Half Moon Bay Weather Forecast

    • 44
    • 62

    Mostly Sunny

    • 45
    • 62

    Mostly Sunny

    • 47
    • 65

    Mostly Sunny

    • 47
    • 66

    Mostly Sunny

    • 45
    • 66

    Mostly Sunny

    • 46
    • 63

    Partly Sunny

Today 8 Dec San Francisco Peninsula Coast

Sunny. Highs in the lower 60s. North Winds 5 to 10 Mph.

Tonight 8 Dec San Francisco Peninsula Coast

Mostly clear in the evening then becoming partly cloudy. Patchy fog after midnight. Lows in the mid to upper 40s. North Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Half Moon Bay Temperature Statistics

December Temperature

Half Moon Bay Airport (5 miles)

  • Lowest 1 December, 2025

    41 °F

  • Average December

    52.1 °F

  • Highest 2 December, 2025

    66.2 °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

    48 °F

  • Average 2020–2025

    54.5 °F

  • Average High 2020–2025

    60.4 °F
Get WillyWeather+ to remove ads