Sierra Weather Forecast

    • 55
    • 79

    Mostly Sunny

    • 56
    • 83

    Mostly Sunny

    • 55
    • 81

    Mostly Sunny

    • 54
    • 78

    Partly Sunny

    • 54
    • 75

    Partly Sunny

    • 55
    • 79

    Mostly Sunny

Today 28 Jun Santa Clara Valley Including San Jose

Sunny. Highs near 80. Northwest Winds 5 to 10 Mph increasing to 10 to 20 Mph in the afternoon.

Tonight 28 Jun Santa Clara Valley Including San Jose

Clear in the evening then becoming partly cloudy. Lows in the mid 50s. Northwest Winds 10 to 20 Mph. Becoming southwest around 5 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sierra Temperature Statistics

June Temperature

San Jose / Reid / Hillv (1.9 miles)

  • Lowest 2 June, 2026

    53.6 °F

  • Average June

    72 °F

  • Highest 11 June, 2026

    96.8 °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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