| National Weather Service Forecast for:
Costa Mesa, CA Issued by: National Weather Service San Diego, CA |
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| Updated: Fri, 12-Sep-2025 12:57pm PDT | ||||||||||||||||||||||||||||||||||||||||
| Costa Mesa | ||||||||||||||||||||||||||||||||||||||||
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| This Afternoon |
Sunny, with a high near 76. Southwest wind around 10 mph. |
| Tonight |
Mostly cloudy, with a low around 64. South wind around 5 mph. |
| Saturday |
Mostly sunny, with a high near 77. South wind 5 to 10 mph. |
| Saturday Night |
Mostly cloudy, with a low around 64. South wind 0 to 5 mph. |
| Sunday |
Mostly sunny, with a high near 78. South wind 0 to 10 mph. |
| Sunday Night |
Patchy fog after 11pm. Partly cloudy, with a low around 64. |
| Monday |
Patchy fog before 11am. Mostly sunny, with a high near 80. |
| Monday Night |
Patchy fog after 11pm. Partly cloudy, with a low around 64. |
| Tuesday |
Patchy fog before 11am. Mostly sunny, with a high near 82. |
| Tuesday Night |
Patchy fog after 11pm. Partly cloudy, with a low around 66. |
| Wednesday |
Patchy fog before 11am. Partly sunny, with a high near 84. |
| Wednesday Night |
Patchy fog after 11pm. Mostly cloudy, with a low around 67. |
| Thursday |
Patchy fog before 11am. Mostly sunny, with a high near 83. |
| Thursday Night |
Patchy fog after 11pm. Partly cloudy, with a low around 67. |
Forecast from NOAA-NWS for Costa Mesa, CA.