Downtown San Jose Weather Forecast

    • 56
    • 87

    Mostly Sunny

    • 54
    • 86

    Mostly Sunny

    • 54
    • 80

    Partly Sunny

    • 54
    • 79

    Partly Sunny

    • 55
    • 79

    Partly Sunny

    • 54
    • 79

    Partly Sunny

Today 26 Sep Santa Clara Valley Including San Jose

Partly cloudy in the morning then becoming sunny. Patchy dense fog in the morning. Visibility one quarter mile or less at Times in the morning. Highs in the mid 80s to lower 90s. Northwest Winds around 5 Mph increasing to 10 to 20 Mph in the afternoon.

Tonight 26 Sep Santa Clara Valley Including San Jose

Mostly clear. Lows in the mid 50s. Northwest Winds 10 to 20 Mph. Becoming southeast around 5 Mph after midnight.

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Downtown San Jose Temperature Statistics

September Temperature

San Jose, San Jose International Airport (2.5 miles)

  • Lowest 16 September, 2018

    50 °F

  • Average September

    65 °F

  • Highest 20 September, 2018

    91 °F

Climate (2010–Present)

San Jose, San Jose International Airport (2.5 miles)

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  • Average Low 2010–Present

    52.2 °F

  • Average 2010–Present

    61 °F

  • Average High 2010–Present

    71.8 °F
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