Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Current conditions at

Half Moon Bay Airport (KHAF)

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

Mist

59°F

15°C

Humidity 100%
Wind Speed NW 8 MPH
Barometer 30.04 in (1017.27 mb)
Dewpoint 59°F (15°C)
Visibility 0.75 mi
Last update 17 Aug 04:35 AM PDT
Extended Forecast for

3 Miles NW Half Moon Bay CA

  • Overnight

    Overnight: Patchy drizzle.  Cloudy, with a low around 56. West southwest wind around 6 mph.

    Low: 56 °F

    Patchy
    Drizzle

  • Sunday

    Sunday: Patchy drizzle before 11am.  Mostly cloudy, with a high near 62. West wind 7 to 10 mph.

    High: 62 °F

    Patchy
    Drizzle then
    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 55. West northwest wind 7 to 9 mph.

    Low: 55 °F

    Mostly Cloudy

  • Monday

    Monday: Cloudy, then gradually becoming mostly sunny, with a high near 64. West northwest wind 3 to 7 mph.

    High: 64 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: A slight chance of drizzle between 11pm and 2am.  Patchy fog after 9pm.  Otherwise, mostly cloudy, with a low around 55. West northwest wind 3 to 7 mph.

    Low: 55 °F

    Slight Chance
    Drizzle and
    Patchy Fog

  • Tuesday

    Tuesday: A slight chance of drizzle before 11am.  Patchy fog before 11am.  Otherwise, partly sunny, with a high near 63.

    High: 63 °F

    Slight Chance
    Drizzle and
    Patchy Fog
    then Partly
    Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 9pm.  Otherwise, mostly cloudy, with a low around 55.

    Low: 55 °F

    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before noon.  Otherwise, partly sunny, with a high near 66.

    High: 66 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 8pm.  Otherwise, mostly cloudy, with a low around 55.

    Low: 55 °F

    Patchy Fog

Detailed Forecast

Overnight
Patchy drizzle. Cloudy, with a low around 56. West southwest wind around 6 mph.
Sunday
Patchy drizzle before 11am. Mostly cloudy, with a high near 62. West wind 7 to 10 mph.
Sunday Night
Mostly cloudy, with a low around 55. West northwest wind 7 to 9 mph.
Monday
Cloudy, then gradually becoming mostly sunny, with a high near 64. West northwest wind 3 to 7 mph.
Monday Night
A slight chance of drizzle between 11pm and 2am. Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 55. West northwest wind 3 to 7 mph.
Tuesday
A slight chance of drizzle before 11am. Patchy fog before 11am. Otherwise, partly sunny, with a high near 63.
Tuesday Night
Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 55.
Wednesday
Patchy fog before noon. Otherwise, partly sunny, with a high near 66.
Wednesday Night
Patchy fog after 8pm. Otherwise, mostly cloudy, with a low around 55.
Thursday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 66.
Thursday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 55.
Friday
Patchy fog. Otherwise, partly sunny, with a high near 64.
Friday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 55.
Saturday
Patchy fog. Otherwise, partly sunny, with a high near 63.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NW Half Moon Bay CA
 37.49°N 122.45°W (Elev. 151 ft)
2:33 am PDT Aug 17, 2025
4am PDT Aug 17, 2025-6pm PDT Aug 23, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database