Coastal and Marine Impacts from Imelda and Humberto as Both Track Away from the Southeast U.S.

Swells and high surf from both Imelda and Humberto are expected to bring dangerous marine and rip current conditions to the east coast of Florida and Georgia today, spreading north along much of the east coast of the U.S. this week. Heavy rainfall north and west of Imelda falling across coastal Florida and Georgia into the Carolinas could cause isolated flash and urban flooding through Tuesday. Read More >

Current conditions at

Half Moon Bay Airport (KHAF)

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

haze

68°F

20°C

Humidity 82%
Wind Speed S 11 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 63°F (17°C)
Visibility 6.00 mi
Last update 29 Sep 03:55 PM PDT
Extended Forecast for

Half Moon Bay CA

  • This Afternoon

    This Afternoon: A 20 percent chance of rain.  Mostly cloudy, with a high near 68. South southwest wind around 9 mph.

    High: 68 °F

    Slight Chance
    Rain

  • Tonight

    Tonight: A 50 percent chance of rain.  Cloudy, with a low around 58. South wind 3 to 7 mph.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 58 °F

    Chance Rain

  • Tuesday

    Tuesday: A 20 percent chance of rain before 11am.  Partly sunny, with a high near 67. South southwest wind 3 to 8 mph.  New precipitation amounts of less than a tenth of an inch possible.

    High: 67 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of rain after 11pm.  Mostly cloudy, with a low around 57. South wind 3 to 5 mph.

    Low: 57 °F

    Chance Rain

  • Wednesday

    Wednesday: Rain likely, mainly before 11am.  Cloudy, with a high near 66. South wind 5 to 8 mph.  Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 66 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain before 11pm.  Cloudy, with a low around 56. New precipitation amounts of less than a tenth of an inch possible.

    Low: 56 °F

    Slight Chance
    Rain then
    Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 66.

    High: 66 °F

    Partly Sunny

  • Thursday Night

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

    Low: 54 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of rain. Mostly cloudy, with a high near 68. South southwest wind around 9 mph.
Tonight
A 50 percent chance of rain. Cloudy, with a low around 58. South wind 3 to 7 mph. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
A 20 percent chance of rain before 11am. Partly sunny, with a high near 67. South southwest wind 3 to 8 mph. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
A 30 percent chance of rain after 11pm. Mostly cloudy, with a low around 57. South wind 3 to 5 mph.
Wednesday
Rain likely, mainly before 11am. Cloudy, with a high near 66. South wind 5 to 8 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
A 20 percent chance of rain before 11pm. Cloudy, with a low around 56. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Partly sunny, with a high near 66.
Thursday Night
Partly cloudy, with a low around 54.
Friday
Sunny, with a high near 67.
Friday Night
Partly cloudy, with a low around 53.
Saturday
Mostly sunny, with a high near 69.
Saturday Night
Partly cloudy, with a low around 53.
Sunday
Mostly sunny, with a high near 68.
Sunday Night
Mostly cloudy, with a low around 53.
Monday
Mostly sunny, with a high near 66.
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ABOUT THIS FORECAST

 
Point Forecast:
Half Moon Bay CA
 37.48°N 122.42°W (Elev. 397 ft)
1:26 pm PDT Sep 29, 2025
4pm PDT Sep 29, 2025-6pm PDT Oct 6, 2025
 
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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