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Areas of Severe Thunderstorms and Heat

Scattered severe thunderstorms and excessive rainfall are possible today in the Mid Atlantic, posing a risk for damaging winds and isolated flash flooding. Extreme Heat Warnings are in effect today for northeast Texas into southern Oklahoma and Arkansas. Extreme Heat Warnings are also in effect for the Desert Southwest today into Sunday. 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 NW 8 MPH
Barometer 30.05 in (1017.61 mb)
Dewpoint 61°F (16°C)
Visibility 6.00 mi
Last update 20 Aug 11:15 AM PDT
Extended Forecast for

Half Moon Bay CA

  • Today

    Today: Mostly cloudy, with a high near 64. West wind 6 to 8 mph.

    High: 64 °F

    Mostly Cloudy

  • Tonight

    Tonight: Cloudy, with a low around 56. West wind around 6 mph becoming calm in the evening.

    Low: 56 °F

    Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 63. West wind 3 to 8 mph.

    High: 63 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Cloudy, with a low around 55. West northwest wind 3 to 6 mph.

    Low: 55 °F

    Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 64. West northwest wind 5 to 9 mph.

    High: 64 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 64.

    High: 64 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Sunday Night

    Sunday Night: Patchy fog after 11pm. Otherwise, cloudy, with a low around 56.

    Low: 56 °F

    Patchy Fog

  • Monday

    Monday: Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 63.

    High: 63 °F

    Patchy Fog
    then Mostly
    Cloudy

Detailed Forecast

Today
Mostly cloudy, with a high near 64. West wind 6 to 8 mph.
Tonight
Cloudy, with a low around 56. West wind around 6 mph becoming calm in the evening.
Friday
Mostly cloudy, with a high near 63. West wind 3 to 8 mph.
Friday Night
Cloudy, with a low around 55. West northwest wind 3 to 6 mph.
Saturday
Mostly cloudy, with a high near 64. West northwest wind 5 to 9 mph.
Saturday Night
Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 55.
Sunday
Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 64.
Sunday Night
Patchy fog after 11pm. Otherwise, cloudy, with a low around 56.
Monday
Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 63.
Monday Night
Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 55.
Tuesday
Patchy fog. Otherwise, cloudy, with a high near 63.
Tuesday Night
Patchy fog. Otherwise, cloudy, with a low around 54.
Wednesday
Patchy fog. Otherwise, mostly cloudy, with a high near 65.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Half Moon Bay CA
 37.45°N 122.41°W (Elev. 197 ft)
Last Update:
11:37 am PDT Aug 20, 2026
Forecast Valid:
11am PDT Aug 20, 2026-6pm PDT Aug 26, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation