Santa Clara Weather Forecast

    • 49
    • 61

    Mostly Cloudy

    • 54
    • 63

    Rain

    • 55
    • 59

    Rain

    • 55
    • 61

    Rain

    • 51
    • 60

    Rain

    • 49
    • 58

    Rain

    • 49
    • 57

    Rain

Today 18 Dec San Francisco Bay Shoreline

Partly cloudy. Highs around 60. Light Winds.

Tonight 18 Dec San Francisco Bay Shoreline

Mostly cloudy. Patchy fog. A slight chance of rain. Lows in the lower 50s. West Winds up to 5 Mph. Becoming south around 5 Mph after midnight.

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Santa Clara Temperature Statistics

December Temperature

Hayward, Hayward Air Terminal (0.6 miles)

  • Lowest 3 December, 2025

    41 °F

  • Average December

    48.2 °F

  • Highest 3 December, 2025

    64.9 °F

Climate (2020–Present)

Hayward, Hayward Air Terminal (0.6 miles)

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  • Average Low 2020–2025

    52 °F

  • Average 2020–2025

    59.2 °F

  • Average High 2020–2025

    68.8 °F
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