Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Current conditions at

Half Moon Bay Airport (KHAF)

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

Clear

50°F

10°C

Humidity 81%
Wind Speed N 0 MPH
Barometer 30.05 in (1017.61 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 20 Jan 10:35 PM PST
Extended Forecast for

Half Moon Bay CA

  • Tonight

    Tonight: Cloudy, with a low around 49. Calm wind.

    Low: 49 °F

    Cloudy

  • Wednesday

    Wednesday: Cloudy, with a high near 63. Calm wind becoming southwest around 5 mph.

    High: 63 °F

    Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 48. Calm wind.

    Low: 48 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 61. Calm wind becoming west northwest around 6 mph in the afternoon.

    High: 61 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 48. Light west wind.

    Low: 48 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 61.

    High: 61 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

Detailed Forecast

Tonight
Cloudy, with a low around 49. Calm wind.
Wednesday
Cloudy, with a high near 63. Calm wind becoming southwest around 5 mph.
Wednesday Night
Mostly cloudy, with a low around 48. Calm wind.
Thursday
Mostly cloudy, with a high near 61. Calm wind becoming west northwest around 6 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 48. Light west wind.
Friday
Mostly sunny, with a high near 61.
Friday Night
Partly cloudy, with a low around 46.
Saturday
Sunny, with a high near 62.
Saturday Night
Partly cloudy, with a low around 44.
Sunday
Partly sunny, with a high near 62.
Sunday Night
Mostly cloudy, with a low around 45.
Monday
Partly sunny, with a high near 63.
Monday Night
Partly cloudy, with a low around 45.
Tuesday
Partly sunny, with a high near 63.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Half Moon Bay CA
 37.48°N 122.42°W (Elev. 397 ft)
7:24 pm PST Jan 20, 2026
10pm PST Jan 20, 2026-6pm PST Jan 27, 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