Steinberger Slough - Mariner Park Weather Forecast

    • 40
    • 56

    Mostly Sunny

    • 40
    • 58

    Mostly Sunny

    • 44
    • 59

    Partly Sunny

    • 48
    • 58

    Chance Rain

    • 51
    • 58

    Rain Likely

    • 51
    • 60

    Rain Likely

    • 48
    • 58

    Chance Rain

Today 28 Dec San Francisco Bay Shoreline

Partly cloudy in the morning then becoming sunny. Highs in the upper 50s. Northeast Winds 5 to 15 Mph.

Tonight 28 Dec San Francisco Bay Shoreline

Mostly clear. Lows near 40. Northeast Winds 5 to 10 Mph.

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Steinberger Slough - Mariner Park Temperature Statistics

December Temperature

San Carlos Airport (0 miles)

  • Lowest 12 December, 2025

    39.2 °F

  • Average December

    51.6 °F

  • Highest 19 December, 2025

    66.2 °F

Climate (2020–Present)

San Carlos Airport (0 miles)

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  • Average Low 2020–2025

    51.4 °F

  • Average 2020–2025

    56.6 °F

  • Average High 2020–2025

    68.1 °F
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