I-880 CA weather conditions near Union City, California
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Current Weather Conditions
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7 day weather forecast
Current condition: Clear 57°F 2026-05-04T20:30:00 Tonight 2026-05-04, Slight Chance Rain then Rain Likely. Rain likely, mainly after 3am. Mostly cloudy, with a low around 53. West northwest wind 5 to 9 mph becoming calm after midnight. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday 2026-05-05, Slight Chance Rain then Partly Sunny. A 10 percent chance of rain before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 64. Light southwest wind becoming west 5 to 10 mph in the morning.
Tuesday Night 2026-05-05, Mostly Cloudy. Mostly cloudy, with a low around 54. West northwest wind 5 to 9 mph becoming light west after midnight.
Wednesday 2026-05-06, Becoming Sunny. Mostly cloudy through mid morning, then gradual clearing, with a high near 71. Calm wind becoming west 5 to 8 mph in the afternoon.
Wednesday Night 2026-05-06, Partly Cloudy. Partly cloudy, with a low around 53. West southwest wind 5 to 11 mph, with gusts as high as 18 mph.
Thursday 2026-05-07, Mostly Sunny. Mostly sunny, with a high near 71.- Thursday Night 2026-05-07, Partly Cloudy. Partly cloudy, with a low around 52.
- Friday 2026-05-08, Mostly Sunny. Mostly sunny, with a high near 72.
- Friday Night 2026-05-08, Clear. Clear, with a low around 52.
Saturday 2026-05-09, Sunny. Sunny, with a high near 81.- Saturday Night 2026-05-09, Clear. Clear, with a low around 54.
- Sunday 2026-05-10, Sunny. Sunny, with a high near 87.
Sunday Night 2026-05-10, Mostly Clear. Mostly clear, with a low around 58.- Monday 2026-05-11, Sunny. Sunny, with a high near 88.