San Antonio Park Weather Forecast

    • 58
    • 83

    Increasing Clouds

    • 60
    • 80

    Becoming Sunny

    • 59
    • 77

    Mostly Cloudy

    • 61
    • 80

    Partly Sunny

    • 61
    • 80

    Partly Sunny

    • 62
    • 79

    Partly Sunny

    • 60
    • 77

    Partly Sunny

Today 3 Sep Santa Clara Valley Including San Jose

Sunny. Highs in the 80s to lower 90s. Northwest Winds 5 to 15 Mph.

Tonight 3 Sep Santa Clara Valley Including San Jose

Mostly clear in the evening then becoming mostly cloudy. Lows in the upper 50s. Northwest Winds 5 to 10 Mph.

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San Antonio Park Temperature Statistics

September Temperature

San Jose, San Jose International Airport (6.8 miles)

  • Lowest 1 September, 2025

    62.1 °F

  • Average September

    73.8 °F

  • Highest 1 September, 2025

    89.1 °F

Climate (2020–Present)

San Jose, San Jose International Airport (6.8 miles)

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  • Average Low 2020–2025

    51.8 °F

  • Average 2020–2025

    61.5 °F

  • Average High 2020–2025

    72.6 °F
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