Farallon Islands Weather Forecast

    • 59
    • 62

    Chance Rain

    • 58
    • 62

    Chance Rain Showers

    • 58
    • 61

    Partly Sunny

    • 58
    • 61

    Partly Sunny

    • 59
    • 62

    Mostly Cloudy

    • 57
    • 62

    Partly Sunny

Today 9 Sep San Francisco

Mostly cloudy. A chance of Showers. Highs in the mid 60s to lower 70s. Southwest Winds 5 to 15 Mph.

Tonight 9 Sep San Francisco

Mostly cloudy. A slight chance of Showers in the Evening, then a chance of Showers after midnight. Lows in the lower 60s. Southwest Winds 5 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Farallon Islands Temperature Statistics

September Temperature

Half Moon Bay Airport (30.4 miles)

  • Lowest 1 September, 2025

    51.8 °F

  • Average September

    61.1 °F

  • Highest 7 September, 2025

    69.8 °F

Climate (2020–Present)

Half Moon Bay Airport (30.4 miles)

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  • Average Low 2020–2025

    47.9 °F

  • Average 2020–2025

    54.5 °F

  • Average High 2020–2025

    60.4 °F
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