I-280 CA weather conditions near San Mateo, California
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Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: haze 72°F 2025-09-20T15:45:00 - Tonight 2025-09-20, Mostly Clear. Mostly clear, with a low around 58. West southwest wind 7 to 14 mph, with gusts as high as 21 mph.
Sunday 2025-09-21, Becoming Sunny. Partly sunny, then gradually becoming sunny, with a high near 75. West wind 6 to 14 mph, with gusts as high as 20 mph.
Sunday Night 2025-09-21, Clear. Clear, with a low around 57. West southwest wind 6 to 11 mph.
Monday 2025-09-22, Sunny. Sunny, with a high near 79. Light west wind becoming west northwest 5 to 9 mph in the afternoon.- Monday Night 2025-09-22, Clear. Clear, with a low around 58. West northwest wind 9 to 14 mph becoming light west southwest after midnight. Winds could gust as high as 18 mph.
- Tuesday 2025-09-23, Sunny. Sunny, with a high near 81.
Tuesday Night 2025-09-23, Chance Showers. A 30 percent chance of showers. Partly cloudy, with a low around 60.Wednesday 2025-09-24, Slight Chance Showers then Sunny. A slight chance of showers before 11am. Mostly sunny, with a high near 77.
Wednesday Night 2025-09-24, Partly Cloudy. Partly cloudy, with a low around 58.- Thursday 2025-09-25, Mostly Sunny. Mostly sunny, with a high near 75.
- Thursday Night 2025-09-25, Partly Cloudy. Partly cloudy, with a low around 57.
- Friday 2025-09-26, Mostly Sunny. Mostly sunny, with a high near 73.
- Friday Night 2025-09-26, Partly Cloudy. Partly cloudy, with a low around 57.
- Saturday 2025-09-27, Mostly Sunny. Mostly sunny, with a high near 72.