I-405 CA weather conditions near Costa Mesa, California
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Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: haze 59°F 2025-12-13T12:30:00 - This Afternoon 2025-12-13, Mostly Sunny. Mostly sunny, with a high near 70. West wind around 5 mph.
Tonight 2025-12-13, Patchy Fog. Patchy fog. Otherwise, mostly cloudy, with a low around 52. Calm wind.Sunday 2025-12-14, Patchy Fog then Sunny. Patchy fog before 10am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 72. Calm wind becoming west around 5 mph in the afternoon.
Sunday Night 2025-12-14, Mostly Clear. Mostly clear, with a low around 51. Calm wind.
Monday 2025-12-15, Sunny. Sunny, with a high near 76. Calm wind becoming west around 5 mph in the afternoon.- Monday Night 2025-12-15, Mostly Clear. Mostly clear, with a low around 53.
- Tuesday 2025-12-16, Sunny. Sunny, with a high near 77.
- Tuesday Night 2025-12-16, Patchy Fog. Patchy fog after 10pm. Otherwise, increasing clouds, with a low around 53.
Wednesday 2025-12-17, Patchy Fog then Mostly Sunny. Patchy fog before 10am. Otherwise, mostly sunny, with a high near 72.
Wednesday Night 2025-12-17, Partly Cloudy. Partly cloudy, with a low around 53.- Thursday 2025-12-18, Mostly Sunny. Mostly sunny, with a high near 72.
- Thursday Night 2025-12-18, Patchy Fog. Patchy fog. Otherwise, mostly cloudy, with a low around 53.