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.
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
28 10:35 NW 13 6.44 Fog/Mist OVC005 15 15 100% 76.3 0.0
28 10:15 NW 11 4.02 Fog/Mist BKN004 OVC008 15 15 100% 76.3 0.0
28 09:55 NW 7 3.22 Fog/Mist OVC004 15 15 100% 76.28 0.0
28 09:35 Calm 6.44 Fog/Mist OVC005 15 15 100% 76.28 0.0
28 09:15 Calm 4.83 Overcast OVC005 0 0 0% 76.28 0.0
28 08:55 N 6 6.44 Fog/Mist OVC005 15 15 100% 76.3 0.0
28 08:35 Calm 6.44 Overcast OVC005 0 0 0% 76.3 0.0
28 07:55 SE 7 8.05 Fog/Mist OVC005 14 14 100% 76.3 0.0
28 07:35 Calm 6.44 Fog/Mist OVC005 14 14 100% 76.3 0.0
28 07:15 Calm 4.83 Fog/Mist OVC004 14 14 100% 76.2 0.0
28 06:55 Calm 8.05 Overcast OVC003 0 0 0% 76.12 0.0
28 06:35 N 11 9.66 Fog/Mist OVC004 14 14 100% 76.1 0.0
28 06:15 NW 13 11.27 Overcast OVC004 14 14 100% 76.1 0.0
28 05:55 N 9 11.27 Overcast OVC004 14 14 100% 76.07 0.0
28 05:35 N 6 11.27 Overcast OVC004 14 14 100% 76.07 0.0
28 05:15 N 6 8.05 Fog/Mist OVC003 14 14 100% 76.07 0.0
28 04:55 NW 13 8.05 Fog/Mist OVC004 14 14 100% 76.05 0.0
28 04:35 Calm 9.66 Fog/Mist OVC004 14 14 100% 76.05 0.0
28 04:15 NW 15 9.66 Fog/Mist SCT006 SCT027 BKN075 14 14 100% 76.05 0.0
28 03:55 N 9 8.05 Fog/Mist SCT006 SCT041 14 14 100% 76.07 0.0
28 03:35 N 11 9.66 Fog/Mist BKN007 14 14 100% 76.1 0.0
28 03:15 N 13 9.66 Fog/Mist BKN008 15 15 100% 76.07 0.0
28 02:55 NW 13 9.66 Fog/Mist FEW009 15 15 100% 76.07 0.0
28 02:35 N 7 9.66 Fog/Mist BKN010 14 14 100% 76.07 0.0
28 02:15 N 11 8.05 Fog/Mist BKN009 14 14 100% 76.1 0.0
28 01:55 Calm 9.66 Fog/Mist BKN008 15 15 100% 76.1 0.0
28 01:35 N 7 9.66 Fog/Mist SCT009 15 15 100% 76.12 0.0
28 01:15 NW 13 9.66 Fog/Mist BKN009 15 15 100% 76.12 0.0
28 00:55 NW 11 9.66 Fog/Mist FEW010 15 15 100% 76.12 0.0
28 00:35 NW 9 9.66 Fog/Mist FEW010 14 14 100% 76.12 0.0
28 00:15 NW 9 8.05 Fog/Mist FEW008 15 15 100% 76.12 0.0
27 23:55 NW 15 9.66 Fog/Mist BKN009 15 15 100% 76.12 0.0
27 23:35 NW 15 9.66 Fog/Mist SCT009 15 15 100% 76.12 0.0
27 23:15 NW 13 8.05 Fog/Mist BKN008 15 15 100% 76.15 0.0
27 22:55 N 17 9.66 Fog/Mist SCT008 15 15 100% 76.12 0.0
27 22:35 NW 17 8.05 Fog/Mist SCT008 15 15 100% 76.15 0.0
27 22:15 N 15 8.05 Fog/Mist OVC008 15 15 100% 76.15 0.0
27 21:55 N 13 G 24 8.05 Fog/Mist OVC008 15 15 100% 76.17 0.0
27 21:35 N 13 G 24 9.66 Fog/Mist SCT010 16 16 100% 76.17 0.0
27 21:15 N 11 9.66 Fog/Mist CLR 16 16 100% 76.17 0.0
27 20:55 N 9 9.66 Fog/Mist CLR 16 15 94% 76.15 0.0
27 20:35 N 15 9.66 Fog/Mist CLR 16 16 100% 76.15 0.0
27 20:15 N 17 9.66 Fog/Mist CLR 16 16 100% 76.12 0.0
27 19:55 NW 17 6.44 Fog/Mist CLR 16 16 100% 76.12 0.0
27 19:35 N 20 6.44 Fog/Mist CLR 16 16 100% 76.12 0.0
27 19:15 N 19 6.44 Fog/Mist CLR 16 16 100% 76.12 0.0
27 18:55 N 19 6.44 Fog/Mist CLR 16 16 100% 76.15 0.0
27 18:35 N 26 8.05 Fog/Mist CLR 16 16 100% 76.15 0.0
27 18:15 NW 17 8.05 Fog/Mist CLR 16 15 94% 76.2 0.0
27 17:55 N 17 8.05 Fog/Mist CLR 17 16 94% 76.23 0.0
27 17:35 NW 19 8.05 Fog/Mist CLR 17 16 94% 76.23 0.0
27 17:15 NW 15 8.05 Fog/Mist CLR 17 16 94% 76.25 0.0
27 16:55 NW 13 9.66 Fog/Mist SCT004 16 16 100% 76.25 0.0
27 16:35 N 13 8.05 Fog/Mist OVC004 16 16 100% 76.25 0.0
27 16:15 NW 13 8.05 Fog/Mist BKN004 16 16 100% 76.25 0.0
27 15:55 NW 19 8.05 Fog/Mist FEW005 16 16 100% 76.23 0.0
27 15:35 NW 20 9.66 Fog/Mist CLR 17 16 94% 76.2 0.0
27 15:15 NW 19 9.66 Fog/Mist CLR 17 16 94% 76.23 0.0
27 14:55 NW 22 9.66 Fog/Mist CLR 17 16 94% 76.23 0.0
27 14:35 NW 22 11.27 Fair CLR 18 16 88% 76.23 0.0
27 14:15 NW 19 11.27 Fair CLR 17 16 94% 76.2 0.0
27 13:55 NW 20 11.27 Fair CLR 17 16 94% 76.23 0.0
27 13:35 NW 20 11.27 Fair CLR 17 16 94% 76.23 0.0
27 13:15 NW 19 11.27 Fair CLR 17 16 94% 76.25 0.0
27 12:55 NW 15 11.27 Fair CLR 17 16 94% 76.25 0.0
27 12:35 NW 15 11.27 Fair CLR 0 0 0% 76.25 0.0
27 12:15 NW 15 11.27 Fair CLR 17 16 94% 76.25 0.0
27 11:55 NW 20 12.87 Fair CLR 18 16 88% 76.25 0.0
27 11:35 NW 19 9.66 Fog/Mist CLR 18 16 88% 76.25 0.0
27 11:15 NW 22 12.87 Fair CLR 17 16 94% 76.25 0.0
27 10:55 N 17 G 26 9.66 Fog/Mist FEW004 16 16 100% 76.23 0.0
27 10:35 N 19 11.27 Mostly Cloudy BKN004 16 16 100% 76.23 0.0
27 10:15 NW 20 6.44 Fog/Mist OVC003 16 16 100% 76.2 0.0
27 09:55 N 17 3.22 Fog/Mist OVC003 15 15 100% 76.17 0.0
27 09:35 N 13 2.41 Fog/Mist OVC003 14 14 100% 76.17 0.0
27 09:15 N 17 6.44 Fog/Mist OVC003 14 14 100% 76.17 0.0
27 08:55 N 13 2.82 Fog/Mist OVC003 14 14 100% 76.17 0.0
27 08:35 N 13 0.40 Overcast OVC002 0 0 0% 76.17 0.0
27 08:15 N 9 0.40 Fog OVC002 14 14 100% 76.15 0.0
27 07:55 N 13 0.40 Fog OVC002 14 14 100% 76.15 0.0
27 07:15 NW 9 0.40 Fog OVC002 14 14 100% 76.12 0.0
27 06:55 N 11 0.80 Fog OVC002 14 14 100% 76.12 0.0
27 06:35 N 9 0.80 Fog/Mist OVC002 0 0 0% 76.1 0.0
27 06:15 N 13 1.61 Fog/Mist OVC002 14 14 100% 76.1 0.0
27 05:55 N 11 1.21 Fog/Mist OVC002 14 14 100% 76.1 0.0
27 05:35 NW 13 2.01 Fog/Mist OVC002 14 14 100% 76.1 0.0
27 05:15 NW 11 2.01 Fog/Mist OVC002 14 14 100% 76.1 0.0
27 04:55 Calm 1.61 Fog/Mist OVC002 14 14 100% 76.1 0.0
27 04:35 N 7 3.22 Fog/Mist OVC003 14 14 100% 76.1 0.0
27 04:15 N 9 4.83 Fog/Mist OVC003 14 14 100% 76.12 0.0
27 03:55 N 9 8.05 Fog/Mist OVC004 15 15 100% 76.12 0.0
27 03:35 Calm 8.05 Fog/Mist OVC005 13 13 100% 76.12 0.0
27 03:15 Calm 8.05 Fog/Mist FEW003 OVC007 13 13 100% 76.12 0.0
27 02:55 Calm 4.02 Fog/Mist SCT002 BKN008 BKN011 13 13 100% 76.15 0.0
27 02:35 Calm 1.21 Fog/Mist OVC002 14 14 100% 76.12 0.0
27 02:15 Calm 4.83 Fog/Mist OVC002 14 14 100% 76.12 0.0
27 01:55 Calm 6.44 Fog/Mist OVC003 14 14 100% 76.12 0.0
27 01:35 Calm 8.05 Fog/Mist OVC003 14 14 100% 76.12 0.0
27 01:15 Calm 8.05 Fog/Mist OVC003 14 14 100% 76.12 0.0
27 00:55 Calm 8.05 Fog/Mist OVC003 14 14 100% 76.12 0.0
27 00:35 Calm 6.44 Fog/Mist OVC003 14 14 100% 76.15 0.0
27 00:15 Calm 4.83 Fog/Mist OVC003 14 14 100% 76.12 0.0
26 23:55 SE 6 3.22 Fog/Mist OVC004 14 14 100% 76.15 0.0
26 23:35 SE 7 4.02 Fog/Mist BKN002 14 14 100% 76.15 0.0
26 23:15 S 7 4.83 Fog/Mist FEW003 14 14 100% 76.15 0.0
26 22:55 S 7 8.05 Fog/Mist CLR 15 15 100% 76.15 0.0
26 22:15 NW 11 8.05 Fair CLR 0 0 0% 76.15 0.0
26 21:55 W 11 8.05 Fog/Mist CLR 15 15 100% 76.15 0.0
26 21:35 W 7 8.05 Mostly Cloudy BKN003 0 0 0% 76.15 0.0
26 21:15 NW 15 8.05 Fog/Mist OVC004 15 15 100% 76.15 0.0
26 20:55 NW 17 G 28 9.66 Fog/Mist OVC005 16 16 100% 76.12 0.0
26 20:35 NW 19 G 28 9.66 Fog/Mist OVC007 16 16 100% 76.12 0.0
26 20:15 NW 17 9.66 Mostly Cloudy BKN007 0 0 0% 76.1 0.0
26 19:55 NW 20 8.05 Fog/Mist SCT008 16 16 100% 76.1 0.0
26 19:35 NW 19 8.05 Fog/Mist CLR 16 16 100% 76.1 0.0
26 19:15 NW 24 9.66 Fog/Mist CLR 17 16 94% 76.1 0.0
26 18:55 NW 24 9.66 Fog/Mist CLR 17 16 94% 76.1 0.0
26 18:35 NW 28 11.27 Fair CLR 18 16 88% 76.07 0.0
26 18:15 NW 24 11.27 Fair CLR 19 16 83% 76.07 0.0
26 17:55 N 20 G 37 12.87 Fair CLR 0 0 0% 76.1 0.0
26 17:35 NW 28 G 37 12.87 Fair CLR 19 15 78% 76.07 0.0
26 17:15 N 26 G 41 12.87 Fair CLR 19 16 83% 76.07 0.0
26 16:55 NW 35 G 48 12.87 Fair and Breezy CLR 19 15 78% 76.1 0.0
26 16:35 N 33 14.48 Fair and Breezy CLR 20 15 73% 76.1 0.0
26 16:15 NW 33 G 48 12.87 Fair and Breezy CLR 19 15 78% 76.1 0.0
26 15:55 N 30 12.87 Fair CLR 19 15 78% 76.12 0.0
26 15:35 NW 30 12.87 Fair CLR 0 0 0% 76.15 0.0
26 15:15 NW 30 14.48 Fair CLR 18 14 78% 76.17 0.0
26 14:55 N 19 14.48 Fair CLR 18 15 83% 76.2 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)