Half Moon Bay Weather Forecast

    • 53
    • 63

    Mostly Cloudy

    • 52
    • 63

    Mostly Cloudy

    • 54
    • 64

    Mostly Cloudy

    • 52
    • 63

    Chance Rain

    • 51
    • 62

    Slight Chance Rain

    • 51
    • 64

    Partly Sunny

Today 22 Oct San Francisco Peninsula Coast

Mostly cloudy. Highs in the mid 60s. Southwest Winds 5 to 15 Mph.

Tonight 22 Oct San Francisco Peninsula Coast

Cloudy. A slight chance of Showers. Lows in the mid 50s. South Winds 5 to 15 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Half Moon Bay Temperature Statistics

October Temperature

Half Moon Bay Airport (5 miles)

  • Lowest 14 October, 2025

    42.8 °F

  • Average October

    58.7 °F

  • Highest 18 October, 2025

    73.4 °F

Climate (2020–Present)

Half Moon Bay Airport (5 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    47.9 °F

  • Average 2020–2025

    54.5 °F

  • Average High 2020–2025

    60.4 °F
Get WillyWeather+ to remove ads