Costa Mesa, California Weather
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Weather Forecast for Costa Mesa, California : Orange County
Issued: 2:03 am PDT Oct 18, 2025 Latitude: 33.6411316 Longitude: -117.9186689 View on Google Maps

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Today Tonight Sunday Monday Tuesday Wednesday Thursday Friday
Sunny on Today Mostly Clear on Tonight Sunny on Sunday Morning Fog on Monday Mostly Cloudy on Tuesday Mostly Cloudy on Wednesday Mostly Sunny on Thursday Mostly Sunny on Friday
High: 78°F Low: 59°F High: 76°F High: 76°F High: 73°F High: 69°F High: 71°F High: 73°F
Low: 58°F Low: 58°F Low: 59°F Low: 57°F Low: 59°F  
Sunny Mostly Clear Sunny Morning Fog Mostly Cloudy Mostly Cloudy Mostly Sunny Mostly Sunny
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Sunny on Today Today... Sunny, with a high near 78. Calm wind becoming southwest around 5 mph in the afternoon.
Mostly Clear on Tonight Tonight... Mostly clear, with a low around 59. South wind around 5 mph becoming calm after midnight.
Sunny on Sunday Sunday... Sunny, with a high near 76. Calm wind becoming southwest around 5 mph in the afternoon.
Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 58. West wind around 5 mph becoming calm in the evening.
Morning Fog on Monday Monday... Patchy fog before 11am. Otherwise, mostly sunny, with a high near 76. Calm wind becoming west around 5 mph in the afternoon.
Increasing Clouds on Monday Night Monday Night... Increasing clouds, with a low around 58.
Mostly Cloudy on Tuesday Tuesday... Mostly cloudy, then gradually becoming sunny, with a high near 73.
Increasing Clouds on Tuesday Night Tuesday Night... Increasing clouds, with a low around 59.
Mostly Cloudy on Wednesday Wednesday... Mostly cloudy, then gradually becoming sunny, with a high near 69.
Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 57.
Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 71.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 59.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 73.
Sun Almanac for Costa Mesa, California
Sunrise: 06:59 AM
Sunset: 6:14 PM
Civil Sunrise:06:34 AM
Civil Sunset: 6:39 PM
Nautical Sunrise: 06:05 AM
Nautical Sunset: 7:08 PM
Astro Sunrise: 05:36 AM
Astro Sunset: 7:37 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.