Steinberger Slough - Mariner Park Weather Forecast

    • 47
    • 59

    Increasing Clouds

    • 47
    • 61

    Decreasing Clouds

    • 48
    • 62

    Partly Sunny

    • 49
    • 62

    Partly Sunny

    • 48
    • 65

    Partly Sunny

    • 48
    • 65

    Mostly Sunny

    • 48
    • 65

    Mostly Sunny

Today 6 Dec San Francisco Bay Shoreline

Sunny. Highs in the upper 50s. Northwest Winds 5 to 10 Mph.

Tonight 6 Dec San Francisco Bay Shoreline

Mostly clear in the evening then becoming partly cloudy. Lows in the mid 40s. Northwest Winds around 5 Mph.

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Steinberger Slough - Mariner Park Temperature Statistics

December Temperature

San Carlos Airport (0 miles)

  • Lowest 4 December, 2025

    42.8 °F

  • Average December

    48.6 °F

  • Highest 3 December, 2025

    64.4 °F

Climate (2020–Present)

San Carlos Airport (0 miles)

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  • Average Low 2020–2025

    51.3 °F

  • Average 2020–2025

    56.6 °F

  • Average High 2020–2025

    68.1 °F
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