National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Weather observations for the past three days for
Half Moon Bay Airport
Metric (Imperial)
Date Time (pdt) Wind (kph) Vis. (km) Weather Sky Cond. Temperature (ºC) Relative Humidity Wind Chill (°C) Heat Index (°C) Pressure Precipitation (cm)
Air Dwpt 6 hour altimeter (cm) sea level (mb) 1 hr 3 hr 6 hr
Max. Min.
31 10:35 Calm 3.22 Fog/Mist BKN018 BKN022 15 15 100% 76.17 0.0
31 10:15 W 6 3.22 Fog/Mist BKN017 BKN021 15 15 100% 76.17 0.0
31 09:55 W 9 2.41 Fog/Mist FEW006 BKN016 15 15 100% 76.15 0.0
31 09:35 W 6 2.41 Fog/Mist FEW006 BKN016 15 15 100% 76.15 0.0
31 09:15 SW 6 2.82 Fog/Mist OVC016 15 15 100% 76.12 0.0
31 08:55 Calm 3.22 Fog/Mist BKN016 14 14 100% 76.12 0.0
31 08:35 W 7 2.82 Fog/Mist OVC016 14 14 100% 76.12 0.0
31 07:55 Calm 4.02 Fog/Mist OVC015 14 14 100% 76.1 0.0
31 07:35 Calm 4.83 Overcast OVC014 0 0 0% 76.1 0.0
31 07:15 NW 11 4.83 Fog/Mist OVC014 14 14 100% 76.07 0.0
31 06:55 NW 7 8.05 Fog/Mist OVC015 14 14 100% 76.05 0.0
31 06:35 NW 11 4.83 Fog/Mist OVC014 14 14 100% 76.05 0.0
31 06:15 NW 13 8.05 Fog/Mist OVC014 14 14 100% 76.05 0.0
31 05:55 NW 9 9.66 Fog/Mist OVC014 15 14 94% 76.05 0.0
31 05:35 NW 13 8.05 Fog/Mist OVC014 15 14 94% 76.05 0.0
31 05:15 NW 7 8.05 Fog/Mist OVC014 15 14 94% 76.05 0.0
31 04:55 W 9 9.66 Fog/Mist OVC014 15 14 94% 76.02 0.0
31 04:35 W 9 8.05 Fog/Mist OVC014 15 14 94% 76.02 0.0
31 04:15 Calm 8.05 Fog/Mist OVC014 15 14 94% 76.02 0.0
31 03:55 W 9 8.05 Overcast OVC014 0 0 0% 76.05 0.0
31 03:35 SW 6 9.66 Fog/Mist OVC014 15 13 88% 76.02 0.0
31 03:15 SW 6 9.66 Fog/Mist OVC014 15 13 88% 76.02 0.0
31 02:55 Calm 8.05 Fog/Mist OVC014 15 13 88% 76 0.0
31 02:35 SW 7 9.66 Overcast OVC014 0 0 0% 76 0.0
31 02:15 Calm 8.05 Fog/Mist OVC014 15 13 88% 76 0.0
31 01:55 Calm 8.05 Overcast OVC014 0 0 0% 76.02 0.0
31 01:35 Calm 8.05 Fog/Mist OVC013 14 14 100% 76.02 0.0
31 01:15 Calm 8.05 Fog/Mist OVC013 15 14 94% 76.05 0.0
31 00:55 S 6 8.05 Fog/Mist OVC013 14 14 100% 76.05 0.0
31 00:35 S 6 8.05 Fog/Mist OVC013 14 14 100% 76.02 0.0
31 00:15 S 6 9.66 Fog/Mist OVC013 14 14 100% 76.02 0.0
30 23:55 S 7 9.66 Fog/Mist OVC013 14 14 100% 76.02 0.0
30 23:35 S 6 9.66 Fog/Mist OVC013 14 14 100% 76.05 0.0
30 23:15 S 6 9.66 Fog/Mist OVC012 15 14 94% 76.05 0.0
30 22:55 SE 7 8.05 Fog/Mist OVC012 14 14 100% 76.05 0.0
30 22:35 S 6 8.05 Fog/Mist OVC011 14 14 100% 76.05 0.0
30 22:15 S 6 8.05 Fog/Mist OVC011 14 14 100% 76.05 0.0
30 21:55 Calm 8.05 Fog/Mist OVC012 14 14 100% 76.05 0.0
30 21:35 Calm 8.05 Fog/Mist OVC011 14 14 100% 76.05 0.0
30 21:15 Calm 8.05 Fog/Mist OVC011 14 14 100% 76.05 0.0
30 20:55 Vrbl 6 6.44 Fog/Mist OVC011 14 14 100% 76.02 0.0
30 20:35 Calm 6.44 Fog/Mist OVC011 14 14 100% 76.02 0.0
30 20:15 Calm 6.44 Fog/Mist OVC010 14 14 100% 76.02 0.0
30 19:55 Calm 8.05 Fog/Mist OVC010 14 14 100% 76.02 0.0
30 19:35 Calm 6.44 Fog/Mist OVC010 14 14 100% 76.02 0.0
30 19:15 Calm 6.44 Fog/Mist OVC010 14 14 100% 76.02 0.0
30 18:55 Calm 6.44 Fog/Mist OVC008 14 14 100% 76.02 0.0
30 18:35 NW 9 4.83 Fog/Mist OVC008 14 14 100% 76.02 0.0
30 18:15 W 6 4.83 Mostly Cloudy BKN008 BKN013 0 0 0% 76.05 0.0
30 17:55 SW 7 6.44 Fog/Mist BKN013 15 14 94% 76.05 0.0
30 17:35 W 9 8.05 Fog/Mist OVC013 15 14 94% 76.05 0.0
30 17:15 Vrbl 7 6.44 Fog/Mist OVC013 15 14 94% 76.05 0.0
30 16:55 Vrbl 9 6.44 Fog/Mist OVC013 16 14 88% 76.05 0.0
30 16:35 SW 9 8.05 Fog/Mist OVC013 16 14 88% 76.05 0.0
30 16:15 SW 11 8.05 Fog/Mist OVC013 16 14 88% 76.05 0.0
30 15:55 SW 13 8.05 Overcast with Haze OVC013 16 14 88% 76.07 0.0
30 15:35 SW 9 8.05 Mostly Cloudy with Haze BKN013 16 14 88% 76.07 0.0
30 15:15 Vrbl 9 6.44 Mostly Cloudy BKN013 0 0 0% 76.07 0.0
30 14:55 W 7 6.44 Overcast with Haze OVC013 16 14 88% 76.1 0.0
30 14:35 Calm 8.05 Fog/Mist OVC013 16 14 88% 76.12 0.0
30 14:15 S 11 6.44 Fog/Mist OVC013 16 14 88% 76.15 0.0
30 13:55 Calm 8.05 Fog/Mist OVC013 16 14 88% 76.15 0.0
30 13:35 Vrbl 7 8.05 Fog/Mist OVC013 16 14 88% 76.17 0.0
30 13:15 Calm 6.44 Fog/Mist OVC013 15 14 94% 76.17 0.0
30 12:55 S 9 6.44 Fog/Mist OVC013 16 14 88% 76.17 0.0
30 12:35 S 9 6.44 Fog/Mist OVC013 16 14 88% 76.17 0.0
30 12:15 Vrbl 7 6.44 Fog/Mist OVC013 15 14 94% 76.17 0.0
30 11:55 S 9 6.44 Fog/Mist OVC013 16 14 88% 76.17 0.0
30 11:35 Vrbl 7 4.83 Fog/Mist BKN013 15 14 94% 76.2 0.0
30 11:15 Calm 4.02 Fog/Mist BKN013 15 14 94% 76.2 0.0
30 10:55 W 7 4.83 Fog/Mist BKN013 15 14 94% 76.2 0.0
30 10:35 Calm 4.83 Fog/Mist BKN013 15 14 94% 76.2 0.0
30 10:15 Calm 4.83 Fog/Mist BKN013 14 14 100% 76.2 0.0
30 09:55 W 11 4.83 Fog/Mist OVC013 15 14 94% 76.17 0.0
30 09:35 Calm 4.83 Mostly Cloudy BKN012 0 0 0% 76.17 0.0
30 09:15 W 7 4.83 Fog/Mist OVC012 14 14 100% 76.17 0.0
30 08:55 W 7 4.83 Fog/Mist OVC012 14 14 100% 76.17 0.0
30 08:35 W 9 4.83 Fog/Mist OVC012 14 14 100% 76.17 0.0
30 08:15 W 7 4.83 Fog/Mist BKN012 14 14 100% 76.17 0.0
30 07:55 W 6 4.83 Fog/Mist BKN012 14 14 100% 76.17 0.0
30 07:35 W 6 4.83 Fog/Mist BKN013 14 14 100% 76.15 0.0
30 07:15 W 9 4.83 Fog/Mist OVC014 14 14 100% 76.15 0.0
30 06:55 W 9 4.83 Fog/Mist OVC015 14 14 100% 76.12 0.0
30 06:35 W 6 6.44 Fog/Mist OVC014 14 14 100% 76.1 0.0
30 06:15 Vrbl 9 6.44 Fog/Mist OVC013 14 14 100% 76.1 0.0
30 05:55 NW 7 6.44 Fog/Mist OVC012 14 14 100% 76.1 0.0
30 05:35 Calm 6.44 Fog/Mist OVC013 14 14 100% 76.1 0.0
30 05:15 NW 9 6.44 Fog/Mist OVC013 14 14 100% 76.07 0.0
30 04:55 NW 7 6.44 Fog/Mist OVC012 14 14 100% 76.1 0.0
30 04:35 NW 9 6.44 Fog/Mist OVC012 14 14 100% 76.1 0.0
30 04:15 NW 13 6.44 Fog/Mist OVC011 14 14 100% 76.1 0.0
30 03:55 NW 11 6.44 Fog/Mist OVC012 14 14 100% 76.1 0.0
30 03:35 NW 13 6.44 Fog/Mist OVC012 14 14 100% 76.1 0.0
30 03:15 NW 7 6.44 Fog/Mist OVC012 14 14 100% 76.1 0.0
30 02:55 NW 13 6.44 Fog/Mist OVC011 15 14 94% 76.1 0.0
30 02:35 NW 9 G 19 6.44 Fog/Mist OVC011 15 14 94% 76.1 0.0
30 02:15 NW 11 6.44 Fog/Mist OVC012 15 14 94% 76.1 0.0
30 01:55 NW 13 6.44 Fog/Mist OVC012 15 14 94% 76.12 0.0
30 01:35 NW 17 8.05 Fog/Mist OVC013 15 14 94% 76.12 0.0
30 01:15 NW 13 G 24 8.05 Fog/Mist OVC014 15 14 94% 76.12 0.0
30 00:55 NW 13 6.44 Fog/Mist OVC016 14 13 94% 76.12 0.0
30 00:35 NW 9 8.05 Fog/Mist SCT016 13 13 100% 76.15 0.0
30 00:15 NW 7 8.05 Fog/Mist SCT018 13 13 100% 76.12 0.0
29 23:55 Calm 8.05 Mostly Cloudy BKN018 0 0 0% 76.15 0.0
29 23:35 Calm 8.05 Fog/Mist OVC019 13 13 100% 76.15 0.0
29 23:15 Calm 6.44 Fog/Mist BKN018 14 14 100% 76.15 0.0
29 22:55 Calm 6.44 Fog/Mist OVC018 14 14 100% 76.17 0.0
29 22:15 NW 9 8.05 Fog/Mist OVC016 15 14 94% 76.17 0.0
29 21:55 NW 13 8.05 Fog/Mist OVC015 15 15 100% 76.17 0.0
29 21:35 NW 9 8.05 Fog/Mist OVC014 15 15 100% 76.17 0.0
29 21:15 NW 11 9.66 Overcast OVC014 0 0 0% 76.17 0.0
29 20:55 NW 15 9.66 Fog/Mist BKN013 BKN018 15 14 94% 76.15 0.0
29 20:35 NW 13 9.66 Fog/Mist BKN017 BKN021 15 14 94% 76.15 0.0
29 20:15 NW 11 9.66 Fog/Mist SCT019 15 13 88% 76.12 0.0
29 19:55 NW 13 8.05 Fog/Mist CLR 15 13 88% 76.15 0.0
29 19:35 NW 9 6.44 Fog/Mist CLR 16 14 88% 76.15 0.0
29 19:15 NW 9 8.05 Fair with Haze CLR 16 14 88% 76.15 0.0
29 18:55 W 9 8.05 Fair with Haze CLR 17 14 83% 76.15 0.0
29 18:35 W 11 8.05 Fair with Haze CLR 17 14 83% 76.15 0.0
29 18:15 W 9 8.05 Fair with Haze CLR 17 14 83% 76.17 0.0
29 17:55 W 13 8.05 Fair with Haze CLR 17 14 83% 76.15 0.0
29 17:35 NW 13 8.05 Fair with Haze CLR 17 14 83% 76.15 0.0
29 17:15 NW 15 8.05 Fair with Haze CLR 17 15 88% 76.17 0.0
29 16:55 NW 13 8.05 A Few Clouds with Haze FEW015 18 15 83% 76.17 0.0
29 16:35 NW 13 8.05 A Few Clouds with Haze FEW014 18 15 83% 76.17 0.0
29 16:15 NW 15 8.05 Fair with Haze CLR 18 15 83% 76.2 0.0
29 15:55 NW 19 8.05 A Few Clouds with Haze FEW013 17 15 88% 76.17 0.0
29 15:35 NW 15 8.05 Partly Cloudy with Haze SCT013 18 15 83% 76.2 0.0
29 15:15 W 15 8.05 Partly Cloudy with Haze SCT013 18 15 83% 76.23 0.0
29 14:55 NW 17 8.05 Mostly Cloudy with Haze BKN013 18 15 83% 76.25 0.0
29 14:35 N 17 8.05 Mostly Cloudy with Haze BKN013 0 0 0% 76.25 0.0
29 14:15 NW 13 G 22 8.05 Partly Cloudy with Haze SCT013 18 15 83% 76.25 0.0
29 13:55 W 17 8.05 A Few Clouds with Haze FEW013 18 15 83% 76.25 0.0
29 13:35 NW 13 6.44 Partly Cloudy with Haze SCT013 18 15 83% 76.25 0.0
29 13:15 NW 15 8.05 A Few Clouds with Haze FEW013 18 15 83% 76.28 0.0
29 12:55 W 13 8.05 A Few Clouds with Haze FEW013 17 15 88% 76.28 0.0
29 12:35 NW 13 9.66 A Few Clouds with Haze FEW013 18 15 83% 76.28 0.0
29 12:15 NW 13 G 22 9.66 Fair with Haze CLR 17 14 83% 76.3 0.0
29 11:55 Vrbl 11 G 20 9.66 A Few Clouds with Haze FEW013 17 14 83% 76.3 0.0
29 11:35 NW 9 8.05 A Few Clouds with Haze FEW013 17 14 83% 76.33 0.0
29 11:15 NW 13 9.66 A Few Clouds with Haze FEW013 17 14 83% 76.33 0.0
29 10:55 W 13 8.05 Fog/Mist FEW013 17 15 88% 76.3 0.0
29 10:35 W 13 8.05 Fog/Mist CLR 16 15 94% 76.3 0.0
29 10:15 W 15 8.05 Fair with Haze CLR 17 14 83% 76.3 0.0
29 09:55 W 11 9.66 Partly Cloudy with Haze SCT013 17 14 83% 76.3 0.0
29 09:35 W 9 8.05 Fog/Mist BKN013 16 15 94% 76.28 0.0
29 09:15 W 6 6.44 Overcast OVC012 0 0 0% 76.28 0.0
29 08:55 Vrbl 7 6.44 Fog/Mist OVC013 15 15 100% 76.28 0.0
29 08:35 Calm 6.44 Fog/Mist OVC012 15 15 100% 76.25 0.0
29 08:15 Calm 6.44 Fog/Mist OVC011 15 15 100% 76.28 0.0
29 07:55 Calm 6.44 Fog/Mist OVC009 15 15 100% 76.25 0.0
29 07:35 Calm 6.44 Fog/Mist OVC009 15 15 100% 76.23 0.0
29 07:15 Calm 4.83 Fog/Mist OVC008 15 15 100% 76.23 0.0
29 06:55 Calm 4.83 Fog/Mist OVC007 15 15 100% 76.2 0.0
29 06:35 Calm 6.44 Fog/Mist OVC007 14 14 100% 76.2 0.0
29 06:15 Calm 8.05 Fog/Mist OVC007 14 14 100% 76.2 0.0
29 05:55 Calm 8.05 Fog/Mist OVC007 14 14 100% 76.17 0.0
29 05:35 Calm 8.05 Fog/Mist OVC007 14 14 100% 76.17 0.0
29 05:15 Calm 8.05 Fog/Mist OVC007 0 0 0% 76.17 0.0
29 04:55 NW 6 6.44 Fog/Mist OVC007 14 14 100% 76.17 0.0
29 04:35 Calm 8.05 Fog/Mist OVC007 14 14 100% 76.2 0.0
29 04:15 NW 7 8.05 Fog/Mist OVC007 14 14 100% 76.2 0.0
29 03:55 Calm 8.05 Fog/Mist OVC007 14 14 100% 76.2 0.0
29 03:35 NW 6 8.05 Fog/Mist OVC006 14 14 100% 76.2 0.0
29 03:15 NW 6 6.44 Fog/Mist OVC006 14 14 100% 76.2 0.0
29 02:55 NW 9 6.44 Overcast OVC005 0 0 0% 76.2 0.0
29 02:35 Calm 4.83 Fog/Mist OVC004 14 14 100% 76.2 0.0
29 02:15 N 7 4.83 Fog/Mist OVC004 14 14 100% 76.2 0.0
29 01:55 N 7 4.83 Fog/Mist OVC004 14 14 100% 76.2 0.0
29 01:35 Calm 4.83 Fog/Mist OVC004 14 14 100% 76.2 0.0
29 01:15 NW 9 6.44 Fog/Mist OVC004 14 14 100% 76.23 0.0
29 00:55 N 11 6.44 Fog/Mist OVC004 14 14 100% 76.23 0.0
29 00:35 N 15 6.44 Fog/Mist OVC005 14 14 100% 76.2 0.0
29 00:15 N 7 8.05 Fog/Mist OVC004 14 14 100% 76.2 0.0
28 23:55 N 11 8.05 Fog/Mist OVC004 14 14 100% 76.2 0.0
28 23:35 N 13 8.05 Fog/Mist OVC005 14 14 100% 76.2 0.0
28 23:15 N 11 8.05 Fog/Mist OVC005 14 14 100% 76.17 0.0
28 22:55 N 11 8.05 Fog/Mist OVC005 14 14 100% 76.17 0.0
28 22:35 N 13 9.66 Fog/Mist OVC005 14 14 100% 76.17 0.0
28 22:15 N 9 8.05 Fog/Mist OVC005 14 14 100% 76.2 0.0
28 21:35 Vrbl 9 9.66 Fog/Mist OVC005 14 14 100% 76.2 0.0
28 21:15 N 11 9.66 Fog/Mist OVC005 14 14 100% 76.2 0.0
28 20:15 N 13 9.66 Fog/Mist BKN008 15 15 100% 76.17 0.0
28 19:55 NW 15 8.05 Fog/Mist BKN008 15 15 100% 76.2 0.0
28 19:35 N 17 8.05 Overcast OVC008 0 0 0% 76.2 0.0
28 19:15 N 13 8.05 Fog/Mist OVC008 15 15 100% 76.2 0.0
28 18:55 N 13 G 24 8.05 Fog/Mist OVC008 15 15 100% 76.2 0.0
28 18:35 N 13 G 28 8.05 Overcast OVC008 0 0 0% 76.23 0.0
28 18:15 NW 15 G 26 8.05 Fog/Mist BKN009 BKN013 16 15 94% 76.2 0.0
28 17:55 N 19 9.66 Fog/Mist FEW009 FEW013 16 15 94% 76.2 0.0
28 17:35 NW 20 G 30 9.66 Fog/Mist CLR 16 15 94% 76.23 0.0
28 17:15 N 15 9.66 Fog/Mist FEW009 17 15 88% 76.2 0.0
28 16:55 N 17 G 30 9.66 Fog/Mist BKN009 16 15 94% 76.2 0.0
28 16:35 N 22 9.66 Fog/Mist FEW009 16 15 94% 76.23 0.0
28 16:15 N 17 G 30 8.05 Fog/Mist SCT008 16 15 94% 76.23 0.0
28 15:55 N 17 8.05 Fog/Mist BKN007 16 15 94% 76.2 0.0
28 15:35 N 17 8.05 Fog/Mist BKN008 16 15 94% 76.25 0.0
28 15:15 NW 17 9.66 Fog/Mist OVC008 16 15 94% 76.25 0.0
28 14:55 N 15 9.66 Fog/Mist BKN008 16 15 94% 76.28 0.0
28 14:35 NW 15 8.05 Fog/Mist BKN008 16 15 94% 76.3 0.0
28 14:15 N 11 6.44 Fog/Mist BKN008 16 16 100% 76.3 0.0
28 13:55 N 15 G 24 8.05 Fog/Mist BKN008 BKN013 16 15 94% 76.33 0.0
28 13:35 N 15 8.05 Fog/Mist BKN008 BKN013 16 15 94% 76.33 0.0
28 13:15 NW 15 8.05 Fog/Mist BKN008 16 16 100% 76.33 0.0
28 12:55 N 11 G 22 8.05 Fog/Mist OVC008 15 15 100% 76.35 0.0
28 12:35 NW 15 6.44 Fog/Mist OVC007 15 15 100% 76.35 0.0
28 12:15 N 13 6.44 Fog/Mist OVC005 15 15 100% 76.35 0.0
28 11:55 N 17 6.44 Fog/Mist OVC004 15 15 100% 76.35 0.0
28 11:35 N 19 4.83 Fog/Mist OVC004 15 15 100% 76.33 0.0
28 11:15 NW 19 4.02 Fog/Mist OVC004 15 15 100% 76.3 0.0
28 10:55 N 13 4.83 Fog/Mist OVC004 15 15 100% 76.3 0.0
Date Time (pdt) Wind (kph) Vis. (km) Weather Sky Cond. Air Dwpt Max. Min. Relative Humidity Wind Chill (°C) Heat Index (°C) altimeter (cm) sea level (mb) 1 hr 3 hr 6 hr
6 hour
Temperature (ºC) Pressure Precipitation (cm)