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National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
7-Day Forecast 37.59°N 122.02°W (Text-Only)
NWS Forecast for: Union City CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Last Update: 11:26 pm PDT Jun 29, 2026		Print

  • Tonight

    Tonight: Mostly clear, with a low around 56. North northwest wind around 5 mph becoming calm after midnight.

    Low: 56 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 78. Light and variable wind becoming west northwest 6 to 11 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 78 °F

    Sunny

  • Tuesday
    Night

    Tuesday Night: Mostly clear, with a low around 55. West northwest wind 5 to 10 mph becoming south after midnight.

    Low: 55 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 75. South southeast wind 5 to 11 mph becoming west in the afternoon. Winds could gust as high as 21 mph.

    High: 75 °F

    Sunny

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 55. West wind 8 to 13 mph becoming south southwest after midnight. Winds could gust as high as 21 mph.

    Low: 55 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

  • Thursday
    Night

    Thursday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Friday
    Night

    Friday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

    • Tonight: Mostly clear, with a low around 56. North northwest wind around 5 mph becoming calm after midnight.

    Tuesday: Sunny, with a high near 78. Light and variable wind becoming west northwest 6 to 11 mph in the afternoon. Winds could gust as high as 18 mph.

    Tuesday Night: Mostly clear, with a low around 55. West northwest wind 5 to 10 mph becoming south after midnight.

    Wednesday: Sunny, with a high near 75. South southeast wind 5 to 11 mph becoming west in the afternoon. Winds could gust as high as 21 mph.

    Wednesday Night: Partly cloudy, with a low around 55. West wind 8 to 13 mph becoming south southwest after midnight. Winds could gust as high as 21 mph.

    Thursday: Mostly sunny, with a high near 73.

    Thursday Night: Partly cloudy, with a low around 55.

    Friday: Mostly sunny, with a high near 76.

    Friday Night: Mostly clear, with a low around 56.

    Independence Day: Mostly sunny, with a high near 75.

    Saturday Night: Partly cloudy, with a low around 56.

    Sunday: Partly sunny, with a high near 74.

    Sunday Night: Partly cloudy, with a low around 56.

    Monday: Partly sunny, with a high near 72.


    Union City CA
     37.59°N 122.02°W (Elev. 164 ft)

    Visit your local NWS office at: https://www.weather.gov/mtr