service Forecast for:
Costa Mesa CA Issued by: National Weather Service San Diego, CA |
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| Updated: 12:29 am PDT Jun 22, 2026 | ||||||||||||||||||
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| Overnight |
Mostly cloudy, with a low around 61. Calm wind. |
| Monday |
Mostly cloudy, then gradually becoming sunny, with a high near 73. Light and variable wind becoming west 5 to 10 mph in the morning. |
| Monday Night |
Increasing clouds, with a low around 61. Southwest wind 5 to 10 mph becoming light west in the evening. |
| Tuesday |
Mostly cloudy, then gradually becoming sunny, with a high near 76. Light and variable wind becoming southwest 5 to 10 mph in the morning. |
| Tuesday Night |
Partly cloudy, with a low around 63. Southwest wind around 5 mph becoming calm after midnight. |
| Wednesday |
Mostly cloudy, then gradually becoming sunny, with a high near 78. |
| Wednesday Night |
Partly cloudy, with a low around 63. |
| Thursday |
Mostly sunny, with a high near 76. |
| Thursday Night |
Increasing clouds, with a low around 62. |
| Friday |
Mostly cloudy, then gradually becoming sunny, with a high near 76. |
| Friday Night |
Increasing clouds, with a low around 62. |
| Saturday |
Mostly cloudy, then gradually becoming sunny, with a high near 75. |
| Saturday Night |
Increasing clouds, with a low around 62. |
| Sunday |
Cloudy through mid morning, then gradual clearing, with a high near 72. |
Forecast from NOAA-NWS for Costa Mesa CA.
