San Francisco Bay - Bay Slough Weather Forecast

    • 49
    • 65

    Increasing Clouds

    • 50
    • 68

    Partly Sunny

    • 50
    • 68

    Mostly Cloudy

    • 50
    • 64

    Partly Sunny

    • 50
    • 62

    Slight Chance Rain

    • 51
    • 65

    Mostly Sunny

Today 27 Oct San Francisco Bay Shoreline

Mostly cloudy in the morning then becoming partly cloudy. Highs in the mid 60s. West Winds 10 to 20 Mph.

Tonight 27 Oct San Francisco Bay Shoreline

Mostly clear except patchy fog after midnight. Lows in the mid 40s to lower 50s. West Winds 10 to 20 Mph becoming northeast up to 5 Mph after midnight.

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San Francisco Bay - Bay Slough Temperature Statistics

October Temperature

San Carlos Airport (1.9 miles)

  • Lowest 11 October, 2026

    48.2 °F

  • Average October

    61.6 °F

  • Highest 6 October, 2026

    89.6 °F

Climate (2021–2026)

San Carlos Airport (1.9 miles)

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  • Average Low 2021–2026

    51.8 °F

  • Average 2021–2026

    57 °F

  • Average High 2021–2026

    68.3 °F
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