Downtown San Jose Weather Forecast

    • 44
    • 74

    Mostly Sunny

    • 43
    • 70

    Partly Sunny

    • 50
    • 77

    Sunny

    • 53
    • 83

    Mostly Sunny

    • 51
    • 82

    Mostly Sunny

    • 56
    • 83

    Mostly Sunny

    • 59
    • 87

    Partly Sunny

Today 9 Mar Santa Clara Valley Including San Jose

Sunny. Highs in the lower 70s. Northwest Winds 5 to 10 Mph.

Tonight 9 Mar Santa Clara Valley Including San Jose

Mostly clear in the evening then becoming partly cloudy. Patchy fog after midnight. Lows in the mid 40s. Northwest Winds 5 to 10 Mph in the evening. Becoming light.

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Downtown San Jose Temperature Statistics

March Temperature

San Jose, San Jose International Airport (2.5 miles)

  • Lowest 5 March, 2026

    46 °F

  • Average March

    59.3 °F

  • Highest 7 March, 2026

    73.9 °F

Climate (2021–Present)

San Jose, San Jose International Airport (2.5 miles)

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  • Average Low 2021–2026

    52 °F

  • Average 2021–2026

    61.7 °F

  • Average High 2021–2026

    72.5 °F
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