Half Moon Bay - Princeton Weather Forecast

    • 57
    • 64

    Mostly Cloudy

    • 55
    • 64

    Mostly Cloudy

    • 55
    • 64

    Areas Fog

    • 56
    • 64

    Mostly Cloudy

    • 56
    • 66

    Partly Sunny

    • 56
    • 64

    Mostly Cloudy

    • 56
    • 63

    Mostly Cloudy

Today 26 Aug San Francisco Peninsula Coast

Partly cloudy. Highs in the upper 60s. Southwest Winds 5 to 10 Mph.

Tonight 26 Aug San Francisco Peninsula Coast

Mostly cloudy. Patchy fog. Lows in the mid 50s. South Winds around 5 Mph.

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Half Moon Bay - Princeton Temperature Statistics

August Temperature

Half Moon Bay Airport (0.6 miles)

  • Lowest 6 August, 2025

    48.2 °F

  • Average August

    58.9 °F

  • Highest 6 August, 2025

    69.8 °F

Climate (2020–Present)

Half Moon Bay Airport (0.6 miles)

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  • Average Low 2020–2025

    47.9 °F

  • Average 2020–2025

    54.5 °F

  • Average High 2020–2025

    60.3 °F
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