Half Moon Bay - Princeton Weather Forecast

    • 51
    • 59

    Mostly Cloudy

    • 51
    • 58

    Mostly Cloudy

    • 54
    • 60

    Mostly Cloudy

    • 53
    • 62

    Areas Fog

    • 53
    • 61

    Areas Fog

    • 53
    • 63

    Patchy Fog

    • 54
    • 62

    Partly Sunny

Today 5 Jul San Francisco Peninsula Coast

Mostly cloudy. Highs in the lower 60s. Northwest Winds 10 to 15 Mph.

Tonight 5 Jul San Francisco Peninsula Coast

Mostly cloudy. Lows around 50. Northwest Winds 5 to 10 Mph.

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Half Moon Bay - Princeton Temperature Statistics

July Temperature

Half Moon Bay Airport (0.6 miles)

  • Lowest 1 July, 2025

    51.8 °F

  • Average July

    54.8 °F

  • Highest 1 July, 2025

    60.8 °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

    60.4 °F
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