Sierra Weather Forecast

    • 67
    • 90

    Decreasing Clouds

    • 63
    • 91

    Mostly Sunny

    • 59
    • 89

    Mostly Sunny

    • 58
    • 84

    Partly Sunny

    • 59
    • 84

    Partly Sunny

    • 60
    • 83

    Mostly Cloudy

Today 13 Jul Santa Clara Valley Including San Jose

Mostly cloudy in the morning then becoming partly cloudy. Highs in the upper 80s to mid 90s. Light Winds. Becoming west 5 to 10 Mph in the afternoon.

Tonight 13 Jul Santa Clara Valley Including San Jose

Mostly clear in the evening then becoming partly cloudy. Lows in the mid 60s. West Winds 5 to 10 Mph in the evening. Becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sierra Temperature Statistics

July Temperature

San Jose / Reid / Hillv (1.9 miles)

  • Lowest 5 July, 2026

    57.2 °F

  • Average July

    70.4 °F

  • Highest 11 July, 2026

    84.2 °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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