Gardner Weather Forecast

    • 64
    • 91

    Increasing Clouds

    • 64
    • 85

    Chance Rain Showers

    • 61
    • 81

    Chance Rain Showers

    • 61
    • 83

    Mostly Sunny

    • 63
    • 86

    Mostly Sunny

    • 64
    • 88

    Chance Rain Showers

Today 17 Sep Santa Clara Valley Including San Jose

Sunny. Highs in the upper 80s to mid 90s. Light Winds. Becoming northwest 5 to 10 Mph in the afternoon.

Tonight 17 Sep Santa Clara Valley Including San Jose

Partly cloudy in the evening then becoming mostly cloudy. Lows in the lower 60s. Northwest Winds 5 to 10 Mph in the evening. Becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Gardner Temperature Statistics

September Temperature

San Jose, San Jose International Airport (3.1 miles)

  • Lowest 3 September, 2025

    60.1 °F

  • Average September

    68.9 °F

  • Highest 15 September, 2025

    90 °F

Climate (2020–Present)

San Jose, San Jose International Airport (3.1 miles)

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  • Average Low 2020–2025

    51.8 °F

  • Average 2020–2025

    61.6 °F

  • Average High 2020–2025

    72.6 °F
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