Sierra Vista Open Space Preserve Weather Forecast

    • 63
    • 86

    Increasing Clouds

    • 60
    • 79

    Chance Rain Showers

    • 58
    • 76

    Chance Rain Showers

    • 59
    • 78

    Mostly Sunny

    • 61
    • 80

    Mostly Sunny

    • 62
    • 85

    Chance Rain Showers

    • 58
    • 75

    Chance Rain Showers

Today 17 Sep Eastern Santa Clara Hills

Sunny. Highs in the mid 80s. Northwest Winds 5 to 10 Mph.

Tonight 17 Sep Eastern Santa Clara Hills

Partly cloudy in the evening then becoming mostly cloudy. Lows in the 60s to lower 70s. West Winds 5 to 10 Mph.

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Sierra Vista Open Space Preserve Temperature Statistics

September Temperature

San Jose / Reid / Hillv (4.3 miles)

  • Lowest 7 September, 2025

    59 °F

  • Average September

    72.3 °F

  • Highest 1 September, 2025

    93.2 °F

Climate (2020–Present)

San Jose / Reid / Hillv (4.3 miles)

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  • Average Low 2020–2025

    51.5 °F

  • Average 2020–2025

    63.5 °F

  • Average High 2020–2025

    72.3 °F
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