Alcatraz Island Weather Forecast

    • 55
    • 61

    Increasing Clouds

    • 55
    • 59

    Partly Sunny

    • 57
    • 62

    Mostly Cloudy

    • 57
    • 62

    Mostly Cloudy

    • 57
    • 63

    Partly Sunny

    • 57
    • 63

    Partly Sunny

Today 9 Jul San Francisco

Mostly cloudy in the morning then becoming sunny. Highs in the upper 50s to lower 70s. West Winds 5 to 15 Mph.

Tonight 9 Jul San Francisco

Mostly cloudy. Lows in the mid 50s. West Winds 5 to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Alcatraz Island Temperature Statistics

July Temperature

Oakland, Metro Oakland International Airport (12.4 miles)

  • Lowest 3 July, 2026

    55.7 °F

  • Average July

    63.1 °F

  • Highest 1 July, 2026

    70.6 °F

Climate (2021–2026)

Oakland, Metro Oakland International Airport (12.4 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    51.1 °F

  • Average 2021–2026

    58.8 °F

  • Average High 2021–2026

    67.2 °F
Get WillyWeather+ to remove ads