Heavy Rainfall and Flooding Threats in the Midwest and Ohio Valley; Heat Continues in the Plains and Southeast

An active pattern will continue to bring heavy to excessive rainfall and flash flooding threats to the Midwest and Ohio Valley over the next couple of days. Dangerous heat continues across the central/southern Plains and Southeast U.S. into next week. There is potential for record-tying/breaking temperatures with many areas forecast to see their hottest temperatures so far this year. 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 SSW 4 MPH
Barometer 29.85 in (1010.84 mb)
Dewpoint 59°F (15°C)
Visibility 6.00 mi
Last update 12 Aug 08:15 PM PDT
Extended Forecast for

Half Moon Bay CA

  • Tonight

    Tonight: Cloudy, with a low around 56. South southwest wind around 7 mph.

    Low: 56 °F

    Cloudy

  • Thursday

    Thursday: Cloudy, with a high near 61. South southwest wind 7 to 11 mph, with gusts as high as 18 mph.

    High: 61 °F

    Cloudy

  • Thursday Night

    Thursday Night: Cloudy, with a low around 56. Southwest wind 3 to 8 mph.

    Low: 56 °F

    Cloudy

  • Friday

    Friday: Cloudy, with a high near 62. Light southwest wind increasing to 5 to 9 mph in the morning.

    High: 62 °F

    Cloudy

  • Friday Night

    Friday Night: Patchy fog after 5am.  Otherwise, cloudy, with a low around 56. West southwest wind 5 to 8 mph becoming calm  in the evening.

    Low: 56 °F

    Cloudy then
    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 8am.  Otherwise, mostly cloudy, with a high near 63.

    High: 63 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Cloudy

  • Sunday

    Sunday: Cloudy, with a high near 62.

    High: 62 °F

    Cloudy

  • Sunday Night

    Sunday Night: Cloudy, with a low around 55.

    Low: 55 °F

    Cloudy

Detailed Forecast

Tonight
Cloudy, with a low around 56. South southwest wind around 7 mph.
Thursday
Cloudy, with a high near 61. South southwest wind 7 to 11 mph, with gusts as high as 18 mph.
Thursday Night
Cloudy, with a low around 56. Southwest wind 3 to 8 mph.
Friday
Cloudy, with a high near 62. Light southwest wind increasing to 5 to 9 mph in the morning.
Friday Night
Patchy fog after 5am. Otherwise, cloudy, with a low around 56. West southwest wind 5 to 8 mph becoming calm in the evening.
Saturday
Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 63.
Saturday Night
Mostly cloudy, with a low around 55.
Sunday
Cloudy, with a high near 62.
Sunday Night
Cloudy, with a low around 55.
Monday
Cloudy, with a high near 62.
Monday Night
Cloudy, with a low around 56.
Tuesday
Mostly cloudy, with a high near 64.
Tuesday Night
Cloudy, with a low around 57.
Wednesday
Mostly cloudy, with a high near 65.
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ABOUT THIS FORECAST

 
Point Forecast:
Half Moon Bay CA
 37.48°N 122.42°W (Elev. 397 ft)
1:27 pm PDT Aug 12, 2026
8pm PDT Aug 12, 2026-6pm PDT Aug 19, 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