Half Moon Bay - Princeton Weather Forecast

    • 48
    • 66

    Decreasing Clouds

    • 48
    • 69

    Mostly Sunny

    • 48
    • 63

    Partly Sunny

    • 49
    • 64

    Mostly Cloudy

    • 49
    • 67

    Mostly Cloudy

    • 48
    • 64

    Partly Sunny

Today 23 Mar San Francisco Peninsula Coast

Partly cloudy in the morning then becoming sunny. Highs in the upper 60s. Northwest Winds 5 to 10 Mph.

Tonight 23 Mar San Francisco Peninsula Coast

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

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Half Moon Bay - Princeton Temperature Statistics

March Temperature

Half Moon Bay Airport (0.6 miles)

  • Lowest 11 March, 2026

    41 °F

  • Average March

    56.3 °F

  • Highest 16 March, 2026

    78.8 °F

Climate (2021–Present)

Half Moon Bay Airport (0.6 miles)

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  • Average Low 2021–2026

    48.3 °F

  • Average 2021–2026

    54.8 °F

  • Average High 2021–2026

    60.8 °F
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