Castro City Weather Forecast

    • 60
    • 78

    Decreasing Clouds

    • 58
    • 74

    Partly Sunny

    • 57
    • 77

    Mostly Sunny

    • 58
    • 78

    Mostly Sunny

    • 59
    • 83

    Mostly Sunny

    • 60
    • 86

    Mostly Sunny

    • 60
    • 84

    Sunny

Today 16 Aug San Francisco Bay Shoreline

Mostly cloudy. Highs in the lower to mid 70s. West Winds 10 to 20 Mph.

Tonight 16 Aug San Francisco Bay Shoreline

Partly cloudy in the evening then becoming mostly cloudy. Lows around 60. West Winds 10 to 20 Mph.

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Castro City Temperature Statistics

August Temperature

Palo Alto Airport (4.3 miles)

  • Lowest 3 August, 2025

    53.6 °F

  • Average August

    68.1 °F

  • Highest 6 August, 2025

    80.6 °F

Climate (2020–Present)

Palo Alto Airport (4.3 miles)

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  • Average Low 2020–2025

    50.9 °F

  • Average 2020–2025

    60.5 °F

  • Average High 2020–2025

    67.2 °F
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