Santa Clara Weather Forecast

    • 54
    • 78

    Becoming Sunny

    • 54
    • 77

    Mostly Sunny

    • 53
    • 71

    Mostly Sunny

    • 56
    • 77

    Sunny

    • 59
    • 85

    Sunny

    • 59
    • 85

    Mostly Sunny

Today 25 Sep Santa Clara Valley Including San Jose

Partly cloudy in the morning then becoming sunny. Highs near 80. Northwest Winds 5 to 15 Mph.

Tonight 25 Sep Santa Clara Valley Including San Jose

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

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Santa Clara Temperature Statistics

September Temperature

San Jose, San Jose International Airport (1.2 miles)

  • Lowest 5 September, 2026

    54.6 °F

  • Average September

    69.9 °F

  • Highest 9 September, 2026

    97.6 °F

Climate (2021–2026)

San Jose, San Jose International Airport (1.2 miles)

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  • Average Low 2021–2026

    52.3 °F

  • Average 2021–2026

    62.1 °F

  • Average High 2021–2026

    72.8 °F
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