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Union City, CA Marine Weather Forecast

This Afternoon - 62°F
Jul 02, 2026
14 mph NW
Mostly Sunny
Mostly sunny. High near 62, with temperatures falling to around 60 in the afternoon. Northwest wind around 14 mph, with gusts as high as 18 mph.
Tonight - 54°F
Jul 02, 2026
3 to 14 mph NNW
Mostly Clear
Mostly clear, with a low around 54. North northwest wind 3 to 14 mph, with gusts as high as 18 mph.
Friday - 62°F
Jul 03, 2026
3 to 14 mph NW
Sunny
Sunny, with a high near 62. Northwest wind 3 to 14 mph, with gusts as high as 20 mph.
Friday Night - 55°F
Jul 03, 2026
2 to 13 mph WNW
Mostly Clear
Mostly clear, with a low around 55. West northwest wind 2 to 13 mph, with gusts as high as 20 mph.
Independence Day - 62°F
Jul 04, 2026
2 to 14 mph W
Mostly Sunny
Mostly sunny, with a high near 62. West wind 2 to 14 mph, with gusts as high as 20 mph.
Saturday Night - 55°F
Jul 04, 2026
5 to 14 mph W
Mostly Cloudy
Mostly cloudy, with a low around 55.
Sunday - 64°F
Jul 05, 2026
5 to 15 mph WSW
Mostly Sunny
Mostly sunny, with a high near 64.
Sunday Night - 55°F
Jul 05, 2026
6 to 15 mph W
Partly Cloudy
Partly cloudy, with a low around 55.
Monday - 64°F
Jul 06, 2026
6 to 16 mph W
Patchy Fog then Mostly Sunny
Patchy fog between 7am and 11am. Mostly sunny, with a high near 64.
Monday Night - 55°F
Jul 06, 2026
6 to 16 mph WSW
Partly Cloudy
Partly cloudy, with a low around 55.
Tuesday - 64°F
Jul 07, 2026
5 to 15 mph W
Patchy Fog
Patchy fog before 2pm. Mostly sunny, with a high near 64.
Tuesday Night - 54°F
Jul 07, 2026
5 to 15 mph WSW
Partly Cloudy
Partly cloudy, with a low around 54.
Wednesday - 65°F
Jul 08, 2026
5 to 14 mph WSW
Patchy Fog then Mostly Sunny
Patchy fog between 7am and 11am. Mostly sunny, with a high near 65.
Wednesday Night - 55°F
Jul 08, 2026
5 to 14 mph WSW
Partly Cloudy
Partly cloudy, with a low around 55.

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