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: Rain 65°F 2025-11-14T18:00:00 
Tonight 2025-11-14, Heavy Rain. Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 61. East wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Saturday 2025-11-15, Heavy Rain. Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 66. Southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.- Saturday Night 2025-11-15, Showers. Showers and possibly a thunderstorm. Low around 55. Southeast wind 5 to 10 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Sunday 2025-11-16, Chance Showers. A chance of showers, mainly before 4pm. Mostly cloudy, with a high near 65. Southeast wind 5 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night 2025-11-16, Chance Showers. A chance of showers, mainly after 10pm. Mostly cloudy, with a low around 55. Southwest wind around 5 mph becoming southeast after midnight. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday 2025-11-17, Showers Likely. Showers likely. Mostly cloudy, with a high near 64. Chance of precipitation is 70%.
Monday Night 2025-11-17, Showers Likely. Showers likely. Mostly cloudy, with a low around 53. Chance of precipitation is 70%.
Tuesday 2025-11-18, Chance Showers. A chance of showers. Partly sunny, with a high near 64.
Tuesday Night 2025-11-18, Slight Chance Showers. A slight chance of showers. Partly cloudy, with a low around 52.
Wednesday 2025-11-19, Mostly Sunny. Mostly sunny, with a high near 67.- Wednesday Night 2025-11-19, Slight Chance Showers. A slight chance of showers. Increasing clouds, with a low around 54.
- Thursday 2025-11-20, Chance Showers. A chance of showers. Partly sunny, with a high near 66.
Thursday Night 2025-11-20, Heavy Rain. A chance of showers. The rain could be heavy at times. Mostly cloudy, with a low around 54.- Friday 2025-11-21, Chance Showers. A chance of showers. Partly sunny, with a high near 65.