Sierra Weather Forecast

    • 56
    • 78

    Increasing Clouds

    • 57
    • 75

    Mostly Cloudy

    • 52
    • 71

    Partly Sunny

    • 55
    • 79

    Mostly Sunny

    • 56
    • 82

    Mostly Sunny

    • 56
    • 81

    Mostly Sunny

Today 25 Jun Santa Clara Valley Including San Jose

Partly cloudy in the morning then becoming sunny. Highs in the lower 80s. Southeast Winds up to 5 Mph. Becoming west 5 to 15 Mph in the afternoon.

Tonight 25 Jun Santa Clara Valley Including San Jose

Mostly clear in the evening then becoming mostly cloudy. Lows in the mid 50s. West Winds 5 to 15 Mph.

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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

    72.4 °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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