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

Atmospheric River Continues Areas of Heavy Rain and Snow for California This Weekend

An atmospheric river will continue to bring gusty winds, moderate to heavy rainfall, and potential flooding to southern California and the southern Great Basin through Sunday. Periods of heavy snow will continue as well above 7,000 feet over the Sierra Nevada mountains associated with this atmospheric river. Read More >

Current conditions at

Half Moon Bay Airport (KHAF)

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

Clear

63°F

17°C

Humidity 72%
Wind Speed NNW 3 MPH
Barometer 29.78 in (1008.47 mb)
Dewpoint 54°F (12°C)
Visibility 7.00 mi
Last update 15 Nov 11:55 AM PST
Extended Forecast for

Half Moon Bay CA

  • This Afternoon

    This Afternoon: Rain likely, mainly after 4pm. Mostly cloudy, with a temperature falling to around 57 by 5pm. West northwest wind around 6 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 62 °F⇓

    Rain Likely

  • Tonight

    Tonight: Rain. Low around 52. Southwest wind around 6 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 52 °F

    Rain

  • Sunday

    Sunday: Rain. High near 60. South southwest wind 7 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 60 °F

    Rain

  • Sunday Night

    Sunday Night: Rain and possibly a thunderstorm before 7pm, then showers and possibly a thunderstorm between 7pm and 10pm, then rain after 10pm. Low around 50. Southwest wind 15 to 18 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 50 °F

    Showers

  • Monday

    Monday: Rain likely, mainly before 4pm. Mostly cloudy, with a high near 58. West wind 9 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 58 °F

    Rain Likely

  • Monday Night

    Monday Night: A 30 percent chance of rain before 10pm. Mostly cloudy, with a low around 48. New precipitation amounts of less than a tenth of an inch possible.

    Low: 48 °F

    Chance Rain
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 48.

    Low: 48 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain after 4pm. Partly sunny, with a high near 58.

    High: 58 °F

    Partly Sunny
    then Chance
    Rain

Detailed Forecast

This Afternoon
Rain likely, mainly after 4pm. Mostly cloudy, with a temperature falling to around 57 by 5pm. West northwest wind around 6 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain. Low around 52. Southwest wind around 6 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
Rain. High near 60. South southwest wind 7 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Rain and possibly a thunderstorm before 7pm, then showers and possibly a thunderstorm between 7pm and 10pm, then rain after 10pm. Low around 50. Southwest wind 15 to 18 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Monday
Rain likely, mainly before 4pm. Mostly cloudy, with a high near 58. West wind 9 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
A 30 percent chance of rain before 10pm. Mostly cloudy, with a low around 48. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Mostly sunny, with a high near 59.
Tuesday Night
Mostly cloudy, with a low around 48.
Wednesday
A chance of rain after 4pm. Partly sunny, with a high near 58.
Wednesday Night
Rain likely, mainly after 10pm. Mostly cloudy, with a low around 50.
Thursday
Rain likely. Mostly cloudy, with a high near 58.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 48.
Friday
A chance of rain. Partly sunny, with a high near 59.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Half Moon Bay CA
 37.45°N 122.44°W (Elev. 43 ft)
Last Update:
2:52 am PST Nov 15, 2025
Forecast Valid:
12pm PST Nov 15, 2025-6pm PST Nov 21, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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