Union City Weather Forecast

    • 53
    • 68

    Increasing Clouds

    • 59
    • 72

    Rain

    • 55
    • 64

    Rain

    • 54
    • 67

    Partly Sunny

    • 55
    • 69

    Patchy Fog

    • 56
    • 71

    Partly Sunny

Today 3 Nov San Francisco Bay Shoreline

Partly cloudy in the morning then becoming sunny. Highs in the mid 60s to lower 70s. West Winds 5 to 10 Mph.

Tonight 3 Nov San Francisco Bay Shoreline

Mostly clear in the evening then becoming partly cloudy. Lows in the lower 50s. West Winds around 5 Mph. Becoming southeast after midnight.

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  • Temperature Real-Time

Union City Temperature Statistics

November Temperature

Hayward, Hayward Air Terminal (6.2 miles)

  • Lowest 1 November, 2025

    51.1 °F

  • Average November

    58.1 °F

  • Highest 1 November, 2025

    68 °F

Climate (2020–Present)

Hayward, Hayward Air Terminal (6.2 miles)

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  • Average Low 2020–2025

    52 °F

  • Average 2020–2025

    59.2 °F

  • Average High 2020–2025

    68.8 °F
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