Mussell Rock Weather Forecast

    • 56
    • 63

    Increasing Clouds

    • 56
    • 61

    Cloudy

    • 55
    • 61

    Mostly Cloudy

    • 55
    • 62

    Mostly Cloudy

    • 57
    • 66

    Mostly Cloudy

    • 57
    • 68

    Partly Sunny

    • 56
    • 64

    Mostly Cloudy

Today 19 Sep San Francisco Peninsula Coast

Partly cloudy. Highs in the upper 60s. Northwest Winds around 10 Mph.

Tonight 19 Sep San Francisco Peninsula Coast

Mostly cloudy. Lows in the mid 50s. Northwest Winds 5 to 10 Mph.

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Mussell Rock Temperature Statistics

September Temperature

Half Moon Bay Airport (12.4 miles)

  • Lowest 8 September, 2026

    50 °F

  • Average September

    62 °F

  • Highest 9 September, 2026

    89.6 °F

Climate (2021–2026)

Half Moon Bay Airport (12.4 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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