Half Moon Bay Airport Weather Forecast

    • 48
    • 61

    Chance Rain

    • 51
    • 60

    Increasing Clouds

    • 52
    • 61

    Rain

    • 53
    • 60

    Rain Showers

    • 53
    • 61

    Rain

    • 50
    • 60

    Rain Likely

    • 50
    • 59

    Rain

Today 17 Dec San Francisco Peninsula Coast

Mostly cloudy. A chance of rain. Highs in the mid 60s. Northwest Winds around 5 Mph.

Tonight 17 Dec San Francisco Peninsula Coast

Partly cloudy. Patchy dense fog in the evening. Areas of dense fog after midnight. Patchy drizzle. Lows in the upper 40s. North Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Half Moon Bay Airport Temperature Statistics

December Temperature

Half Moon Bay Airport (0 miles)

  • Lowest 15 December, 2025

    39.2 °F

  • Average December

    52.9 °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 °F

  • Average 2020–2025

    54.5 °F

  • Average High 2020–2025

    60.4 °F
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