Heat Persists in the South Central U.S. and Southwest; Heavy rains in the Desert Southwest and Central Plains

Sweltering heat remains across the South-Central Plains, Lower/Middle Mississippi Valley, and the Southwest this week with limited nighttime relief. Thunderstorms will bring heavy rainfall leading to localized flash flooding in portions of the Desert Southwest and central Plains. Isolated strong to severe thunderstorms are possible across portions of the central Plains into the Northeast. Read More >

Current conditions at

Half Moon Bay Airport (KHAF)

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

Clear

57°F

14°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 30.03 in (1016.93 mb)
Dewpoint 55°F (13°C)
Visibility 9.00 mi
Last update 09 Sep 03:55 AM PDT
Extended Forecast for

Half Moon Bay CA

Heat Advisory September 9, 04:19am until September 10, 10:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 9, 04:19am until September 10, 10:00pm

    NOW until 10:00pm Thu

    Heat Advisory

  • Today

    High: 86 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 63. Northwest wind around 5 mph becoming calm  in the evening.

    Low: 63 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Partly sunny, with a high near 75. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 75 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 57. West wind 5 to 7 mph becoming calm  in the evening.

    Low: 57 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 68. Calm wind becoming west 5 to 9 mph in the morning.

    High: 68 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

Detailed Forecast

Today
Mostly sunny, with a high near 86. Calm wind becoming northwest 5 to 8 mph in the afternoon.
Tonight
Increasing clouds, with a low around 63. Northwest wind around 5 mph becoming calm in the evening.
Thursday
Partly sunny, with a high near 75. Calm wind becoming west 5 to 7 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 57. West wind 5 to 7 mph becoming calm in the evening.
Friday
Partly sunny, with a high near 68. Calm wind becoming west 5 to 9 mph in the morning.
Friday Night
Mostly cloudy, with a low around 55.
Saturday
Mostly sunny, with a high near 64.
Saturday Night
Partly cloudy, with a low around 54.
Sunday
Sunny, with a high near 68.
Sunday Night
Partly cloudy, with a low around 53.
Monday
Mostly sunny, with a high near 68.
Monday Night
Mostly cloudy, with a low around 54.
Tuesday
Mostly cloudy, with a high near 65.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Half Moon Bay CA
 37.48°N 122.42°W (Elev. 397 ft)
3:16 am PDT Sep 9, 2026
4am PDT Sep 9, 2026-6pm PDT Sep 15, 2026
 
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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