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 70°F 2025-06-20T18:15:00 
Tonight 2025-06-20, Partly Cloudy. Partly cloudy, with a low around 63. Southwest wind 5 to 10 mph becoming southeast after midnight.
Saturday 2025-06-21, Mostly Sunny. Mostly sunny, with a high near 72. Southeast wind around 10 mph, with gusts as high as 20 mph.- Saturday Night 2025-06-21, Partly Cloudy. Partly cloudy, with a low around 61. Southeast wind 5 to 10 mph.
Sunday 2025-06-22, Decreasing Clouds. Mostly cloudy, then gradually becoming sunny, with a high near 76. South wind 5 to 10 mph becoming west in the afternoon.- Sunday Night 2025-06-22, Partly Cloudy. Partly cloudy, with a low around 61. Southwest wind around 5 mph becoming southeast after midnight.
- Monday 2025-06-23, Mostly Sunny. Mostly sunny, with a high near 74.
Monday Night 2025-06-23, Increasing Clouds. Increasing clouds, with a low around 60.- Tuesday 2025-06-24, Decreasing Clouds. Mostly cloudy, then gradually becoming sunny, with a high near 73.
- Tuesday Night 2025-06-24, Increasing Clouds. Increasing clouds, with a low around 60.
- Wednesday 2025-06-25, Decreasing Clouds. Mostly cloudy, then gradually becoming sunny, with a high near 75.
- Wednesday Night 2025-06-25, Increasing Clouds. Increasing clouds, with a low around 61.
- Thursday 2025-06-26, Decreasing Clouds. Mostly cloudy, then gradually becoming sunny, with a high near 77.
- Thursday Night 2025-06-26, Increasing Clouds. Increasing clouds, with a low around 62.
- Friday 2025-06-27, Decreasing Clouds. Mostly cloudy, then gradually becoming sunny, with a high near 78.