Alcatraz Island Weather Forecast

    • 51
    • 56

    Increasing Clouds

    • 47
    • 56

    Decreasing Clouds

    • 44
    • 53

    Mostly Sunny

    • 43
    • 51

    Mostly Sunny

    • 45
    • 53

    Mostly Cloudy

    • 46
    • 54

    Partly Sunny

    • 47
    • 55

    Mostly Sunny

Today 6 Jan San Francisco

Partly cloudy. Highs in the upper 50s. North Winds around 5 Mph.

Tonight 6 Jan San Francisco

Partly cloudy in the evening then becoming mostly cloudy. Lows in the lower 50s. Northwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Alcatraz Island Temperature Statistics

January Temperature

Oakland, Metro Oakland International Airport (12.4 miles)

  • Lowest 1 January, 2026

    50 °F

  • Average January

    55.7 °F

  • Highest 3 January, 2026

    62.1 °F

Climate (2021–Present)

Oakland, Metro Oakland International Airport (12.4 miles)

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  • Average Low 2021–2026

    51.1 °F

  • Average 2021–2026

    58.6 °F

  • Average High 2021–2026

    66.9 °F
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