San Francisco Bay - Sierra Point Marina Weather Forecast

    • 58
    • 69

    Increasing Clouds

    • 58
    • 72

    Increasing Clouds

    • 58
    • 72

    Mostly Cloudy

    • 57
    • 70

    Mostly Cloudy

    • 57
    • 69

    Mostly Cloudy

    • 57
    • 71

    Partly Sunny

    • 57
    • 72

    Partly Sunny

Today 21 Aug San Francisco Bay Shoreline

Partly cloudy. Highs in the upper 60s to mid 70s. West Winds 10 to 20 Mph.

Tonight 21 Aug San Francisco Bay Shoreline

Mostly clear late in the evening then becoming partly cloudy. Lows in the upper 50s. West Winds 5 to 15 Mph.

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San Francisco Bay - Sierra Point Marina Temperature Statistics

August Temperature

San Francisco, San Francisco International Airport (3.7 miles)

  • Lowest 3 August, 2026

    56.6 °F

  • Average August

    65.2 °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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