Sierra Weather Forecast

    • 56
    • 79

    Mostly Sunny

    • 56
    • 76

    Increasing Clouds

    • 54
    • 74

    Partly Sunny

    • 57
    • 76

    Mostly Sunny

    • 58
    • 77

    Partly Sunny

    • 56
    • 77

    Partly Sunny

    • 56
    • 77

    Mostly Sunny

Today 30 Aug Santa Clara Valley Including San Jose

Sunny. Highs near 80. Northwest Winds 5 to 15 Mph.

Tonight 30 Aug Santa Clara Valley Including San Jose

Mostly clear in the evening then becoming partly cloudy. Lows in the mid 50s. West Winds 5 to 10 Mph. Becoming south after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sierra Temperature Statistics

August Temperature

San Jose / Reid / Hillv (1.9 miles)

  • Lowest 1 August, 2026

    59 °F

  • Average August

    73.7 °F

  • Highest 3 August, 2026

    95 °F

Climate (2021–2026)

San Jose / Reid / Hillv (1.9 miles)

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  • Average Low 2021–2026

    52 °F

  • Average 2021–2026

    63.7 °F

  • Average High 2021–2026

    72.3 °F
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