Farallon Islands Weather Forecast

    • 57
    • 62

    Rain Showers Likely

    • 55
    • 61

    Rain Showers Likely

    • 56
    • 61

    Mostly Sunny

    • 56
    • 62

    Partly Sunny

    • 57
    • 62

    Mostly Cloudy

    • 56
    • 61

    Mostly Cloudy

    • 56
    • 61

    Mostly Cloudy

Today 21 Oct San Francisco

Mostly cloudy. Highs in the 60s.

Tonight 21 Oct San Francisco

A chance of Showers in the Evening, then Showers likely after midnight. Lows in the upper 50s. Northwest Winds 5 to 10 Mph.

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Farallon Islands Temperature Statistics

October Temperature

Half Moon Bay Airport (30.4 miles)

  • Lowest 13 October, 2026

    44.6 °F

  • Average October

    60.4 °F

  • Highest 15 October, 2026

    86 °F

Climate (2021–2026)

Half Moon Bay Airport (30.4 miles)

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  • Average Low 2021–2026

    48.8 °F

  • Average 2021–2026

    55.2 °F

  • Average High 2021–2026

    61.2 °F
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