San Francisco Bay - Sierra Point Marina Weather Forecast

    • 57
    • 71

    Increasing Clouds

    • 58
    • 68

    Partly Sunny

    • 59
    • 74

    Partly Sunny

    • 58
    • 68

    Partly Sunny

    • 58
    • 68

    Partly Sunny

    • 59
    • 67

    Partly Sunny

Today 15 Sep San Francisco Bay Shoreline

Partly cloudy in the morning then becoming sunny. Highs in the 70s. Southwest Winds 5 to 10 Mph. Becoming west 10 to 20 Mph in the afternoon.

Tonight 15 Sep San Francisco Bay Shoreline

Mostly clear in the evening then becoming partly cloudy. Lows in the upper 50s. West Winds 10 to 20 Mph. Becoming southwest 5 to 15 Mph after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

San Francisco Bay - Sierra Point Marina Temperature Statistics

September Temperature

San Francisco, San Francisco International Airport (3.7 miles)

  • Lowest 7 September, 2026

    56.6 °F

  • Average September

    69.1 °F

  • Highest 9 September, 2026

    94.6 °F

Climate (2021–2026)

San Francisco, San Francisco International Airport (3.7 miles)

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

  • Average Low 2021–2026

    52.5 °F

  • Average 2021–2026

    58.7 °F

  • Average High 2021–2026

    66.8 °F
Get WillyWeather+ to remove ads