| National Weather Service Forecast for:
Costa Mesa, CA Issued by: National Weather Service San Diego, CA |
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| Updated: Wed, 25-Mar-2026 1:18am PDT | ||||||||||||||||||||||||||||||||||||||||
| Costa Mesa | ||||||||||||||||||||||||||||||||||||||||
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| Overnight |
Cloudy, with a low around 58. Southwest wind around 0 mph. |
| Wednesday |
Mostly sunny, with a high near 75. West wind 0 to 10 mph. |
| Wednesday Night |
Mostly cloudy, with a low around 57. South wind 0 to 10 mph. |
| Thursday |
Mostly sunny, with a high near 78. West wind 0 to 10 mph, with gusts as high as 20 mph. |
| Thursday Night |
Patchy fog after 11pm. Partly cloudy, with a low around 58. Southwest wind 0 to 10 mph. |
| Friday |
Patchy fog before 11am. Mostly sunny, with a high near 80. |
| Friday Night |
Patchy fog after 11pm. Mostly cloudy, with a low around 58. |
| Saturday |
Patchy fog before 11am. Partly sunny, with a high near 82. |
| Saturday Night |
Partly cloudy, with a low around 58. |
| Sunday |
Sunny, with a high near 81. |
| Sunday Night |
Mostly cloudy, with a low around 57. |
| Monday |
Mostly cloudy, with a high near 76. |
| Monday Night |
Mostly cloudy, with a low around 57. |
| Tuesday |
Partly sunny, with a high near 73. |
Forecast from NOAA-NWS for Costa Mesa, CA.