National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

Half Moon Bay Airport (KHAF)

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

Mostly Cloudy

63°F

17°C

Humidity 88%
Wind Speed NNW 12 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 59°F (15°C)
Visibility 7.00 mi
Last update 18 Sep 04:35 PM PDT
Extended Forecast for

2 Miles SSW Half Moon Bay CA

  • Tonight

    Tonight: Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 55. Northwest wind 5 to 8 mph becoming calm after midnight.

    Low: 55 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 67. Calm wind becoming west northwest 5 to 8 mph in the afternoon.

    High: 67 °F

    Patchy Fog
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Cloudy, with a low around 55. West northwest wind 3 to 7 mph.

    Low: 55 °F

    Cloudy

  • Sunday

    Sunday: Cloudy, with a high near 64. West northwest wind 5 to 7 mph.

    High: 64 °F

    Cloudy

  • Sunday Night

    Sunday Night: Cloudy, with a low around 55. West northwest wind 5 to 7 mph becoming calm after midnight.

    Low: 55 °F

    Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 65.

    High: 65 °F

    Mostly Cloudy

  • Monday Night

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

    Low: 55 °F

    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 66.

    High: 66 °F

    Patchy Fog
    then Partly
    Sunny

  • Tuesday Night

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

    Low: 55 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 55. Northwest wind 5 to 8 mph becoming calm after midnight.
Saturday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 67. Calm wind becoming west northwest 5 to 8 mph in the afternoon.
Saturday Night
Cloudy, with a low around 55. West northwest wind 3 to 7 mph.
Sunday
Cloudy, with a high near 64. West northwest wind 5 to 7 mph.
Sunday Night
Cloudy, with a low around 55. West northwest wind 5 to 7 mph becoming calm after midnight.
Monday
Mostly cloudy, with a high near 65.
Monday Night
Patchy fog after 8pm. Otherwise, mostly cloudy, with a low around 55.
Tuesday
Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 66.
Tuesday Night
Mostly cloudy, with a low around 55.
Wednesday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 72.
Wednesday Night
Mostly cloudy, with a low around 57.
Thursday
Mostly sunny, with a high near 73.
Thursday Night
Mostly cloudy, with a low around 58.
Friday
Partly sunny, with a high near 69.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSW Half Moon Bay CA
 37.43°N 122.44°W (Elev. 0 ft)
Last Update:
1:26 pm PDT Sep 18, 2026
Forecast Valid:
5pm PDT Sep 18, 2026-6pm PDT Sep 25, 2026
 
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Additional Resources

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