I-580 CA weather conditions near Castro Valley, California
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Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: Clear 61°F 2025-10-31T18:45:00 
Tonight 2025-10-31, Partly Cloudy. Partly cloudy, with a low around 53. West southwest wind around 5 mph becoming calm in the evening.
Saturday 2025-11-01, Becoming Sunny. Partly sunny, then gradually becoming sunny, with a high near 73. Calm wind becoming west around 6 mph in the afternoon.- Saturday Night 2025-11-01, Partly Cloudy. Partly cloudy, with a low around 55. Calm wind.
- Sunday 2025-11-02, Mostly Sunny. Mostly sunny, with a high near 76. Calm wind becoming west northwest around 5 mph in the afternoon.
- Sunday Night 2025-11-02, Partly Cloudy. Partly cloudy, with a low around 54. West wind around 5 mph becoming calm in the evening.
- Monday 2025-11-03, Mostly Sunny. Mostly sunny, with a high near 70.
Monday Night 2025-11-03, Mostly Cloudy. Mostly cloudy, with a low around 55.
Tuesday 2025-11-04, Partly Sunny. Partly sunny, with a high near 73.
Tuesday Night 2025-11-04, Slight Chance Rain. A slight chance of rain after 11pm. Mostly cloudy, with a low around 58.
Wednesday 2025-11-05, Rain Likely. Rain likely, mainly after 11am. Cloudy, with a high near 67.- Wednesday Night 2025-11-05, Chance Rain. A chance of rain. Mostly cloudy, with a low around 56.
Thursday 2025-11-06, Patchy Fog then Mostly Sunny. Patchy fog. Otherwise, mostly sunny, with a high near 68.
- Thursday Night 2025-11-06, Partly Cloudy. Partly cloudy, with a low around 55.