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.

Mist

57°F

14°C

Humidity 100%
Wind Speed NW 4 MPH
Barometer 30.05 in (1017.61 mb)
Dewpoint 57°F (14°C)
Visibility 5.00 mi
Last update 19 Sep 03:35 AM PDT
Extended Forecast for

3 Miles NW Half Moon Bay CA

  • Today

    Today: Partly sunny, with a high near 64. Light west northwest wind increasing to 5 to 9 mph in the morning.

    High: 64 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 56. West northwest wind 6 to 8 mph.

    Low: 56 °F

    Mostly Cloudy

  • Sunday

    Sunday: Cloudy, with a steady temperature around 59. West northwest wind around 8 mph.

    High: 59 °F

    Cloudy

  • Sunday Night

    Sunday Night: Cloudy, with a low around 56. West northwest wind 5 to 8 mph.

    Low: 56 °F

    Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 63. West northwest wind 3 to 6 mph.

    High: 63 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 56.

    Low: 56 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 64.

    High: 64 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 56.

    Low: 56 °F

    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 10am. Otherwise, partly sunny, with a high near 69.

    High: 69 °F

    Patchy Fog
    then Mostly
    Sunny

Detailed Forecast

Today
Partly sunny, with a high near 64. Light west northwest wind increasing to 5 to 9 mph in the morning.
Tonight
Mostly cloudy, with a low around 56. West northwest wind 6 to 8 mph.
Sunday
Cloudy, with a steady temperature around 59. West northwest wind around 8 mph.
Sunday Night
Cloudy, with a low around 56. West northwest wind 5 to 8 mph.
Monday
Mostly cloudy, with a high near 63. West northwest wind 3 to 6 mph.
Monday Night
Mostly cloudy, with a low around 56.
Tuesday
Mostly cloudy, with a high near 64.
Tuesday Night
Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 56.
Wednesday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 69.
Wednesday Night
Mostly cloudy, with a low around 58.
Thursday
Mostly sunny, with a high near 70.
Thursday Night
Mostly cloudy, with a low around 58.
Friday
Partly sunny, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NW Half Moon Bay CA
 37.49°N 122.48°W (Elev. 0 ft)
Last Update:
1:26 am PDT Sep 19, 2026
Forecast Valid:
4am PDT Sep 19, 2026-6pm PDT Sep 25, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation