Areas of Excessive Rainfall and Severe Thunderstorms; Fire Weather Concerns in the Northern Plains and Four Corners Region

Widespread showers and thunderstorms may bring areas of flash flooding across much of the Southern Plains into the Gulf Coast region and the upper Ohio River Valley into the Mid-Atlantic. A large Pacific storm will bring widespread rain, gusty winds, and mountain snow to California and the Great Basin. Fire weather concerns expected in the Northern Plains and the Four Corners region. Read More >

Current conditions at

Half Moon Bay Airport (KHAF)

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

Mist

57°F

14°C

Humidity 87%
Wind Speed NNW 18 MPH
Barometer 29.85 in (1010.84 mb)
Dewpoint 54°F (12°C)
Visibility 4.00 mi
Last update 26 May 06:35 PM PDT
Extended Forecast for

Half Moon Bay CA

  • Tonight

    Tonight: Increasing clouds, with a low around 47. Northwest wind 11 to 16 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 30 mph.

    Low: 47 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Patchy fog before 9am.  Otherwise, partly sunny, with a high near 60. Calm wind becoming west 5 to 8 mph in the afternoon.

    High: 60 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain after 4am.  Mostly cloudy, with a low around 48. West wind around 5 mph becoming calm  in the evening.

    Low: 48 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Thursday

    Thursday: A 30 percent chance of rain before 11am.  Partly sunny, with a high near 62. Light and variable wind becoming southwest 5 to 9 mph in the afternoon.  New precipitation amounts of less than a tenth of an inch possible.

    High: 62 °F

    Chance Rain
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 11pm.  Otherwise, mostly cloudy, with a low around 49. West southwest wind 5 to 8 mph becoming calm  in the evening.

    Low: 49 °F

    Patchy Fog

  • Friday

    Friday: Patchy fog before 8am.  Otherwise, partly sunny, with a high near 60.

    High: 60 °F

    Patchy Fog
    then Partly
    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 49.

    Low: 49 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 58.

    High: 58 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 47. Northwest wind 11 to 16 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 30 mph.
Wednesday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 60. Calm wind becoming west 5 to 8 mph in the afternoon.
Wednesday Night
A 20 percent chance of rain after 4am. Mostly cloudy, with a low around 48. West wind around 5 mph becoming calm in the evening.
Thursday
A 30 percent chance of rain before 11am. Partly sunny, with a high near 62. Light and variable wind becoming southwest 5 to 9 mph in the afternoon. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 49. West southwest wind 5 to 8 mph becoming calm in the evening.
Friday
Patchy fog before 8am. Otherwise, partly sunny, with a high near 60.
Friday Night
Mostly cloudy, with a low around 49.
Saturday
Partly sunny, with a high near 58.
Saturday Night
Mostly clear, with a low around 47.
Sunday
Mostly sunny, with a high near 63.
Sunday Night
Patchy fog. Otherwise, mostly clear, with a low around 47.
Monday
Patchy fog. Otherwise, mostly sunny, with a high near 64.
Monday Night
Partly cloudy, with a low around 49.
Tuesday
Mostly sunny, with a high near 64.
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ABOUT THIS FORECAST

 
Point Forecast:
Half Moon Bay CA
 37.47°N 122.45°W (Elev. 7 ft)
1:26 pm PDT May 26, 2026
6pm PDT May 26, 2026-6pm PDT Jun 2, 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