Half Moon Bay Airport Weather Forecast

    • 50
    • 68

    Increasing Clouds

    • 49
    • 61

    Partly Sunny

    • 50
    • 61

    Partly Sunny

    • 50
    • 60

    Mostly Cloudy

    • 51
    • 59

    Mostly Cloudy

    • 50
    • 59

    Mostly Cloudy

Today 19 May San Francisco Peninsula Coast

Sunny. Highs in the mid 70s. North Winds 5 to 10 Mph.

Tonight 19 May San Francisco Peninsula Coast

Mostly clear in the evening then becoming partly cloudy. Lows in the upper 40s. West Winds 5 to 10 Mph.

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Half Moon Bay Airport Temperature Statistics

May Temperature

Half Moon Bay Airport (0 miles)

  • Lowest 14 May, 2026

    46.4 °F

  • Average May

    55 °F

  • Highest 6 May, 2026

    62.6 °F

Climate (2021–Present)

Half Moon Bay Airport (0 miles)

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  • Average Low 2021–2026

    48.5 °F

  • Average 2021–2026

    55 °F

  • Average High 2021–2026

    60.9 °F
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