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: Mostly Cloudy 64°F 2025-11-06T18:41:00 
Tonight 2025-11-06, Partly Cloudy. Partly cloudy, with a low around 56. Calm wind becoming southeast around 5 mph.
Friday 2025-11-07, Mostly Sunny. Mostly sunny, with a high near 78. Calm wind becoming west around 5 mph in the afternoon.Friday Night 2025-11-07, Mostly Clear then Patchy Fog. Patchy fog after 4am. Otherwise, mostly clear, with a low around 57. South wind around 5 mph becoming calm in the evening.
Saturday 2025-11-08, Patchy Fog then Sunny. Patchy fog before 10am. Otherwise, sunny, with a high near 78. Southwest wind 5 to 10 mph.
Saturday Night 2025-11-08, Patchy Fog. Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 58. South wind around 5 mph becoming calm in the evening.- Sunday Night 2025-11-09, Partly Cloudy. Partly cloudy, with a low around 60.
Monday 2025-11-10, Partly Sunny. Partly sunny, with a high near 85.- Monday Night 2025-11-10, Mostly Cloudy. Mostly cloudy, with a low around 61.
- Veterans Day 2025-11-11, Partly Sunny. Partly sunny, with a high near 78.
- Tuesday Night 2025-11-11, Mostly Cloudy. Mostly cloudy, with a low around 60.
- Wednesday 2025-11-12, Mostly Cloudy. Mostly cloudy, with a high near 73.
- Wednesday Night 2025-11-12, Mostly Cloudy. Mostly cloudy, with a low around 59.
Thursday 2025-11-13, Chance Showers. A chance of showers. Mostly cloudy, with a high near 71.