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.
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
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
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)