Half Moon Bay - Pillar Point Harbor Weather Forecast

    • 56
    • 64

    Increasing Clouds

    • 55
    • 64

    Mostly Cloudy

    • 55
    • 68

    Partly Sunny

    • 55
    • 66

    Mostly Cloudy

    • 55
    • 66

    Areas Fog

    • 56
    • 68

    Areas Fog

    • 56
    • 68

    Mostly Cloudy

Today 12 Sep San Francisco Peninsula Coast

Sunny. Highs in the upper 60s. Northwest Winds 10 to 15 Mph.

Tonight 12 Sep San Francisco Peninsula Coast

Partly cloudy in the evening then becoming mostly cloudy. Lows in the mid 50s. Northwest Winds 10 to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Half Moon Bay - Pillar Point Harbor Temperature Statistics

September Temperature

Half Moon Bay Airport (1.2 miles)

  • Lowest 8 September, 2026

    50 °F

  • Average September

    63 °F

  • Highest 9 September, 2026

    89.6 °F

Climate (2021–2026)

Half Moon Bay Airport (1.2 miles)

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  • Average Low 2021–2026

    48.8 °F

  • Average 2021–2026

    55.2 °F

  • Average High 2021–2026

    61.1 °F
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