Half Moon Bay - Princeton Weather Forecast

    • 43
    • 63

    Mostly Sunny

    • 45
    • 62

    Mostly Cloudy

    • 45
    • 62

    Mostly Sunny

    • 48
    • 62

    Chance Rain

    • 48
    • 62

    Chance Rain

    • 48
    • 63

    Partly Sunny

    • 49
    • 63

    Partly Sunny

Today 24 Jan San Francisco Peninsula Coast

Sunny. Highs in the lower 60s. Northeast Winds 5 to 15 Mph.

Tonight 24 Jan San Francisco Peninsula Coast

Clear in the evening then becoming partly cloudy. Lows in the 40s. Northeast Winds 10 to 20 Mph.

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Half Moon Bay - Princeton Temperature Statistics

January Temperature

Half Moon Bay Airport (0.6 miles)

  • Lowest 10 January, 2026

    39.2 °F

  • Average January

    54.9 °F

  • Highest 15 January, 2026

    73.4 °F

Climate (2021–Present)

Half Moon Bay Airport (0.6 miles)

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  • Average Low 2021–2026

    48.2 °F

  • Average 2021–2026

    54.6 °F

  • Average High 2021–2026

    60.5 °F
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