Significant and Catastrophic Flooding in the Pacific Northwest; Very Cold Temperatures in the Northern Plains

The atmospheric river over the Pacific Northwest will begin to subside today, but lingering rainfall will exacerbate ongoing catastrophic major river flooding, and landslides will continue across portions of western Washington and northwest Oregon for several days. Arctic air will plummet southward into the Northern Plains today, bringing cold air in the single digits to the region by Friday. Read More >

Current conditions at

Half Moon Bay Airport (KHAF)

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

Clear

66°F

19°C

Humidity 39%
Wind Speed NNE 12 MPH
Barometer 30.11 in (1019.64 mb)
Dewpoint 41°F (5°C)
Visibility 9.00 mi
Last update 11 Dec 09:55 AM PST
Extended Forecast for

4 Miles E Half Moon Bay CA

  • Today

    Today: Sunny, with a high near 61. East northeast wind around 11 mph, with gusts as high as 21 mph.

    High: 61 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 50. East wind around 11 mph, with gusts as high as 20 mph.

    Low: 50 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 61. East northeast wind 7 to 9 mph.

    High: 61 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 46. South southeast wind around 6 mph.

    Low: 46 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 61. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 61 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny

  • Sunday Night

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

    Low: 46 °F

    Partly Cloudy

  • Monday

    Monday: A slight chance of rain after 4pm.  Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny
    then Slight
    Chance Rain

Detailed Forecast

Today
Sunny, with a high near 61. East northeast wind around 11 mph, with gusts as high as 21 mph.
Tonight
Clear, with a low around 50. East wind around 11 mph, with gusts as high as 20 mph.
Friday
Sunny, with a high near 61. East northeast wind 7 to 9 mph.
Friday Night
Mostly clear, with a low around 46. South southeast wind around 6 mph.
Saturday
Sunny, with a high near 61. Calm wind becoming southwest around 6 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 46.
Sunday
Mostly sunny, with a high near 59.
Sunday Night
Partly cloudy, with a low around 46.
Monday
A slight chance of rain after 4pm. Mostly sunny, with a high near 59.
Monday Night
A chance of rain, mainly after 10pm. Mostly cloudy, with a low around 50.
Tuesday
A chance of rain. Partly sunny, with a high near 60.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 52.
Wednesday
A chance of rain. Partly sunny, with a high near 58.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Half Moon Bay CA
 37.46°N 122.36°W (Elev. 1145 ft)
2:25 am PST Dec 11, 2025
10am PST Dec 11, 2025-6pm PST Dec 17, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database