Half Moon Bay Weather Forecast

    • 55
    • 63

    Mostly Cloudy

    • 53
    • 62

    Mostly Cloudy

    • 53
    • 61

    Mostly Cloudy

    • 54
    • 60

    Mostly Cloudy

    • 53
    • 62

    Mostly Cloudy

    • 53
    • 62

    Mostly Cloudy

Today 23 Jul San Francisco Peninsula Coast

Mostly cloudy. Highs in the lower 60s. Southwest Winds 5 to 10 Mph.

Tonight 23 Jul San Francisco Peninsula Coast

Cloudy. Patchy fog. A slight chance of drizzle. Lows in the mid 50s. West Winds around 5 Mph.

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Half Moon Bay Temperature Statistics

July Temperature

Half Moon Bay Airport (5 miles)

  • Lowest 4 July, 2025

    50 °F

  • Average July

    56.5 °F

  • Highest 8 July, 2025

    62.6 °F

Climate (2020–Present)

Half Moon Bay Airport (5 miles)

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  • Average Low 2020–2025

    47.9 °F

  • Average 2020–2025

    54.5 °F

  • Average High 2020–2025

    60.4 °F
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