Half Moon Bay Airport Weather Forecast

    • 47
    • 63

    Mostly Cloudy

    • 46
    • 60

    Partly Sunny

    • 52
    • 62

    Mostly Cloudy

    • 54
    • 62

    Rain Likely

    • 50
    • 61

    Chance Rain

    • 52
    • 61

    Chance Rain

    • 52
    • 61

    Rain Likely

Today 13 Dec San Francisco Peninsula Coast

Sunny late in the morning then becoming partly cloudy. Highs in the mid 60s. South Winds 5 to 10 Mph.

Tonight 13 Dec San Francisco Peninsula Coast

Partly cloudy in the evening then becoming mostly cloudy. Patchy fog in the evening. Areas of fog after midnight. Lows in the mid 40s. South Winds 5 to 10 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 1 December, 2025

    41 °F

  • Average December

    53.1 °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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