Sign Hill Park Weather Forecast

    • 60
    • 70

    Decreasing Clouds

    • 59
    • 74

    Mostly Sunny

    • 59
    • 80

    Mostly Sunny

    • 59
    • 80

    Mostly Sunny

    • 59
    • 77

    Mostly Sunny

    • 59
    • 74

    Mostly Sunny

    • 59
    • 74

    Mostly Sunny

Today 13 Sep San Francisco Bay Shoreline

Sunny. Highs in the 70s. West Winds 10 to 20 Mph.

Tonight 13 Sep San Francisco Bay Shoreline

Mostly clear in the evening then becoming partly cloudy. Lows in the lower 60s. West Winds 10 to 20 Mph.

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Sign Hill Park Temperature Statistics

September Temperature

San Francisco, San Francisco International Airport (3.7 miles)

  • Lowest 1 September, 2025

    57 °F

  • Average September

    65.5 °F

  • Highest 8 September, 2025

    77 °F

Climate (2020–Present)

San Francisco, San Francisco International Airport (3.7 miles)

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  • Average Low 2020–2025

    52.3 °F

  • Average 2020–2025

    58.3 °F

  • Average High 2020–2025

    66.7 °F
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