San Jose Weather Forecast

    • 56
    • 78

    Sunny

    • 60
    • 86

    Mostly Sunny

    • 68
    • 88

    Partly Sunny

    • 71
    • 95

    Partly Sunny

    • 64
    • 92

    Mostly Sunny

    • 61
    • 85

    Mostly Sunny

    • 59
    • 81

    Mostly Sunny

Today 6 Sep Santa Clara Valley Including San Jose

Sunny. Highs in the mid 70s to lower 80s. Northwest Winds 10 to 20 Mph.

Tonight 6 Sep Santa Clara Valley Including San Jose

Clear. Lows in the mid 50s. Northwest Winds 5 to 15 Mph decreasing to up to 5 Mph after midnight.

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San Jose Temperature Statistics

September Temperature

San Jose, San Jose International Airport (1.9 miles)

  • Lowest 3 September, 2026

    58.6 °F

  • Average September

    68.6 °F

  • Highest 3 September, 2026

    80.7 °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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