Farallon Islands Weather Forecast

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    Rain

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    Rain

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    Rain

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    Rain

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    Rain Likely

Today 21 Dec San Francisco

Breezy, rain. Highs around 60. South Winds 20 to 30 Mph.

Tonight 21 Dec San Francisco

Breezy, rain. Lows in the mid 50s. South Winds 20 to 30 Mph. Becoming southwest 10 to 20 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Farallon Islands Temperature Statistics

December Temperature

Half Moon Bay Airport (30.4 miles)

  • Lowest 15 December, 2025

    39.2 °F

  • Average December

    53.4 °F

  • Highest 11 December, 2025

    71.6 °F

Climate (2020–Present)

Half Moon Bay Airport (30.4 miles)

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  • Average Low 2020–2025

    48.1 °F

  • Average 2020–2025

    54.5 °F

  • Average High 2020–2025

    60.4 °F
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