Cupertino Weather Forecast

    • 57
    • 77

    Mostly Sunny

    • 57
    • 76

    Partly Sunny

    • 54
    • 78

    Mostly Sunny

    • 55
    • 81

    Mostly Sunny

    • 56
    • 83

    Mostly Sunny

    • 56
    • 84

    Mostly Sunny

    • 57
    • 86

    Mostly Sunny

Today 18 Jun Santa Clara Valley Including San Jose

Sunny. Highs in the upper 70s. South Winds 5 to 15 Mph.

Tonight 18 Jun Santa Clara Valley Including San Jose

Mostly clear in the evening then becoming partly cloudy. Lows in the upper 50s. Southeast Winds 10 to 20 Mph.

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Cupertino Temperature Statistics

June Temperature

San Jose, San Jose International Airport (6.2 miles)

  • Lowest 7 June, 2026

    51.7 °F

  • Average June

    69.2 °F

  • Highest 11 June, 2026

    98.7 °F

Climate (2021–2026)

San Jose, San Jose International Airport (6.2 miles)

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  • Average Low 2021–2026

    52.2 °F

  • Average 2021–2026

    62 °F

  • Average High 2021–2026

    72.7 °F
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