| National Weather Service Forecast for:
Costa Mesa, CA Issued by: National Weather Service San Diego, CA |
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| Updated: Tue, 27-Oct-2026 1:16am PDT | ||||||||||||||||||||||||||||||||||||||||
| Costa Mesa | ||||||||||||||||||||||||||||||||||||||||
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| Overnight |
Patchy fog after 5am. Mostly clear, with a low around 58. East wind 0 to 5 mph. |
| Tuesday |
Patchy fog before 11am. Sunny, with a high near 75. Southeast wind 5 to 10 mph. |
| Tuesday Night |
Mostly cloudy, with a low around 57. Southeast wind around 5 mph. |
| Wednesday |
Mostly sunny, with a high near 74. Southeast wind around 5 mph. |
| Wednesday Night |
Mostly cloudy, with a low around 60. South wind 0 to 5 mph. |
| Thursday |
Mostly cloudy, with a high near 74. |
| Thursday Night |
Mostly cloudy, with a low around 62. |
| Friday |
A slight chance of rain showers after 11am. Partly sunny, with a high near 71. |
| Friday Night |
A chance of rain showers. Mostly cloudy, with a low around 58. |
| Saturday |
Rain showers likely. Mostly cloudy, with a high near 69. |
| Saturday Night |
Rain showers likely. Mostly cloudy, with a low around 58. |
| Sunday |
A chance of rain showers. Partly sunny, with a high near 70. |
| Sunday Night |
A slight chance of rain showers before 10pm. Partly cloudy, with a low around 56. |
| Monday |
Sunny, with a high near 74. |
Forecast from NOAA-NWS for Costa Mesa, CA.