San Jose Weather Forecast

    • 54
    • 75

    Mostly Sunny

    • 55
    • 84

    Increasing Clouds

    • 56
    • 84

    Mostly Sunny

    • 56
    • 81

    Mostly Sunny

    • 56
    • 82

    Mostly Sunny

    • 56
    • 84

    Mostly Sunny

    • 56
    • 82

    Partly Sunny

Today 13 Sep Santa Clara Valley Including San Jose

Sunny. Highs in the 70s. Northwest Winds 15 to 20 Mph.

Tonight 13 Sep Santa Clara Valley Including San Jose

Mostly clear. Lows in the mid 50s. Northwest Winds 10 to 20 Mph. Becoming southeast around 5 Mph after midnight.

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San Jose Temperature Statistics

September Temperature

San Jose, San Jose International Airport (1.9 miles)

  • Lowest 5 September, 2026

    54.6 °F

  • Average September

    71.9 °F

  • Highest 9 September, 2026

    97.6 °F

Climate (2021–2026)

San Jose, San Jose International Airport (1.9 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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