Cupertino Weather Forecast

    • 60
    • 92

    Sunny

    • 61
    • 94

    Sunny

    • 59
    • 93

    Mostly Sunny

    • 52
    • 84

    Partly Sunny

    • 51
    • 80

    Partly Sunny

    • 50
    • 78

    Partly Sunny

Today 18 Mar Santa Clara Valley Including San Jose

Sunny. Highs in the lower 90s. Light Winds. Becoming northwest 5 to 10 Mph in the afternoon.

Tonight 18 Mar Santa Clara Valley Including San Jose

Clear. Lows in the lower 60s. Northwest Winds around 5 Mph in the evening. Becoming light.

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  • Temperature Real-Time

Cupertino Temperature Statistics

March Temperature

San Jose, San Jose International Airport (6.2 miles)

  • Lowest 11 March, 2026

    45 °F

  • Average March

    60.2 °F

  • Highest 15 March, 2026

    80.1 °F

Climate (2021–Present)

San Jose, San Jose International Airport (6.2 miles)

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  • Average Low 2021–2026

    52 °F

  • Average 2021–2026

    61.7 °F

  • Average High 2021–2026

    72.5 °F
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