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

Lake Effect Snow through Saturday: A Series of Storms Impact the West

Lake effect snow showers will continue through Saturday downwind of Lakes Erie, Ontario and the eastern portion of Lake Superior. A series of storm systems will continue to impact California and the Pacific Northwest through the weekend and into next week, bringing widespread rainfall, mountain snowfall, and gusty winds. Coastal flooding is expected in northern California. Read More >

Hazardous Weather Conditions

Current conditions at

Half Moon Bay Airport (KHAF)

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

Mist

57°F

14°C

Humidity 100%
Wind Speed S 14 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 57°F (14°C)
Visibility 1.50 mi
Last update 01 Jan 06:35 PM PST
Extended Forecast for

Half Moon Bay CA

Coastal Flood Advisory January 1, 06:59pm until January 4, 02:00pm
Wind Advisory January 2, 01:00pm until January 3, 01:00pm
Click here for hazard details and duration
Coastal Flood Advisory
Wind Advisory
  •  
    Coastal Flood Advisory January 1, 06:59pm until January 4, 02:00pm

    NOW until 2:00pm Sun

    Coastal Flood Advisory

  • Tonight

    Low: 50 °F

    Rain Likely
    then Chance
    Rain

  • Friday

    Friday: A slight chance of rain before 3pm, then rain after 4pm. High near 61. South southeast wind 15 to 21 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 61 °F

    Slight Chance
    Rain then
    Rain

  • Friday Night

    Friday Night: Rain before 10pm, then showers and possibly a thunderstorm between 10pm and 1am, then rain after 1am. Steady temperature around 56. Breezy, with a south southeast wind 25 to 28 mph, with gusts as high as 49 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 56 °F

    Showers and
    Breezy

  • Saturday

    Saturday: Rain before 4pm, then showers and possibly a thunderstorm after 4pm. High near 61. Breezy, with a south wind 23 to 28 mph, with gusts as high as 39 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 61 °F

    Showers and
    Breezy

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 7pm, then rain between 7pm and 1am, then showers and possibly a thunderstorm after 1am. Low around 52. South wind 16 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 52 °F

    Showers

  • Sunday

    Sunday: Rain. High near 58. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 58 °F

    Rain

  • Sunday Night

    Sunday Night: Rain. Low around 48. Chance of precipitation is 80%.

    Low: 48 °F

    Rain

  • Monday

    Monday: Rain. Mostly cloudy, with a high near 57.

    High: 57 °F

    Rain

Detailed Forecast

Tonight
Rain likely, mainly before 11pm. Mostly cloudy, with a low around 50. South wind 11 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A slight chance of rain before 3pm, then rain after 4pm. High near 61. South southeast wind 15 to 21 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Rain before 10pm, then showers and possibly a thunderstorm between 10pm and 1am, then rain after 1am. Steady temperature around 56. Breezy, with a south southeast wind 25 to 28 mph, with gusts as high as 49 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
Rain before 4pm, then showers and possibly a thunderstorm after 4pm. High near 61. Breezy, with a south wind 23 to 28 mph, with gusts as high as 39 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and possibly a thunderstorm before 7pm, then rain between 7pm and 1am, then showers and possibly a thunderstorm after 1am. Low around 52. South wind 16 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
Rain. High near 58. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Sunday Night
Rain. Low around 48. Chance of precipitation is 80%.
Monday
Rain. Mostly cloudy, with a high near 57.
Monday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 44.
Tuesday
A chance of rain, mainly before 10am. Partly sunny, with a high near 57.
Tuesday Night
A slight chance of rain. Mostly cloudy, with a low around 45.
Wednesday
A chance of rain. Partly sunny, with a high near 57.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 44.
Thursday
A chance of rain. Partly sunny, with a high near 56.
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ABOUT THIS FORECAST

 
Point Forecast:
Half Moon Bay CA
 37.48°N 122.42°W (Elev. 397 ft)
Last Update:
12:32 pm PST Jan 1, 2026
Forecast Valid:
6pm PST Jan 1, 2026-6pm PST Jan 8, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation