Vasona Reservoir Weather Forecast

    • 55
    • 82

    Mostly Sunny

    • 54
    • 79

    Mostly Sunny

    • 55
    • 85

    Mostly Sunny

    • 55
    • 83

    Partly Sunny

    • 55
    • 83

    Mostly Sunny

    • 56
    • 84

    Mostly Sunny

Today 12 Sep Santa Clara Valley Including San Jose

Partly cloudy in the morning then becoming sunny. Highs in the upper 70s to mid 80s. Northwest Winds 5 to 10 Mph increasing to 10 to 20 Mph in the afternoon.

Tonight 12 Sep Santa Clara Valley Including San Jose

Clear in the evening then becoming partly cloudy. Lows in the mid 50s. Northwest Winds 15 to 20 Mph with Gusts to around 40 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Vasona Reservoir Temperature Statistics

September Temperature

San Jose, San Jose International Airport (8.1 miles)

  • Lowest 5 September, 2026

    54.6 °F

  • Average September

    71.2 °F

  • Highest 9 September, 2026

    97 °F

Climate (2021–2026)

San Jose, San Jose International Airport (8.1 miles)

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  • Average Low 2021–2026

    52.3 °F

  • Average 2021–2026

    62.1 °F

  • Average High 2021–2026

    72.8 °F
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