Half Moon Bay - Pillar Point Harbor Weather Forecast

    • 53
    • 63

    Decreasing Clouds

    • 54
    • 68

    Areas Fog

    • 54
    • 71

    Areas Fog

    • 55
    • 69

    Patchy Fog

    • 56
    • 69

    Mostly Cloudy

    • 56
    • 70

    Partly Sunny

Today 28 Sep San Francisco Peninsula Coast

Mostly cloudy in the morning then becoming sunny. A slight chance of drizzle in the morning. Highs in the mid 60s. Northwest Winds 5 to 10 Mph.

Tonight 28 Sep San Francisco Peninsula Coast

Partly cloudy. Lows in the lower 50s. Northwest Winds 5 to 10 Mph.

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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

    61 °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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