Lake Lucerne Weather Forecast

    • 56
    • 60

    Increasing Clouds

    • 56
    • 60

    Mostly Cloudy

    • 56
    • 60

    Mostly Cloudy

    • 58
    • 63

    Partly Sunny

    • 59
    • 63

    Mostly Cloudy

    • 61
    • 66

    Slight Chance Rain

Today 4 Sep San Francisco Peninsula Coast

Mostly cloudy in the morning then becoming partly cloudy. Patchy fog in the morning. Highs in the mid 60s. Northwest Winds 5 to 10 Mph.

Tonight 4 Sep San Francisco Peninsula Coast

Partly cloudy in the evening then becoming mostly cloudy. Patchy fog after midnight. Lows in the mid 50s. Northwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Lucerne Temperature Statistics

September Temperature

Half Moon Bay Airport (20.5 miles)

  • Lowest 2 September, 2026

    55.4 °F

  • Average September

    61.7 °F

  • Highest 1 September, 2026

    66.2 °F

Climate (2021–2026)

Half Moon Bay Airport (20.5 miles)

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  • Average Low 2021–2026

    48.7 °F

  • Average 2021–2026

    55.2 °F

  • Average High 2021–2026

    61.1 °F
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