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: Clear 66°F 2025-06-01T05:30:00 
Overnight 2025-06-01, Chance Showers. A chance of showers. Mostly cloudy, with a low around 64. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Sunday 2025-06-01, Chance Showers. A chance of showers, mainly before 11am. Mostly cloudy, with a high near 76. South wind 5 to 10 mph becoming west in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night 2025-06-01, Mostly Cloudy. Mostly cloudy, with a low around 62. West wind around 5 mph becoming south after midnight.
Monday 2025-06-02, Mostly Sunny. Mostly sunny, with a high near 72. South wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night 2025-06-02, Partly Cloudy. Partly cloudy, with a low around 59. Southwest wind around 5 mph becoming calm after midnight.
Tuesday 2025-06-03, Decreasing Clouds. Mostly cloudy, then gradually becoming sunny, with a high near 71.
Tuesday Night 2025-06-03, Mostly Clear. Mostly clear, with a low around 58.
Wednesday 2025-06-04, Sunny. Sunny, with a high near 73.- Wednesday Night 2025-06-04, Mostly Clear. Mostly clear, with a low around 58.
- Thursday 2025-06-05, Mostly Sunny. Mostly sunny, with a high near 73.
- Thursday Night 2025-06-05, Mostly Clear. Mostly clear, with a low around 59.
- Friday 2025-06-06, Mostly Sunny. Mostly sunny, with a high near 74.
- Friday Night 2025-06-06, Mostly Clear. Mostly clear, with a low around 59.
- Saturday 2025-06-07, Mostly Sunny. Mostly sunny, with a high near 74.