Half Moon Bay - Princeton Weather Forecast

    • 47
    • 62

    Mostly Cloudy

    • 53
    • 65

    Rain

    • 53
    • 63

    Rain

    • 50
    • 64

    Slight Chance Rain

    • 51
    • 65

    Partly Sunny

    • 52
    • 67

    Mostly Cloudy

Today 22 Feb San Francisco Peninsula Coast

Mostly cloudy in the morning then becoming partly cloudy. Highs in the lower 60s. South Winds 10 to 20 Mph.

Tonight 22 Feb San Francisco Peninsula Coast

Partly cloudy in the evening then becoming mostly cloudy. Lows in the upper 40s. Southeast Winds 5 to 10 Mph.

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Half Moon Bay - Princeton Temperature Statistics

February Temperature

Half Moon Bay Airport (0.6 miles)

  • Lowest 18 February, 2026

    39.2 °F

  • Average February

    54.4 °F

  • Highest 3 February, 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

    54.7 °F

  • Average High 2021–2026

    60.6 °F
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