Downtown San Jose Weather Forecast

    • 40
    • 63

    Mostly Sunny

    • 40
    • 67

    Mostly Sunny

    • 44
    • 68

    Mostly Sunny

    • 46
    • 70

    Mostly Sunny

    • 46
    • 70

    Mostly Sunny

    • 46
    • 70

    Partly Sunny

    • 46
    • 70

    Partly Sunny

Today 12 Jan Santa Clara Valley Including San Jose

Sunny. Highs in the lower 60s. Northwest Winds around 5 Mph.

Tonight 12 Jan Santa Clara Valley Including San Jose

Clear. Lows in the lower 40s. North Winds around 5 Mph. Becoming east after midnight.

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Downtown San Jose Temperature Statistics

January Temperature

San Jose, San Jose International Airport (2.5 miles)

  • Lowest 10 January, 2026

    35.1 °F

  • Average January

    53.3 °F

  • Highest 2 January, 2026

    63 °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

    61.6 °F

  • Average High 2021–2026

    72.4 °F
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