Sierra Vista Open Space Preserve Weather Forecast

    • 52
    • 73

    Mostly Sunny

    • 56
    • 77

    Mostly Sunny

    • 63
    • 86

    Mostly Sunny

    • 59
    • 86

    Mostly Sunny

    • 55
    • 77

    Mostly Sunny

    • 52
    • 75

    Mostly Sunny

Today 21 Sep Eastern Santa Clara Hills

Partly cloudy in the morning then becoming sunny. Highs in the lower 70s. Southwest Winds around 5 Mph.

Tonight 21 Sep Eastern Santa Clara Hills

Clear. Lows in the 40s to upper 50s. West Winds around 5 Mph.

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Sierra Vista Open Space Preserve Temperature Statistics

September Temperature

San Jose / Reid / Hillv (4.3 miles)

  • Lowest 7 September, 2026

    53.6 °F

  • Average September

    72.4 °F

  • Highest 9 September, 2026

    98.6 °F

Climate (2021–2026)

San Jose / Reid / Hillv (4.3 miles)

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  • Average Low 2021–2026

    52.1 °F

  • Average 2021–2026

    63.7 °F

  • Average High 2021–2026

    72.2 °F
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