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      Elev 90 ft, 37.460 °N 122.427 °W

      Half Moon Bay, CA

      Near Downtown Half Moon Bay Station60°
      Updated: 5:34 AM PDT on September 17, 2026 (GMT -7)
      5 minutes ago
      66°
      57°
      60
      Feels Like 60
      Fog
      N
      3
      Higher temperature is expected today
      50
      50
      575
      90
      50
      7
      0 mph
      50
      50
      50
      50
      50
      50
      Radar · Now
        Hyper-local data from Weather Underground's network of
        400,000+ personal weather stations worldwide
        Today
        Fri 09/18
        High 66°f
         11% Precip. / 0 in
        Cloudy skies early, then partly cloudy this afternoon. High 66F. Winds SSW at 5 to 10 mph.
        Tonight
        Fri 09/18
        Low 57°f
         23% Precip. / 0 in
        Cloudy. Low 57F. Winds light and variable.
        Tomorrow
        Sat 09/19
        High 67°f56°f
         20% Precip. / 0 in
        Cloudy early with partial sunshine expected late. High 67F. Winds NNW at 5 to 10 mph.
        Hourly Forecast
        Now
        60°
        6AM
        60°
        6:53AM
        Sunrise
        7AM
        60°
        8AM
        60°
        9AM
        62°
        10AM
        63°
        11AM
        64°
        12PM
        66°
        1PM
        65°
        2PM
        66°
        3PM
        66°
        4PM
        66°
        5PM
        65°
        6PM
        65°
        7PM
        63°
        7:13PM
        Sunset
        8PM
        61°
        9PM
        61°
        10PM
        60°
        11PM
        59°
        12AM
        58°
        1AM
        58°
        2AM
        58°
        3AM
        58°
        4AM
        58°
        5AM
        58°
        Precipitation
        23%
        Pollen
        Ragweed Pollen
        Low
        Air Quality
        44
        Good
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 30.04 in
        2. Visibility 1.5 miles
        3. Clouds Cloudy
        4. Dew Point58°F
        5. Humidity 93%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KHAF Station History
        Almanac for September 17, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 66°F 66°F 82°F 1988
        4. Low 57°F 51°F 39°F 2006
        5. Rain/Snow Depth
        6. Precipitation 0 in 3.2 in -
        7. Snow 0 in 0 in -
        Almanac for September 18, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 67°F 67°F 89°F
        4. Low 57°F 51°F 39°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:53 AM 7:14 PM
        3. Civil Twilight 6:27 AM 7:40 PM
        4. Nautical Twilight 5:56 AM 8:10PM
        5. Astronomical Twilight 5:25 AM 8:42 PM
        1. Length of Visible Light 13h 12m
        2. Length of Day 12h 20m
        3. Tomorrow will be 2 minutes 23 seconds shorter
        1. Moon 1:45 PM 10:53 PM
        2. Waxing Crescent40% of the Moon is Illuminated
        Sep 18
        Waxing Half First Qtr
        Sep 26
        Full Moon
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Precipitation
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