Castro City Weather Forecast

    • 56
    • 80

    Mostly Sunny

    • 56
    • 77

    Partly Sunny

    • 57
    • 78

    Partly Sunny

    • 59
    • 78

    Mostly Cloudy

    • 59
    • 79

    Mostly Cloudy

    • 59
    • 80

    Partly Sunny

Today 16 Jul San Francisco Bay Shoreline

Partly cloudy in the morning then becoming sunny. Highs in the 70s. West Winds 10 to 20 Mph.

Tonight 16 Jul San Francisco Bay Shoreline

Mostly clear in the evening then becoming mostly cloudy. Lows in the mid 50s. West Winds 10 to 20 Mph.

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Castro City Temperature Statistics

July Temperature

Palo Alto Airport (4.3 miles)

  • Lowest 1 July, 2026

    55.4 °F

  • Average July

    66 °F

  • Highest 13 July, 2026

    78.8 °F

Climate (2021–2026)

Palo Alto Airport (4.3 miles)

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  • Average Low 2021–2026

    51.1 °F

  • Average 2021–2026

    60.6 °F

  • Average High 2021–2026

    67.4 °F
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