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    Chance Rain

Today 21 Dec San Francisco

Rain. Highs around 60. South Winds around 20 Mph with Gusts to around 40 Mph.

Tonight 21 Dec San Francisco

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

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Main Post Temperature Statistics

December Temperature

San Francisco, San Francisco International Airport (13 miles)

  • Lowest 15 December, 2025

    44.1 °F

  • Average December

    50.6 °F

  • Highest 19 December, 2025

    64 °F

Climate (2020–Present)

San Francisco, San Francisco International Airport (13 miles)

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  • Average Low 2020–2025

    52.4 °F

  • Average 2020–2025

    58.3 °F

  • Average High 2020–2025

    66.5 °F
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