Union City Weather Forecast

    • 56
    • 75

    Chance Rain Showers

    • 56
    • 70

    Slight Chance Thunderstorms

    • 56
    • 71

    Mostly Cloudy

    • 56
    • 72

    Partly Sunny

    • 55
    • 69

    Mostly Cloudy

    • 55
    • 68

    Partly Sunny

Today 5 Jun San Francisco Bay Shoreline

Mostly cloudy. A slight chance of Showers in the afternoon. Highs in the upper 60s to mid 70s. Southwest Winds 10 to 20 Mph.

Tonight 5 Jun San Francisco Bay Shoreline

Mostly cloudy. A slight chance of Showers in the Evening, then a chance of Showers and a slight chance of Thunderstorms after midnight. Some Thunderstorms may produce small hail after midnight. Lows in the mid 50s. Southwest Winds 10 to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Union City Temperature Statistics

June Temperature

Hayward, Hayward Air Terminal (6.2 miles)

  • Lowest 1 June, 2023

    53.1 °F

  • Average June

    58.6 °F

  • Highest 2 June, 2023

    69.1 °F

Climate (2010–Present)

Hayward, Hayward Air Terminal (6.2 miles)

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  • Average Low 2010–Present

    50.9 °F

  • Average 2010–Present

    58 °F

  • Average High 2010–Present

    67.5 °F
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