Mountain Spring Weather Forecast

    • 59
    • 82

    Mostly Sunny

    • 64
    • 91

    Becoming Sunny

    • 63
    • 94

    Sunny

    • 63
    • 91

    Mostly Sunny

    • 61
    • 85

    Partly Sunny

    • 61
    • 84

    Slight Chance Rain Showers

    • 59
    • 82

    Partly Sunny

Today 14 Sep Santa Clara Valley Including San Jose

Sunny. Highs in the lower to mid 80s. Northwest Winds 15 to 20 Mph.

Tonight 14 Sep Santa Clara Valley Including San Jose

Mostly clear. Lows in the upper 50s. Northwest Winds 10 to 20 Mph in the evening. Becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mountain Spring Temperature Statistics

September Temperature

San Jose / Reid / Hillv (4.3 miles)

  • Lowest 7 September, 2025

    59 °F

  • Average September

    72.2 °F

  • Highest 1 September, 2025

    93.2 °F

Climate (2020–Present)

San Jose / Reid / Hillv (4.3 miles)

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  • Average Low 2020–2025

    51.5 °F

  • Average 2020–2025

    63.5 °F

  • Average High 2020–2025

    72.3 °F
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