I-405 CA weather conditions near Fountain Valley, California

Roadnow AI Agent Live Update

7 day weather forecast

• Overnight 2025-08-29, Mostly Clear. Mostly clear, with a low around 69. West wind around 5 mph becoming calm.
• Friday 2025-08-29, Sunny. Sunny, with a high near 83. Light west wind increasing to 5 to 10 mph in the afternoon.
• Friday Night 2025-08-29, Mostly Clear. Mostly clear, with a low around 68. West wind around 5 mph becoming calm in the evening.
• Saturday 2025-08-30, Sunny. Sunny, with a high near 82. Light southwest wind increasing to 5 to 10 mph in the afternoon.
• Saturday Night 2025-08-30, Mostly Clear. Mostly clear, with a low around 68. Southwest wind around 5 mph becoming calm in the evening.
• Sunday 2025-08-31, Mostly Sunny. Mostly sunny, with a high near 83.
• Sunday Night 2025-08-31, Increasing Clouds. Increasing clouds, with a low around 68.
• Labor Day 2025-09-01, Decreasing Clouds. Mostly cloudy, then gradually becoming sunny, with a high near 84.
• Monday Night 2025-09-01, Mostly Clear. Mostly clear, with a low around 68.
• Tuesday 2025-09-02, Mostly Sunny. Mostly sunny, with a high near 85.
• Tuesday Night 2025-09-02, Mostly Clear. Mostly clear, with a low around 67.
• Wednesday 2025-09-03, Sunny. Sunny, with a high near 83.
• Wednesday Night 2025-09-03, Increasing Clouds. Increasing clouds, with a low around 67.
• Thursday 2025-09-04, Becoming Sunny. Partly sunny, then gradually becoming sunny, with a high near 81.