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

Tracking Atmospheric River for California; Record Temperatures Further East

An atmospheric river will bring gusty to high winds, moderate to heavy rainfall, and potential flooding to California today through Saturday. Heavy snow will be possible over the Sierra Nevada mountains into Friday associated with this atmospheric river. East of these impacts dozens of record high maximum and high minimum temperatures may be broken or tied today and Friday. Read More >

Hazardous Weather Conditions

Current conditions at

Half Moon Bay Airport (KHAF)

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

light rain,mist

59°F

15°C

Humidity 100%
Wind Speed SSE 6 MPH
Barometer 29.83 in (1010.16 mb)
Dewpoint 59°F (15°C)
Visibility 2.50 mi
Last update 13 Nov 02:55 PM PST
Extended Forecast for

Half Moon Bay CA

  • This Afternoon

    This Afternoon: Rain. Steady temperature around 57. South wind around 10 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 57 °F

    Rain

  • Tonight

    Tonight: Rain likely, mainly before 10pm. Cloudy, with a low around 50. South wind 5 to 8 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 50 °F

    Rain Likely
    then Chance
    Rain

  • Friday

    Friday: A 30 percent chance of rain, mainly before 10am. Mostly sunny, with a high near 61. South southwest wind around 6 mph.

    High: 61 °F

    Chance Rain

  • Friday Night

    Friday Night: Partly cloudy, with a low around 48. Light and variable wind.

    Low: 48 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of rain after 10am. Mostly cloudy, with a high near 61. Light and variable wind becoming northwest 5 to 7 mph in the morning. New precipitation amounts of less than a tenth of an inch possible.

    High: 61 °F

    Slight Chance
    Rain

  • Saturday Night

    Saturday Night: A 50 percent chance of rain. Cloudy, with a low around 51. New precipitation amounts of less than a tenth of an inch possible.

    Low: 51 °F

    Chance Rain

  • Sunday

    Sunday: Rain likely, mainly after 10am. Cloudy, with a high near 60. Chance of precipitation is 70%.

    High: 60 °F

    Rain Likely

  • Sunday Night

    Sunday Night: Rain likely. Cloudy, with a low around 49.

    Low: 49 °F

    Rain Likely

  • Monday

    Monday: A chance of rain, mainly before 4pm. Partly sunny, with a high near 57.

    High: 57 °F

    Chance Rain

Detailed Forecast

This Afternoon
Rain. Steady temperature around 57. South wind around 10 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain likely, mainly before 10pm. Cloudy, with a low around 50. South wind 5 to 8 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 30 percent chance of rain, mainly before 10am. Mostly sunny, with a high near 61. South southwest wind around 6 mph.
Friday Night
Partly cloudy, with a low around 48. Light and variable wind.
Saturday
A 20 percent chance of rain after 10am. Mostly cloudy, with a high near 61. Light and variable wind becoming northwest 5 to 7 mph in the morning. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
A 50 percent chance of rain. Cloudy, with a low around 51. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Rain likely, mainly after 10am. Cloudy, with a high near 60. Chance of precipitation is 70%.
Sunday Night
Rain likely. Cloudy, with a low around 49.
Monday
A chance of rain, mainly before 4pm. Partly sunny, with a high near 57.
Monday Night
A slight chance of rain before 10pm. Mostly cloudy, with a low around 46.
Tuesday
Mostly sunny, with a high near 58.
Tuesday Night
Partly cloudy, with a low around 45.
Wednesday
A slight chance of rain. Mostly sunny, with a high near 58.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 47.
Thursday
A chance of rain. Mostly cloudy, with a high near 57.
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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:
2:48 pm PST Nov 13, 2025
Forecast Valid:
3pm PST Nov 13, 2025-6pm PST Nov 20, 2025
 
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