Half Moon Bay Airport Weather Forecast

    • 51
    • 60

    Rain Showers

    • 48
    • 60

    Rain

    • 45
    • 57

    Slight Chance Rain

    • 44
    • 56

    Mostly Sunny

    • 44
    • 58

    Mostly Sunny

    • 46
    • 59

    Partly Sunny

Today 25 Dec San Francisco Peninsula Coast

Breezy. Showers and a slight chance of Thunderstorms. Some Thunderstorms may be severe with damaging Winds and heavy rainfall. Highs in the upper 50s. South Winds 20 to 30 Mph. Gusts up to 50 Mph in the afternoon.

Tonight 25 Dec San Francisco Peninsula Coast

Breezy. Showers and a slight chance of Thunderstorms in the Evening, then rain after midnight. Some Thunderstorms may be severe with damaging Winds and heavy rainfall. Lows around 50. Southwest Winds 20 to 30 Mph with Gusts to around 45 Mph.

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Half Moon Bay Airport Temperature Statistics

December Temperature

Half Moon Bay Airport (0 miles)

  • Lowest 15 December, 2025

    39.2 °F

  • Average December

    54.3 °F

  • Highest 11 December, 2025

    71.6 °F

Climate (2020–Present)

Half Moon Bay Airport (0 miles)

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  • Average Low 2020–2025

    48.1 °F

  • Average 2020–2025

    54.6 °F

  • Average High 2020–2025

    60.4 °F
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