Half Moon Bay Airport Weather Forecast

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    • 58

    Chance Rain Showers

    • 52
    • 60

    Chance Rain Showers

    • 51
    • 58

    Mostly Cloudy

    • 50
    • 58

    Partly Sunny

    • 51
    • 61

    Mostly Sunny

    • 52
    • 63

    Partly Sunny

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    • 62

    Partly Sunny

Today 27 May San Francisco Peninsula Coast

Partly cloudy late in the morning then becoming mostly cloudy. Highs in the upper 50s. Southwest Winds 5 to 10 Mph.

Tonight 27 May San Francisco Peninsula Coast

Cloudy. A chance of Showers. Patchy fog after midnight. Lows in the upper 40s. West Winds 5 to 10 Mph becoming south after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Half Moon Bay Airport Temperature Statistics

May Temperature

Half Moon Bay Airport (0 miles)

  • Lowest 19 May, 2026

    42.8 °F

  • Average May

    55.2 °F

  • Highest 18 May, 2026

    73.4 °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

    61 °F
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