Central Portola Valley Weather Forecast

    • 53
    • 77

    Mostly Sunny

    • 54
    • 76

    Slight Chance Rain

    • 51
    • 76

    Mostly Sunny

    • 52
    • 78

    Mostly Sunny

    • 53
    • 78

    Mostly Sunny

    • 56
    • 82

    Mostly Sunny

Today 2 Sep San Francisco Bay Shoreline

Mostly cloudy in the morning then becoming partly cloudy. Highs in the lower to mid 70s. South Winds 5 to 10 Mph becoming west 10 to 20 Mph in the afternoon.

Tonight 2 Sep San Francisco Bay Shoreline

Mostly clear in the evening then becoming partly cloudy. Lows in the upper 50s. West Winds 10 to 15 Mph. Becoming south up to 5 Mph after midnight.

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Central Portola Valley Temperature Statistics

September Temperature

Palo Alto Airport (7.5 miles)

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  • Average September

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Climate (2021–2026)

Palo Alto Airport (7.5 miles)

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  • Average Low 2021–2026

    51.2 °F

  • Average 2021–2026

    60.7 °F

  • Average High 2021–2026

    67.4 °F
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