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

59°F

15°C

Humidity 100%
Wind Speed NNW 9 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 59°F (15°C)
Visibility 6.00 mi
Last update 27 Aug 11:35 PM PDT
Extended Forecast for

Half Moon Bay CA

  • Tonight

    Tonight: Cloudy, with a low around 57. West southwest wind 3 to 5 mph.

    Low: 57 °F

    Cloudy

  • Friday

    Friday: A 20 percent chance of showers before 11am. Mostly cloudy, with a high near 63. Light west wind increasing to 5 to 9 mph in the morning.

    High: 63 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 54. West wind 3 to 7 mph.

    Low: 54 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly cloudy, with a high near 62. West wind 5 to 10 mph.

    High: 62 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 54. West northwest wind 7 to 9 mph, with gusts as high as 18 mph.

    Low: 54 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 62.

    High: 62 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 60.

    High: 60 °F

    Mostly Cloudy

  • Monday Night

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

    Low: 54 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Cloudy, with a low around 57. West southwest wind 3 to 5 mph.
Friday
A 20 percent chance of showers before 11am. Mostly cloudy, with a high near 63. Light west wind increasing to 5 to 9 mph in the morning.
Friday Night
Increasing clouds, with a low around 54. West wind 3 to 7 mph.
Saturday
Mostly cloudy, with a high near 62. West wind 5 to 10 mph.
Saturday Night
Mostly cloudy, with a low around 54. West northwest wind 7 to 9 mph, with gusts as high as 18 mph.
Sunday
Partly sunny, with a high near 62.
Sunday Night
Mostly cloudy, with a low around 53.
Monday
Mostly cloudy, with a high near 60.
Monday Night
Mostly cloudy, with a low around 54.
Tuesday
Mostly cloudy, with a high near 62.
Tuesday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 54.
Wednesday
Patchy fog. Otherwise, partly sunny, with a high near 63.
Wednesday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 54.
Thursday
Patchy fog. Otherwise, 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
 37.48°N 122.42°W (Elev. 397 ft)
Last Update:
11:26 pm PDT Aug 27, 2026
Forecast Valid:
11pm PDT Aug 27, 2026-6pm PDT Sep 3, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation