Heritage Park Weather Forecast

    • 56
    • 79

    Becoming Sunny

    • 57
    • 82

    Increasing Clouds

    • 57
    • 76

    Mostly Cloudy

    • 57
    • 79

    Partly Sunny

    • 58
    • 82

    Mostly Sunny

    • 62
    • 89

    Mostly Sunny

    • 62
    • 90

    Mostly Sunny

Today 18 Sep Santa Clara Valley Including San Jose

Sunny. Highs near 80. Northwest Winds 10 to 20 Mph.

Tonight 18 Sep Santa Clara Valley Including San Jose

Mostly clear except patchy fog after midnight. Lows in the mid 50s. Northwest Winds 5 to 15 Mph. Becoming south up to 5 Mph after midnight.

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  • Temperature Real-Time

Heritage Park Temperature Statistics

September Temperature

San Jose, San Jose International Airport (5 miles)

  • Lowest 5 September, 2026

    54.6 °F

  • Average September

    70.9 °F

  • Highest 9 September, 2026

    97.6 °F

Climate (2021–2026)

San Jose, San Jose International Airport (5 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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