Sugarloaf Weather Forecast

    • 60
    • 90

    Becoming Sunny

    • 59
    • 90

    Sunny

    • 59
    • 83

    Mostly Sunny

    • 59
    • 76

    Partly Sunny

    • 59
    • 77

    Mostly Sunny

    • 58
    • 76

    Mostly Sunny

Today 15 Sep San Francisco Bay Shoreline

Partly cloudy in the morning then becoming sunny. Highs in the 80s to lower 90s. Light Winds. Becoming northwest 10 to 15 Mph in the afternoon.

Tonight 15 Sep San Francisco Bay Shoreline

Clear. Lows in the mid 60s. West Winds 5 to 10 Mph in the evening. Becoming light.

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Sugarloaf Temperature Statistics

September Temperature

San Carlos Airport (3.1 miles)

  • Lowest 4 September, 2025

    59 °F

  • Average September

    66.1 °F

  • Highest 1 September, 2025

    89.6 °F

Climate (2020–Present)

San Carlos Airport (3.1 miles)

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  • Average Low 2020–2025

    51.2 °F

  • Average 2020–2025

    56.5 °F

  • Average High 2020–2025

    68.2 °F
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