San Francisco Bay - Sierra Point Marina Weather Forecast

    • 55
    • 69

    Increasing Clouds

    • 57
    • 66

    Mostly Cloudy

    • 56
    • 68

    Partly Sunny

    • 58
    • 71

    Partly Sunny

    • 58
    • 66

    Partly Sunny

    • 57
    • 65

    Partly Sunny

Today 30 Aug San Francisco Bay Shoreline

Partly cloudy in the morning then becoming sunny. Highs in the upper 60s to mid 70s. Southwest Winds 5 to 10 Mph becoming west 10 to 20 Mph in the afternoon.

Tonight 30 Aug San Francisco Bay Shoreline

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

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San Francisco Bay - Sierra Point Marina Temperature Statistics

August Temperature

San Francisco, San Francisco International Airport (3.7 miles)

  • Lowest 26 August, 2026

    55.7 °F

  • Average August

    65.1 °F

  • Highest 2 August, 2026

    80.7 °F

Climate (2021–2026)

San Francisco, San Francisco International Airport (3.7 miles)

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  • Average Low 2021–2026

    52.5 °F

  • Average 2021–2026

    58.7 °F

  • Average High 2021–2026

    66.8 °F
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