Upper Emerald Lake Weather Forecast

    • 57
    • 80

    Sunny

    • 55
    • 78

    Mostly Sunny

    • 54
    • 70

    Partly Sunny

    • 53
    • 71

    Partly Sunny

    • 56
    • 72

    Chance Rain

    • 53
    • 70

    Chance Rain

    • 54
    • 69

    Chance Rain

Today 20 Oct San Francisco Bay Shoreline

Sunny. Highs near 80. Northeast Winds 5 to 10 Mph.

Tonight 20 Oct San Francisco Bay Shoreline

Mostly clear. Lows in the upper 50s. North Winds 5 to 10 Mph.

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Upper Emerald Lake Temperature Statistics

October Temperature

San Carlos Airport (3.7 miles)

  • Lowest 14 October, 2025

    48.2 °F

  • Average October

    61.7 °F

  • Highest 6 October, 2025

    86 °F

Climate (2020–Present)

San Carlos Airport (3.7 miles)

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  • Average Low 2020–2025

    51.2 °F

  • Average 2020–2025

    56.5 °F

  • Average High 2020–2025

    68.1 °F
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