National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

Half Moon Bay Airport (KHAF)

Lat: 37.5136°NLon: 122.4996°WElev: 65.0ft.

Mist

61°F

16°C

Humidity 100%
Wind Speed NNW 16 MPH
Barometer 29.98 in (1015.24 mb)
Dewpoint 61°F (16°C)
Visibility 5.00 mi
Last update 27 Aug 06:35 PM PDT
Extended Forecast for

Half Moon Bay CA

  • Tonight

    Tonight: Mostly cloudy, with a low around 58. West wind 5 to 8 mph.

    Low: 58 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of showers before 11am. Mostly cloudy, with a high near 64. Light west northwest wind increasing to 8 to 13 mph in the morning.

    High: 64 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 56. West wind around 8 mph.

    Low: 56 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 63. Light west northwest wind increasing to 5 to 10 mph in the morning.

    High: 63 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 55. West northwest wind 6 to 9 mph.

    Low: 55 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 62.

    High: 62 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 60.

    High: 60 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Cloudy
    then Patchy
    Fog

Detailed Forecast

Tonight
Mostly cloudy, with a low around 58. West wind 5 to 8 mph.
Friday
A 20 percent chance of showers before 11am. Mostly cloudy, with a high near 64. Light west northwest wind increasing to 8 to 13 mph in the morning.
Friday Night
Mostly cloudy, with a low around 56. West wind around 8 mph.
Saturday
Mostly cloudy, with a high near 63. Light west northwest wind increasing to 5 to 10 mph in the morning.
Saturday Night
Mostly cloudy, with a low around 55. West northwest wind 6 to 9 mph.
Sunday
Mostly cloudy, with a high near 62.
Sunday Night
Mostly cloudy, with a low around 54.
Monday
Mostly cloudy, with a high near 60.
Monday Night
Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 54.
Tuesday
Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 62.
Tuesday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 54.
Wednesday
Patchy fog. Otherwise, mostly cloudy, with a high near 63.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 55.
Thursday
A slight chance of showers. Partly sunny, with a high near 65.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Half Moon Bay CA
 37.47°N 122.45°W (Elev. 7 ft)
Last Update:
1:42 pm PDT Aug 27, 2026
Forecast Valid:
6pm PDT Aug 27, 2026-6pm PDT Sep 3, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

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Chance of Precipitation