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.
20 13:35 W 13 14.48 Overcast OVC031 19 14 73% 76.25 0.0
20 13:15 NW 13 14.48 Overcast OVC032 18 14 78% 76.25 0.0
20 12:55 W 11 14.48 Overcast OVC033 19 14 73% 76.25 0.0
20 12:35 Vrbl 9 14.48 Overcast OVC033 18 14 78% 76.28 0.0
20 12:15 W 11 16.09 Overcast OVC033 18 14 78% 76.28 0.0
20 11:55 W 7 14.48 Overcast OVC032 0 0 0% 76.28 0.0
20 11:35 SW 9 14.48 Overcast OVC031 18 13 73% 76.28 0.0
20 11:15 W 9 12.87 Overcast OVC030 18 13 73% 76.25 0.0
20 10:55 Vrbl 7 14.48 Overcast OVC029 18 13 73% 76.25 0.0
20 10:35 SW 9 14.48 Overcast OVC030 0 0 0% 76.23 0.0
20 10:15 Vrbl 6 16.09 Overcast OVC030 0 0 0% 76.23 0.0
20 09:55 Vrbl 7 14.48 Overcast OVC029 17 13 77% 76.23 0.0
20 09:35 W 9 12.87 Overcast OVC028 17 13 77% 76.23 0.0
20 09:15 SW 6 14.48 Overcast OVC028 17 13 77% 76.23 0.0
20 08:55 Calm 14.48 Overcast OVC027 17 13 77% 76.2 0.0
20 08:35 S 6 12.87 Overcast OVC027 17 13 77% 76.2 0.0
20 08:15 S 6 11.27 Overcast OVC027 17 14 83% 76.2 0.0
20 07:55 S 6 9.66 Overcast with Haze OVC027 16 14 88% 76.17 0.0
20 07:35 SW 6 9.66 Fog/Mist OVC026 16 14 88% 76.17 0.0
20 07:15 Calm 12.87 Overcast OVC027 16 14 88% 76.17 0.0
20 06:55 Calm 12.87 Overcast OVC028 16 14 88% 76.17 0.0
20 06:35 Calm 12.87 Overcast OVC027 15 14 94% 76.17 0.0
20 06:15 Calm 9.66 Fog/Mist OVC025 16 14 88% 76.15 0.0
20 05:55 Calm 12.87 Overcast OVC026 16 14 88% 76.15 0.0
20 05:35 Calm 12.87 Overcast OVC028 15 15 100% 76.15 0.0
20 05:15 Calm 14.48 Overcast OVC028 15 15 100% 76.15 0.0
20 04:55 Calm 12.87 Overcast OVC029 15 15 100% 76.15 0.0
20 04:35 S 6 12.87 Overcast OVC029 16 15 94% 76.15 0.0
20 04:15 S 6 12.87 Overcast OVC029 16 15 94% 76.15 0.0
20 03:55 S 7 11.27 Overcast OVC028 16 16 100% 76.15 0.0
20 03:35 S 7 12.87 Overcast OVC029 16 15 94% 76.15 0.0
20 03:15 Calm 14.48 Overcast OVC029 16 15 94% 76.17 0.0
20 02:55 S 7 11.27 Overcast OVC029 16 15 94% 76.17 0.0
20 02:35 S 9 14.48 Overcast OVC030 16 15 94% 76.17 0.0
20 02:15 S 7 14.48 Overcast OVC029 16 15 94% 76.17 0.0
20 01:55 S 7 12.87 Overcast FEW022 OVC028 16 15 94% 76.2 0.0
20 01:35 S 6 11.27 Overcast FEW018 OVC026 16 15 94% 76.2 0.0
20 01:15 S 7 11.27 Overcast OVC027 16 16 100% 76.2 0.0
20 00:55 S 7 11.27 Overcast FEW019 OVC026 16 16 100% 76.2 0.0
20 00:35 S 7 11.27 Overcast FEW010 SCT020 OVC025 16 16 100% 76.2 0.0
20 00:15 S 9 12.87 Overcast SCT011 BKN017 OVC026 16 16 100% 76.23 0.0
19 23:35 SW 13 9.66 Fog/Mist SCT013 SCT018 OVC025 16 15 94% 76.25 0.0
19 23:15 S 7 9.66 Fog/Mist OVC028 16 16 100% 76.25 0.0
19 22:55 S 13 9.66 Fog/Mist OVC029 16 16 100% 76.25 0.0
19 22:35 S 13 9.66 Fog/Mist OVC030 16 16 100% 76.25 0.0
19 22:15 S 13 8.05 Fog/Mist OVC030 16 16 100% 76.25 0.0
19 21:55 S 13 9.66 Fog/Mist OVC030 16 16 100% 76.23 0.0
19 21:35 S 17 9.66 Fog/Mist OVC031 16 16 100% 76.23 0.0
19 21:15 S 15 9.66 Fog/Mist OVC031 16 16 100% 76.23 0.0
19 20:55 S 19 9.66 Fog/Mist OVC032 16 16 100% 76.2 0.0
19 20:35 S 19 9.66 Fog/Mist OVC033 16 16 100% 76.2 0.0
19 20:15 S 17 9.66 Fog/Mist OVC032 16 16 100% 76.2 0.0
19 19:55 S 19 9.66 Fog/Mist OVC029 16 16 100% 76.2 0.0
19 19:35 S 17 9.66 Overcast FEW018 OVC028 0 0 0% 76.2 0.0
19 19:15 S 15 8.05 Fog/Mist FEW011 SCT018 OVC027 16 16 100% 76.2 0.0
19 18:55 S 19 9.66 Fog/Mist OVC028 16 16 100% 76.17 0.0
19 18:35 S 19 9.66 Fog/Mist OVC028 16 16 100% 76.17 0.0
19 18:15 S 19 9.66 Fog/Mist OVC028 16 15 94% 76.17 0.0
19 17:55 S 20 G 31 9.66 Fog/Mist OVC027 16 15 94% 76.17 0.0
19 17:35 S 22 9.66 Fog/Mist OVC027 16 16 100% 76.17 0.0
19 17:15 S 20 G 30 9.66 Fog/Mist OVC030 17 16 94% 76.17 0.0
19 16:55 S 19 G 30 9.66 Fog/Mist OVC031 17 16 94% 76.17 0.0
19 16:35 SW 22 G 33 9.66 Fog/Mist OVC030 17 15 88% 76.17 0.0
19 16:15 S 20 G 31 9.66 Fog/Mist OVC029 17 15 88% 76.2 0.0
19 15:55 S 20 9.66 Fog/Mist OVC029 17 15 88% 76.2 0.0
19 15:35 S 22 G 31 11.27 Overcast OVC030 17 15 88% 76.23 0.0
19 15:15 S 20 G 31 9.66 Fog/Mist OVC029 18 15 83% 76.23 0.0
19 14:55 S 24 G 37 9.66 Fog/Mist OVC026 17 15 88% 76.23 0.0
19 14:35 S 22 9.66 Fog/Mist OVC029 17 15 88% 76.23 0.0
19 13:55 S 22 9.66 Fog/Mist OVC027 17 15 88% 76.25 0.0
19 13:35 S 26 9.66 Fog/Mist OVC028 17 15 88% 76.25 0.0
19 13:15 S 22 9.66 Overcast with Haze OVC029 18 15 83% 76.25 0.0
19 12:55 S 24 9.66 Overcast with Haze OVC029 17 15 88% 76.25 0.0
19 12:35 S 19 9.66 Fog/Mist OVC029 17 15 88% 76.25 0.0
19 12:15 S 17 11.27 Overcast OVC027 16 15 94% 76.23 0.0
19 11:55 S 19 12.87 Overcast FEW013 OVC024 16 15 94% 76.23 0.0
19 11:35 S 22 8.05 Fog/Mist FEW014 OVC021 16 15 94% 76.23 0.0
19 11:15 S 15 11.27 Overcast BKN019 OVC025 16 15 94% 76.2 0.0
19 10:55 S 17 9.66 Fog/Mist BKN018 OVC025 16 15 94% 76.2 0.0
19 10:35 S 17 6.44 Fog/Mist OVC019 16 15 94% 76.2 0.0
19 10:15 S 24 4.83 Fog/Mist OVC018 16 14 88% 76.17 0.0
19 09:55 S 17 G 30 6.44 Overcast BKN018 OVC022 0 0 0% 76.17 0.0
19 09:35 S 17 8.05 Fog/Mist OVC020 16 14 88% 76.17 0.0
19 09:15 S 19 8.05 Fog/Mist OVC018 16 14 88% 76.15 0.0
19 08:55 S 15 8.05 Fog/Mist OVC017 16 15 94% 76.15 0.0
19 08:35 S 17 9.66 Fog/Mist OVC020 16 14 88% 76.17 0.0
19 07:55 S 15 9.66 Fog/Mist OVC021 16 14 88% 76.12 0.0
19 07:35 S 15 11.27 Overcast OVC022 15 14 94% 76.12 0.0
19 07:15 S 15 9.66 Fog/Mist OVC022 15 14 94% 76.12 0.0
19 06:55 S 15 9.66 Fog/Mist OVC023 15 14 94% 76.1 0.0
19 06:35 S 15 9.66 Fog/Mist OVC022 15 14 94% 76.1 0.0
19 06:15 S 15 9.66 Fog/Mist OVC023 15 14 94% 76.07 0.0
19 05:55 S 17 12.87 Overcast OVC023 15 14 94% 76.07 0.0
19 05:35 S 13 12.87 Overcast OVC022 15 15 100% 76.07 0.0
19 05:15 S 13 12.87 Overcast OVC020 15 14 94% 76.07 0.0
19 04:55 S 17 12.87 Overcast OVC021 15 15 100% 76.05 0.0
19 04:35 S 17 12.87 Overcast OVC021 15 14 94% 76.05 0.0
19 04:15 S 17 11.27 Overcast OVC020 0 0 0% 76.05 0.0
19 03:55 S 13 G 22 12.87 Overcast OVC019 15 14 94% 76.05 0.0
19 03:35 S 17 14.48 Overcast OVC020 15 14 94% 76.05 0.0
19 03:15 S 15 G 24 12.87 Overcast OVC019 15 14 94% 76.05 0.0
19 02:55 S 15 12.87 Overcast OVC019 15 14 94% 76.07 0.0
19 02:35 S 19 14.48 Overcast OVC020 15 14 94% 76.07 0.0
19 02:15 S 15 12.87 Overcast OVC018 15 15 100% 76.07 0.0
19 01:55 S 15 12.87 Overcast OVC019 15 15 100% 76.07 0.0
19 01:35 S 15 11.27 Overcast OVC020 15 15 100% 76.07 0.0
19 01:15 S 15 11.27 Overcast OVC020 15 15 100% 76.1 0.0
19 00:55 S 17 11.27 Overcast OVC020 15 15 100% 76.1 0.0
19 00:35 S 13 11.27 Overcast OVC019 15 15 100% 76.12 0.0
19 00:15 S 15 11.27 Overcast OVC021 15 15 100% 76.12 0.0
18 23:55 S 17 11.27 Overcast FEW014 OVC022 15 15 100% 76.1 0.0
18 23:35 S 19 6.44 Fog/Mist BKN014 OVC020 15 15 100% 76.12 0.0
18 23:15 S 22 6.44 Fog/Mist FEW006 OVC015 15 15 100% 76.15 0.0
18 22:55 S 26 3.22 Overcast SCT010 OVC016 0 0 0% 76.15 0.0
18 22:35 S 22 9.66 Fog/Mist BKN010 BKN013 OVC021 15 15 100% 76.12 0.0
18 22:15 S 22 12.87 Overcast FEW013 OVC020 15 15 100% 76.12 0.0
18 21:55 S 24 4.02 Fog/Mist FEW013 OVC020 15 15 100% 76.1 0.0
18 21:35 S 19 12.87 Overcast OVC019 15 15 100% 76.1 0.0
18 21:15 S 19 G 28 8.05 Fog/Mist OVC017 15 15 100% 76.07 0.0
18 20:55 S 19 12.87 Overcast OVC018 15 15 100% 76.07 0.0
18 20:35 S 19 G 28 4.02 Fog/Mist OVC017 15 15 100% 76.07 0.0
18 20:15 S 17 8.05 Fog/Mist FEW008 OVC018 15 15 100% 76.07 0.0
18 19:35 S 15 G 28 8.05 Fog/Mist OVC018 16 16 100% 76.07 0.0
18 19:15 S 19 11.27 Overcast OVC018 16 16 100% 76.05 0.0
18 18:55 S 20 11.27 Overcast OVC017 16 16 100% 76.05 0.0
18 18:35 S 24 14.48 Overcast FEW006 OVC018 16 16 100% 76.05 0.0
18 18:15 S 15 G 26 4.02 Fog/Mist SCT006 OVC015 16 16 100% 76.05 0.0
18 17:55 S 26 11.27 Overcast FEW007 OVC013 16 16 100% 76.05 0.0
18 17:35 S 22 11.27 Overcast OVC016 0 0 0% 76.05 0.0
18 17:15 S 24 G 37 3.22 Fog/Mist FEW006 OVC014 16 16 100% 76.05 0.0
18 16:55 S 26 G 35 3.22 Fog/Mist BKN015 OVC019 16 16 100% 76.07 0.0
18 16:35 S 26 G 37 11.27 Overcast OVC018 17 16 94% 76.05 0.0
18 16:15 S 24 G 35 12.87 Overcast BKN013 OVC018 17 16 94% 76.05 0.0
18 15:55 S 26 12.87 Mostly Cloudy FEW005 SCT013 BKN018 17 16 94% 76.05 0.0
18 15:35 S 22 G 33 3.22 Fog/Mist FEW005 BKN014 16 16 100% 76.07 0.0
18 15:15 S 24 11.27 Mostly Cloudy BKN014 17 16 94% 76.07 0.0
18 14:55 S 20 G 37 12.87 Overcast OVC016 17 16 94% 76.07 0.0
18 14:35 S 19 G 28 12.87 Overcast OVC017 17 16 94% 76.07 0.0
18 14:15 S 20 G 30 14.48 Overcast OVC015 17 16 94% 76.07 0.0
18 13:55 S 19 G 30 14.48 Mostly Cloudy FEW005 BKN013 BKN026 17 16 94% 76.07 0.0
18 13:35 S 19 G 31 12.87 Mostly Cloudy FEW006 BKN025 17 16 94% 76.1 0.0
18 13:15 S 20 G 31 12.87 Overcast OVC024 0 0 0% 76.07 0.0
18 12:55 S 20 G 35 14.48 Overcast OVC023 17 15 88% 76.07 0.0
18 12:35 S 19 14.48 Overcast OVC024 17 16 94% 76.07 0.0
18 12:15 S 19 G 33 12.87 Overcast OVC025 16 15 94% 76.05 0.0
18 11:55 SW 20 G 33 12.87 Overcast OVC023 16 15 94% 76.05 0.0
18 11:35 S 19 G 28 14.48 Mostly Cloudy FEW015 BKN023 BKN027 16 15 94% 76.05 0.0
18 11:15 SW 19 G 31 12.87 Overcast BKN015 OVC022 17 15 88% 76.05 0.0
18 10:55 S 20 11.27 Mostly Cloudy SCT014 BKN020 BKN024 17 15 88% 76.05 0.0
18 10:35 S 22 12.87 Mostly Cloudy SCT015 BKN023 17 15 88% 76.02 0.0
18 10:15 S 19 14.48 Overcast BKN013 OVC019 17 15 88% 76.05 0.0
18 09:55 S 20 9.66 Fog/Mist SCT014 OVC020 16 15 94% 76.05 0.0
18 09:35 S 20 9.66 Fog/Mist BKN014 OVC020 16 15 94% 76.05 0.0
18 09:15 S 19 14.48 Overcast OVC015 16 15 94% 76.05 0.0
18 08:55 S 17 12.87 Overcast OVC014 16 15 94% 76.02 0.0
18 08:35 S 17 11.27 Overcast OVC014 15 15 100% 76.02 0.0
18 08:15 S 17 11.27 Overcast OVC013 15 15 100% 76.02 0.0
18 07:55 S 17 12.87 Overcast OVC015 15 15 100% 76.02 0.0
18 07:35 S 17 12.87 Overcast FEW008 OVC016 0 0 0% 76.02 0.0
18 07:15 S 15 11.27 Overcast SCT008 OVC016 14 14 100% 76.02 0.0
18 06:55 S 15 8.05 Fog/Mist FEW009 OVC016 14 14 100% 76.02 0.0
18 06:35 S 19 12.87 Overcast OVC017 14 14 100% 76.02 0.0
18 06:15 S 17 14.48 Overcast BKN016 OVC020 14 14 100% 76 0.0
18 05:55 S 13 G 24 14.48 Overcast BKN016 OVC021 14 14 100% 76 0.0
18 05:35 S 17 14.48 Overcast OVC014 14 14 100% 75.97 0.0
18 05:15 S 20 12.87 Overcast OVC013 14 14 100% 75.97 0.0
18 04:55 S 13 12.87 Overcast OVC013 14 14 100% 75.97 0.0
18 04:35 S 11 11.27 Overcast BKN009 OVC013 14 14 100% 75.97 0.0
18 04:15 S 13 8.05 Fog/Mist OVC008 14 14 100% 75.97 0.0
18 03:55 S 15 6.44 Fog/Mist BKN008 OVC012 14 14 100% 75.97 0.0
18 03:35 S 13 4.83 Fog/Mist OVC009 14 14 100% 75.97 0.0
18 03:15 S 15 4.83 Fog/Mist OVC009 14 14 100% 75.97 0.0
18 02:55 S 11 4.83 Fog/Mist BKN008 OVC012 14 14 100% 75.97 0.0
18 02:15 SW 13 2.82 Fog/Mist BKN005 OVC010 13 13 100% 76 0.0
18 01:55 S 11 3.22 Fog/Mist BKN004 OVC009 13 13 100% 76 0.0
18 01:35 S 13 2.01 Fog/Mist OVC004 13 13 100% 76 0.0
18 01:15 Vrbl 9 G 20 2.41 Fog/Mist OVC004 13 13 100% 76 0.0
18 00:55 SW 7 G 20 3.22 Fog/Mist BKN005 OVC010 14 14 100% 76 0.0
18 00:35 Vrbl 9 4.02 Fog/Mist OVC007 14 14 100% 76 0.0
18 00:15 SW 7 6.44 Fog/Mist OVC010 14 14 100% 76 0.0
17 23:55 S 11 6.44 Fog/Mist OVC010 14 14 100% 76 0.0
17 23:35 Vrbl 9 8.05 Fog/Mist OVC011 14 14 100% 76 0.0
17 23:15 S 13 9.66 Fog/Mist OVC011 14 14 100% 76.02 0.0
17 22:55 S 13 8.05 Fog/Mist OVC011 14 14 100% 76.02 0.0
17 22:35 S 13 6.44 Fog/Mist OVC011 14 14 100% 76.02 0.0
17 22:15 S 13 9.66 Fog/Mist OVC010 14 14 100% 76.02 0.0
17 21:55 S 11 9.66 Fog/Mist OVC011 14 14 100% 76 0.0
17 21:35 S 11 9.66 Fog/Mist FEW005 OVC011 14 14 100% 76 0.0
17 21:15 S 9 G 19 9.66 Fog/Mist BKN005 OVC010 14 14 100% 75.97 0.0
17 20:55 Vrbl 9 8.05 Fog/Mist BKN004 OVC009 14 14 100% 75.97 0.0
17 20:35 Calm 4.02 Fog/Mist OVC003 14 14 100% 75.97 0.0
17 20:15 S 7 4.83 Fog/Mist OVC003 14 14 100% 75.95 0.0
17 19:55 Vrbl 7 4.83 Fog/Mist OVC003 14 14 100% 75.95 0.0
17 19:35 S 7 4.83 Fog/Mist OVC004 14 14 100% 75.97 0.0
17 19:15 SW 13 4.02 Fog/Mist BKN004 OVC009 15 15 100% 75.95 0.0
17 18:55 S 15 G 26 4.83 Fog/Mist BKN005 BKN009 BKN015 15 15 100% 75.95 0.0
17 18:35 S 19 4.83 Fog/Mist BKN005 BKN015 16 16 100% 75.95 0.0
17 18:15 S 19 G 30 4.83 Fog/Mist BKN005 BKN008 BKN014 16 16 100% 75.97 0.0
17 17:55 S 17 G 28 4.83 Fog/Mist BKN008 16 16 100% 75.97 0.0
17 17:35 S 19 G 28 4.83 Fog/Mist BKN007 16 16 100% 75.97 0.0
17 17:15 S 19 4.83 Fog/Mist BKN009 BKN013 16 16 100% 76 0.0
17 16:55 S 20 6.44 Fog/Mist SCT009 BKN013 16 16 100% 76 0.0
17 16:35 S 20 6.44 Fog/Mist OVC013 17 16 94% 76 0.0
17 16:15 S 24 8.05 Fog/Mist OVC014 17 16 94% 76 0.0
17 15:55 S 24 8.05 Fog/Mist OVC015 17 16 94% 76 0.0
17 15:35 S 20 8.05 Fog/Mist FEW008 BKN013 0 0 0% 76 0.0
17 15:15 S 22 9.66 Fog/Mist BKN014 OVC022 17 16 94% 76 0.0
17 14:55 S 26 9.66 Fog/Mist FEW008 SCT016 BKN022 18 16 88% 76 0.0
17 14:35 S 22 9.66 Fog/Mist FEW007 BKN022 18 16 88% 76.02 0.0
17 14:15 S 19 9.66 Fog/Mist OVC022 18 16 88% 76.02 0.0
17 13:55 S 22 12.87 Overcast OVC021 17 15 88% 76.02 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)