Half Moon Bay - Princeton Weather Forecast

    • 58
    • 63

    Increasing Clouds

    • 58
    • 64

    Mostly Cloudy

    • 56
    • 64

    Mostly Cloudy

    • 55
    • 64

    Partly Sunny

    • 56
    • 66

    Partly Sunny

    • 56
    • 66

    Partly Sunny

    • 55
    • 66

    Partly Sunny

Today 27 Jul San Francisco Peninsula Coast

Mostly cloudy late in the morning then becoming partly cloudy. Highs in the mid 60s. Northwest Winds 10 to 15 Mph.

Tonight 27 Jul San Francisco Peninsula Coast

Partly cloudy in the evening then becoming mostly cloudy. Lows in the upper 50s. Northwest Winds 5 to 15 Mph.

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Half Moon Bay - Princeton Temperature Statistics

July Temperature

Half Moon Bay Airport (0.6 miles)

  • Lowest 16 July, 2026

    46.4 °F

  • Average July

    58.3 °F

  • Highest 21 July, 2026

    78.8 °F

Climate (2021–2026)

Half Moon Bay Airport (0.6 miles)

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  • Average Low 2021–2026

    48.6 °F

  • Average 2021–2026

    55 °F

  • Average High 2021–2026

    61 °F
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