Cupertino Weather Forecast

    • 50
    • 79

    Becoming Sunny

    • 50
    • 75

    Mostly Sunny

    • 54
    • 80

    Mostly Sunny

    • 52
    • 84

    Mostly Sunny

    • 51
    • 76

    Mostly Sunny

    • 50
    • 75

    Sunny

Today 15 Jun Santa Clara Valley Including San Jose

Partly cloudy in the morning then becoming sunny. Highs in the 70s to mid 80s. West Winds 5 to 15 Mph.

Tonight 15 Jun Santa Clara Valley Including San Jose

Mostly clear. Lows in the lower 50s. Northwest Winds 5 to 15 Mph.

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Cupertino Temperature Statistics

June Temperature

San Jose, San Jose International Airport (6.2 miles)

  • Lowest 12 June, 2025

    53.1 °F

  • Average June

    65.1 °F

  • Highest 2 June, 2025

    79.6 °F

Climate (2020–Present)

San Jose, San Jose International Airport (6.2 miles)

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  • Average Low 2020–2025

    51.9 °F

  • Average 2020–2025

    61.6 °F

  • Average High 2020–2025

    72.7 °F
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