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.
22 13:55 W 11 6.44 Fog/Mist FEW008 BKN013 14 14 100% 76.17 0.0
22 13:35 W 11 8.05 Fog/Mist BKN012 15 14 94% 76.17 0.0
22 13:15 W 9 11.27 Mostly Cloudy BKN012 15 14 94% 76.17 0.0
22 12:55 NW 11 8.05 Fog/Mist FEW008 FEW013 14 14 100% 76.17 0.0
22 12:35 NW 13 8.05 Fog/Mist FEW008 15 14 94% 76.17 0.0
22 12:15 W 11 8.05 Fog/Mist FEW007 15 14 94% 76.17 0.0
22 11:55 W 9 4.02 Fog/Mist BKN007 14 14 100% 76.15 0.0
22 11:35 W 6 6.44 Fog/Mist SCT007 14 14 100% 76.15 0.0
22 11:15 W 7 4.83 Fog/Mist SCT007 14 14 100% 76.15 0.0
22 10:55 Calm 6.44 Fog/Mist SCT007 14 14 100% 76.15 0.0
22 10:35 Calm 6.44 Fog/Mist SCT008 14 14 100% 76.12 0.0
22 10:15 NW 7 8.05 Fog/Mist BKN008 14 13 94% 76.12 0.0
22 09:55 W 6 8.05 Fog/Mist BKN007 13 13 100% 76.12 0.0
22 09:35 W 9 6.44 Fog/Mist OVC007 13 13 100% 76.12 0.0
22 09:15 W 9 4.83 Fog/Mist BKN008 13 13 100% 76.12 0.0
22 08:55 NW 7 8.05 Fog/Mist BKN008 13 13 100% 76.12 0.0
22 08:35 W 9 8.05 Overcast OVC008 0 0 0% 76.1 0.0
22 08:15 W 7 6.44 Fog/Mist OVC008 13 13 100% 76.1 0.0
22 07:55 Calm 8.05 Fog/Mist BKN009 13 13 100% 76.1 0.0
22 07:35 Calm 4.02 Fog/Mist OVC008 13 13 100% 76.1 0.0
22 07:15 Calm 8.05 Fog/Mist OVC009 13 13 100% 76.07 0.0
22 06:55 Calm 4.02 Fog/Mist OVC008 13 13 100% 76.07 0.0
22 06:35 Calm 4.83 Fog/Mist OVC008 13 13 100% 76.07 0.0
22 06:15 NW 6 4.83 Fog/Mist OVC008 13 13 100% 76.05 0.0
22 05:55 Calm 8.05 Fog/Mist OVC008 13 13 100% 76.05 0.0
22 05:35 NW 7 8.05 Fog/Mist OVC008 13 13 100% 76.05 0.0
22 05:15 W 7 8.05 Fog/Mist OVC008 13 13 100% 76.02 0.0
22 04:55 W 7 4.02 Fog/Mist OVC007 13 13 100% 76.05 0.0
22 04:35 Calm 6.44 Overcast OVC008 0 0 0% 76.02 0.0
22 04:15 NW 6 8.05 Fog/Mist OVC008 13 13 100% 76.02 0.0
22 03:55 Calm 6.44 Fog/Mist OVC008 13 13 100% 76.02 0.0
22 03:35 W 7 6.44 Fog/Mist OVC007 13 13 100% 76.02 0.0
22 03:15 Calm 6.44 Fog/Mist OVC008 13 13 100% 76.02 0.0
22 02:55 Calm 6.44 Fog/Mist OVC008 13 13 100% 76.02 0.0
22 02:35 Vrbl 6 8.05 Fog/Mist OVC008 13 13 100% 76.02 0.0
22 02:15 W 6 8.05 Fog/Mist OVC008 13 13 100% 76.02 0.0
22 01:55 Calm 6.44 Fog/Mist OVC008 13 13 100% 76.02 0.0
22 01:35 NW 7 8.05 Fog/Mist OVC008 13 13 100% 76.05 0.0
22 01:15 W 6 8.05 Fog/Mist OVC007 13 13 100% 76.05 0.0
22 00:55 NW 6 6.44 Fog/Mist OVC007 13 13 100% 76.05 0.0
22 00:35 W 7 6.44 Fog/Mist OVC007 13 13 100% 76.05 0.0
22 00:15 Calm 6.44 Fog/Mist OVC007 13 13 100% 76.05 0.0
21 23:55 Calm 6.44 Fog/Mist OVC006 13 13 100% 76.05 0.0
21 23:35 W 9 8.05 Fog/Mist OVC006 13 13 100% 76.05 0.0
21 23:15 NW 11 6.44 Fog/Mist OVC006 13 13 100% 76.05 0.0
21 22:55 Calm 8.05 Fog/Mist OVC006 13 13 100% 76.05 0.0
21 22:35 Calm 8.05 Fog/Mist OVC006 13 13 100% 76.05 0.0
21 22:15 NW 7 8.05 Fog/Mist OVC006 13 13 100% 76.05 0.0
21 21:55 Calm 8.05 Fog/Mist OVC007 13 13 100% 76.02 0.0
21 21:35 Calm 8.05 Fog/Mist OVC007 13 13 100% 76.02 0.0
21 21:15 Vrbl 6 8.05 Fog/Mist OVC007 13 13 100% 76 0.0
21 20:55 NW 6 8.05 Fog/Mist OVC007 13 13 100% 76 0.0
21 20:35 NW 9 4.83 Fog/Mist OVC007 13 13 100% 76 0.0
21 20:15 NW 11 4.83 Fog/Mist OVC007 13 13 100% 76 0.0
21 19:15 NW 9 G 19 6.44 Fog/Mist OVC007 14 14 100% 76 0.0
21 18:55 NW 15 4.83 Fog/Mist OVC008 14 14 100% 76 0.0
21 18:35 NW 11 6.44 Fog/Mist OVC007 14 14 100% 76 0.0
21 18:15 NW 13 6.44 Fog/Mist OVC007 14 14 100% 76 0.0
21 17:55 NW 13 4.83 Fog/Mist OVC006 14 14 100% 76 0.0
21 17:35 Vrbl 7 9.66 Fog/Mist OVC007 14 14 100% 76 0.0
21 17:15 NW 9 11.27 Overcast OVC007 14 14 100% 76 0.0
21 16:55 W 11 6.44 Fog/Mist BKN008 15 14 94% 76.02 0.0
21 16:35 W 11 6.44 Mostly Cloudy BKN008 0 0 0% 76.02 0.0
21 16:15 W 11 6.44 Fog/Mist SCT008 SCT013 15 14 94% 76.02 0.0
21 15:55 Vrbl 7 8.05 Fog/Mist SCT012 15 14 94% 76.02 0.0
21 15:35 W 11 8.05 Fog/Mist FEW008 BKN013 16 14 88% 76.05 0.0
21 15:15 W 13 8.05 Fog/Mist SCT012 16 14 88% 76.05 0.0
21 14:55 W 15 9.66 Fog/Mist BKN013 16 15 94% 76.05 0.0
21 14:35 W 15 11.27 Overcast OVC013 16 14 88% 76.05 0.0
21 14:15 W 15 11.27 Overcast OVC013 17 14 83% 76.05 0.0
21 13:55 SW 13 11.27 Overcast OVC013 17 14 83% 76.05 0.0
21 13:35 W 15 8.05 Fog/Mist OVC013 16 14 88% 76.05 0.0
21 13:15 W 11 11.27 Overcast OVC013 16 14 88% 76.07 0.0
21 12:55 W 13 11.27 Overcast OVC013 16 14 88% 76.07 0.0
21 12:35 SW 13 11.27 Overcast OVC013 15 14 94% 76.07 0.0
21 12:15 SW 11 14.48 Overcast OVC013 15 14 94% 76.07 0.0
21 11:55 W 9 6.44 Fog/Mist SCT013 15 14 94% 76.1 0.0
21 11:35 SW 11 11.27 A Few Clouds FEW012 15 14 94% 76.07 0.0
21 11:15 W 13 9.66 Fog/Mist BKN012 15 14 94% 76.07 0.0
21 10:55 W 11 14.48 Mostly Cloudy BKN012 15 14 94% 76.07 0.0
21 10:35 SW 9 12.87 Mostly Cloudy BKN011 0 0 0% 76.1 0.0
21 10:15 W 7 11.27 Partly Cloudy SCT009 SCT013 14 14 100% 76.1 0.0
21 09:55 SW 7 11.27 Mostly Cloudy BKN009 14 14 100% 76.1 0.0
21 09:35 Calm 11.27 Mostly Cloudy BKN009 14 14 100% 76.1 0.0
21 09:15 SW 7 11.27 Mostly Cloudy BKN009 BKN013 14 14 100% 76.1 0.0
21 08:55 Calm 14.48 Mostly Cloudy BKN009 BKN013 14 14 100% 76.1 0.0
21 08:35 Calm 11.27 Overcast OVC008 14 14 100% 76.1 0.0
21 08:15 Calm 9.66 Fog/Mist OVC008 14 14 100% 76.1 0.0
21 07:55 Calm 8.05 Fog/Mist OVC008 14 14 100% 76.07 0.0
21 07:35 Calm 9.66 Fog/Mist OVC008 14 14 100% 76.07 0.0
21 07:15 Calm 9.66 Fog/Mist OVC008 13 13 100% 76.07 0.0
21 06:55 Calm 8.05 Fog/Mist OVC008 13 13 100% 76.07 0.0
21 06:35 NW 6 9.66 Fog/Mist OVC008 13 13 100% 76.07 0.0
21 06:15 W 7 11.27 Overcast OVC008 13 13 100% 76.05 0.0
21 05:55 Calm 9.66 Fog/Mist OVC008 13 13 100% 76.05 0.0
21 05:35 W 7 9.66 Fog/Mist OVC007 13 13 100% 76.05 0.0
21 05:15 Calm 6.44 Fog/Mist OVC007 13 13 100% 76.05 0.0
21 04:55 Calm 9.66 Fog/Mist OVC007 13 13 100% 76.07 0.0
21 04:35 Calm 8.05 Fog/Mist OVC007 13 13 100% 76.07 0.0
21 04:15 W 9 9.66 Overcast OVC007 0 0 0% 76.07 0.0
21 03:55 Calm 12.87 Overcast OVC007 13 13 100% 76.07 0.0
21 03:35 NW 9 14.48 Overcast OVC007 13 13 100% 76.07 0.0
21 03:15 Calm 14.48 Overcast OVC007 13 13 100% 76.07 0.0
21 02:55 NW 6 14.48 Overcast OVC009 14 14 100% 76.07 0.0
21 02:35 NW 6 12.87 Overcast OVC009 14 14 100% 76.07 0.0
21 02:15 NW 9 12.87 Overcast OVC011 14 14 100% 76.1 0.0
21 01:55 W 7 14.48 Overcast OVC013 14 13 94% 76.1 0.0
21 01:35 NW 7 14.48 Overcast OVC012 14 14 100% 76.12 0.0
21 01:15 NW 13 14.48 Overcast OVC013 14 14 100% 76.12 0.0
21 00:55 N 11 16.09 Overcast OVC014 14 14 100% 76.12 0.0
21 00:35 NW 11 16.09 Overcast OVC016 14 13 94% 76.12 0.0
21 00:15 NW 9 14.48 Overcast OVC016 14 13 94% 76.15 0.0
20 23:55 NW 11 14.48 Overcast OVC017 14 13 94% 76.15 0.0
20 23:35 N 9 16.09 Overcast OVC017 14 13 94% 76.15 0.0
20 23:15 NW 11 14.48 Overcast OVC019 14 13 94% 76.15 0.0
20 22:55 NW 9 14.48 Mostly Cloudy BKN017 14 13 94% 76.17 0.0
20 22:35 NW 11 14.48 Mostly Cloudy BKN013 14 14 100% 76.2 0.0
20 22:15 NW 15 14.48 A Few Clouds FEW012 14 14 100% 76.17 0.0
20 21:55 NW 11 14.48 Partly Cloudy SCT011 14 14 100% 76.17 0.0
20 21:35 NW 15 14.48 A Few Clouds FEW011 14 14 100% 76.17 0.0
20 21:15 N 17 14.48 Fair CLR 0 0 0% 76.17 0.0
20 20:55 N 11 14.48 Fair CLR 14 14 100% 76.15 0.0
20 20:35 N 11 14.48 Fair CLR 15 14 94% 76.15 0.0
20 20:15 NW 13 14.48 Fair CLR 15 15 100% 76.17 0.0
20 19:55 NW 19 12.87 A Few Clouds FEW009 FEW013 15 15 100% 76.17 0.0
20 19:35 N 19 14.48 A Few Clouds FEW013 16 15 94% 76.17 0.0
20 19:15 NW 17 14.48 Fair CLR 17 14 83% 76.17 0.0
20 18:55 NW 15 14.48 Fair CLR 17 14 83% 76.17 0.0
20 18:35 NW 15 14.48 Fair CLR 17 14 83% 76.17 0.0
20 18:15 NW 17 16.09 Fair CLR 17 14 83% 76.17 0.0
20 17:55 NW 13 14.48 Fair CLR 18 14 78% 76.17 0.0
20 17:35 NW 15 14.48 Fair CLR 18 14 78% 76.17 0.0
20 17:15 NW 13 14.48 Fair CLR 18 14 78% 76.17 0.0
20 16:55 NW 15 14.48 Fair CLR 18 14 78% 76.2 0.0
20 16:35 NW 15 12.87 Fair CLR 18 14 78% 76.2 0.0
20 16:15 NW 15 14.48 Fair CLR 18 14 78% 76.2 0.0
20 15:55 NW 13 14.48 Fair CLR 18 14 78% 76.2 0.0
20 15:35 NW 15 14.48 Fair CLR 18 14 78% 76.23 0.0
20 15:15 NW 15 14.48 Fair CLR 18 14 78% 76.23 0.0
20 14:55 NW 15 12.87 Fair CLR 18 14 78% 76.25 0.0
20 14:35 NW 17 14.48 Partly Cloudy SCT030 18 14 78% 76.25 0.0
20 14:15 NW 13 14.48 Overcast OVC030 19 15 78% 76.25 0.0
20 13:55 NW 15 14.48 Overcast OVC031 19 14 73% 76.25 0.0
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
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)