Cupertino Weather Forecast

    • 52
    • 70

    Decreasing Clouds

    • 51
    • 71

    Partly Sunny

    • 53
    • 72

    Mostly Sunny

    • 55
    • 79

    Mostly Sunny

    • 55
    • 81

    Mostly Sunny

    • 54
    • 77

    Partly Sunny

    • 56
    • 78

    Mostly Sunny

Today 25 Oct Santa Clara Valley Including San Jose

Cloudy. Highs in the upper 60s. Southeast Winds around 5 Mph. Becoming southwest in the afternoon.

Tonight 25 Oct Santa Clara Valley Including San Jose

Mostly cloudy. Lows in the lower 50s. Northwest Winds around 5 Mph.

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Cupertino Temperature Statistics

October Temperature

San Jose, San Jose International Airport (6.2 miles)

  • Lowest 14 October, 2025

    48.9 °F

  • Average October

    63.8 °F

  • Highest 6 October, 2025

    86 °F

Climate (2020–Present)

San Jose, San Jose International Airport (6.2 miles)

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  • Average Low 2020–2025

    51.8 °F

  • Average 2020–2025

    61.5 °F

  • Average High 2020–2025

    72.4 °F
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