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.
01 09:35 W 11 4.02 Fog/Mist CLR 13 13 100% 76.12 0.0
01 09:15 W 11 4.02 Fog/Mist CLR 13 13 100% 76.12 0.0
01 08:55 NW 9 4.02 Fog/Mist FEW008 13 13 100% 76.12 0.0
01 08:35 NW 9 4.02 Fog/Mist BKN008 13 13 100% 76.1 0.0
01 08:15 W 9 3.22 Fog/Mist BKN008 12 12 100% 76.1 0.0
01 07:55 Calm 4.02 Fog/Mist BKN008 12 12 100% 76.1 0.0
01 07:35 Calm 4.83 Fog/Mist BKN008 11 11 100% 76.1 0.0
01 07:15 Calm 4.83 Fog/Mist SCT008 10 10 100% 76.1 0.0
01 06:55 Calm 6.44 A Few Clouds FEW007 0 0 0% 76.1 0.0
01 06:35 Calm 4.83 Fog/Mist SCT008 8 8 100% 76.07 0.0
01 06:15 Calm 4.83 Fog/Mist SCT007 7 7 100% 76.07 0.0
01 05:55 Calm 4.83 Fog/Mist BKN007 7 7 100% 76.05 0.0
01 05:35 Calm 6.44 Fog/Mist BKN007 7 7 100% 76.05 0.0
01 05:15 Calm 8.05 Fog/Mist BKN008 7 7 100% 76.05 0.0
01 04:55 Calm 8.05 Fog/Mist SCT008 0 0 0% 76.05 0.0
01 04:35 Calm 8.05 Fog/Mist FEW008 7 7 100% 76.05 0.0
01 04:15 Calm 8.05 Fog/Mist CLR 7 7 100% 76.05 0.0
01 03:55 Calm 8.05 Fog/Mist CLR 8 8 100% 76.05 0.0
01 03:35 Calm 8.05 Fog/Mist CLR 8 8 100% 76.05 0.0
01 03:15 Calm 8.05 Fog/Mist CLR 7 7 100% 76.05 0.0
01 02:55 Calm 8.05 Fog/Mist CLR 7 7 100% 76.05 0.0
01 02:35 Calm 8.05 Fog/Mist CLR 8 8 100% 76.07 0.0
01 02:15 Calm 8.05 Fog/Mist CLR 7 7 100% 76.05 0.0
01 01:55 Calm 8.05 Fog/Mist CLR 8 8 100% 76.07 0.0
01 01:35 Calm 8.05 Fog/Mist CLR 7 7 100% 76.07 0.0
01 01:15 Calm 8.05 Fog/Mist CLR 8 8 100% 76.07 0.0
01 00:55 Calm 8.05 Fog/Mist CLR 7 7 100% 76.1 0.0
01 00:35 Calm 8.05 Fog/Mist CLR 8 8 100% 76.1 0.0
01 00:15 Calm 6.44 Fog/Mist CLR 9 9 100% 76.1 0.0
31 23:55 Calm 6.44 Fog/Mist CLR 8 8 100% 76.12 0.0
31 23:35 Calm 8.05 Fog/Mist CLR 8 8 100% 76.12 0.0
31 23:15 Calm 8.05 Fog/Mist CLR 9 9 100% 76.15 0.0
31 22:55 Calm 6.44 Fog/Mist CLR 9 9 100% 76.15 0.0
31 22:35 Calm 6.44 Fog/Mist CLR 9 9 100% 76.15 0.0
31 22:15 Calm 6.44 Fog/Mist CLR 10 10 100% 76.15 0.0
31 21:55 Calm 6.44 Fog/Mist CLR 10 10 100% 76.15 0.0
31 21:35 Calm 6.44 Fog/Mist CLR 11 11 100% 76.15 0.0
31 21:15 NE 6 6.44 Fog/Mist CLR 11 11 100% 76.15 0.0
31 20:55 N 6 6.44 Fog/Mist CLR 12 12 100% 76.15 0.0
31 20:35 N 7 4.83 Fog/Mist CLR 12 12 100% 76.15 0.0
31 19:55 NW 15 4.83 Fog/Mist CLR 12 12 100% 76.15 0.0
31 19:35 NW 19 4.83 Fog/Mist CLR 13 12 94% 76.15 0.0
31 19:15 NW 20 4.83 Fair CLR 0 0 0% 76.15 0.0
31 18:55 NW 17 4.83 Fog/Mist CLR 13 12 94% 76.15 0.0
31 18:35 NW 22 4.83 Fog/Mist CLR 14 12 88% 76.15 0.0
31 18:15 NW 20 4.83 Fog/Mist CLR 14 12 88% 76.17 0.0
31 17:55 NW 22 4.83 Fog/Mist CLR 14 12 88% 76.17 0.0
31 17:35 NW 22 4.83 Fog/Mist CLR 14 12 88% 76.2 0.0
31 17:15 NW 24 4.83 Fog/Mist CLR 14 12 88% 76.2 0.0
31 16:55 NW 22 4.83 Fog/Mist CLR 15 12 82% 76.23 0.0
31 16:35 NW 22 4.83 Fog/Mist CLR 14 12 88% 76.23 0.0
31 16:15 NW 26 4.83 Fog/Mist CLR 14 12 88% 76.23 0.0
31 15:55 NW 22 6.44 Fog/Mist CLR 15 13 88% 76.25 0.0
31 15:35 NW 24 4.83 Fog/Mist CLR 15 13 88% 76.25 0.0
31 15:15 NW 24 4.83 Fog/Mist CLR 15 13 88% 76.28 0.0
31 14:55 NW 26 4.83 Fog/Mist CLR 15 13 88% 76.28 0.0
31 14:35 NW 24 6.44 Fog/Mist CLR 14 12 88% 76.3 0.0
31 14:15 NW 22 6.44 Fair with Haze CLR 15 13 88% 76.3 0.0
31 13:55 NW 20 4.83 Fog/Mist CLR 14 12 88% 76.3 0.0
31 13:35 NW 22 4.83 Fog/Mist CLR 15 12 82% 76.3 0.0
31 13:15 NW 22 4.83 Fog/Mist CLR 15 13 88% 76.3 0.0
31 12:55 NW 22 4.83 Fog/Mist CLR 0 0 0% 76.33 0.0
31 12:35 NW 19 4.83 Fair CLR 0 0 0% 76.33 0.0
31 12:15 NW 19 4.83 Fog/Mist CLR 14 12 88% 76.33 0.0
31 11:55 NW 19 4.83 Fog/Mist CLR 14 12 88% 76.33 0.0
31 11:35 NW 15 4.83 Fog/Mist CLR 15 13 88% 76.33 0.0
31 11:15 NW 17 6.44 Fog/Mist CLR 14 12 88% 76.33 0.0
31 10:55 NW 19 6.44 Fog/Mist CLR 14 12 88% 76.33 0.0
31 10:35 NW 13 6.44 Fog/Mist CLR 14 12 88% 76.33 0.0
31 10:15 NW 17 4.83 Fair CLR 0 0 0% 76.33 0.0
31 09:55 NW 17 4.83 Fog/Mist CLR 13 12 94% 76.33 0.0
31 09:35 NW 19 6.44 Fog/Mist CLR 13 12 94% 76.33 0.0
31 09:15 NW 17 4.83 Fog/Mist CLR 13 12 94% 76.35 0.0
31 08:55 NW 15 4.83 Fog/Mist CLR 13 12 94% 76.35 0.0
31 08:35 NW 13 6.44 Fog/Mist CLR 13 12 94% 76.35 0.0
31 08:15 NW 11 6.44 Fog/Mist CLR 12 12 100% 76.35 0.0
31 07:55 N 7 4.83 Fog/Mist SCT013 12 12 100% 76.35 0.0
31 07:35 Calm 4.83 Fog/Mist SCT013 12 11 94% 76.35 0.0
31 07:15 Calm 4.83 Fog/Mist SCT012 11 11 100% 76.33 0.0
31 06:55 Calm 4.83 Fog/Mist BKN013 10 10 100% 76.33 0.0
31 06:35 Calm 4.83 Mostly Cloudy BKN013 0 0 0% 76.33 0.0
31 06:15 Calm 4.83 Mostly Cloudy BKN013 0 0 0% 76.33 0.0
31 05:55 E 6 4.83 Fog/Mist BKN012 10 10 100% 76.33 0.0
31 05:35 Calm 6.44 Fog/Mist OVC012 11 11 100% 76.33 0.0
31 05:15 NE 6 6.44 Fog/Mist OVC011 11 11 100% 76.33 0.0
31 04:55 Calm 6.44 Fog/Mist OVC011 11 11 100% 76.33 0.0
31 04:35 E 7 6.44 Fog/Mist OVC011 11 11 100% 76.33 0.0
31 04:15 E 6 6.44 Fog/Mist OVC011 11 11 100% 76.33 0.0
31 03:55 Calm 6.44 Fog/Mist OVC011 11 11 100% 76.35 0.0
31 03:35 Calm 6.44 Fog/Mist OVC011 11 11 100% 76.35 0.0
31 03:15 Calm 6.44 Fog/Mist OVC011 11 11 100% 76.35 0.0
31 02:55 Calm 6.44 Fog/Mist OVC011 11 11 100% 76.35 0.0
31 02:35 Calm 6.44 Fog/Mist OVC010 11 11 100% 76.35 0.0
31 02:15 Calm 6.44 Fog/Mist OVC010 11 11 100% 76.35 0.0
31 01:55 Calm 8.05 Fog/Mist OVC011 11 11 100% 76.35 0.0
31 01:35 Calm 8.05 Fog/Mist OVC011 10 10 100% 76.38 0.0
31 01:15 Calm 8.05 Fog/Mist OVC012 10 10 100% 76.38 0.0
31 00:55 Calm 8.05 Fog/Mist OVC013 9 9 100% 76.38 0.0
31 00:35 Calm 8.05 Fog/Mist OVC013 9 9 100% 76.4 0.0
31 00:15 Calm 8.05 Fog/Mist OVC013 9 9 100% 76.43 0.0
30 23:55 Calm 8.05 Fog/Mist OVC013 8 8 100% 76.43 0.0
30 23:35 Calm 8.05 Fog/Mist OVC013 8 8 100% 76.43 0.0
30 22:55 Calm 8.05 Fog/Mist SCT013 9 9 100% 76.45 0.0
30 22:35 Calm 8.05 Fog/Mist SCT013 9 9 100% 76.48 0.0
30 22:15 E 6 6.44 Fog/Mist SCT013 10 10 100% 76.48 0.0
30 21:55 Calm 6.44 Fog/Mist FEW013 11 11 100% 76.48 0.0
30 21:35 NW 15 8.05 Fog/Mist SCT013 11 11 100% 76.48 0.0
30 21:15 NW 15 8.05 Fog/Mist BKN013 11 11 100% 76.48 0.0
30 20:55 NW 17 4.83 Fog/Mist SCT013 12 11 94% 76.48 0.0
30 20:35 NW 19 G 28 4.83 Fog/Mist CLR 12 11 94% 76.48 0.0
30 20:15 NW 24 6.44 Fog/Mist CLR 12 11 94% 76.48 0.0
30 19:55 NW 24 6.44 Fog/Mist CLR 12 11 94% 76.48 0.0
30 19:35 N 24 G 33 6.44 Fog/Mist CLR 13 11 88% 76.48 0.0
30 19:15 N 22 6.44 Fair with Haze CLR 13 11 88% 76.48 0.0
30 18:55 N 22 G 35 6.44 Fair with Haze CLR 14 11 82% 76.48 0.0
30 18:35 N 24 G 37 6.44 Fair with Haze CLR 14 11 82% 76.5 0.0
30 18:15 NW 26 G 37 6.44 Fair with Haze CLR 14 11 82% 76.5 0.0
30 17:55 N 28 8.05 Partly Cloudy with Haze SCT013 14 11 82% 76.5 0.0
30 17:35 NW 26 8.05 Partly Cloudy with Haze SCT013 14 12 88% 76.5 0.0
30 17:15 NW 24 G 33 6.44 Fair CLR 0 0 0% 76.5 0.0
30 16:55 N 24 6.44 Partly Cloudy with Haze SCT013 14 12 88% 76.53 0.0
30 16:35 NW 24 6.44 Mostly Cloudy with Haze BKN013 15 12 82% 76.53 0.0
30 16:15 NW 22 6.44 Mostly Cloudy with Haze BKN013 15 12 82% 76.56 0.0
30 15:55 NW 20 6.44 Partly Cloudy SCT013 0 0 0% 76.56 0.0
30 15:35 NW 24 6.44 Mostly Cloudy with Haze BKN013 15 12 82% 76.56 0.0
30 15:15 NW 22 8.05 Mostly Cloudy with Haze BKN013 15 12 82% 76.58 0.0
30 14:55 NW 22 8.05 Partly Cloudy with Haze SCT013 15 12 82% 76.58 0.0
30 14:35 NW 20 8.05 Partly Cloudy with Haze SCT013 15 12 82% 76.58 0.0
30 14:15 NW 20 8.05 Partly Cloudy with Haze SCT013 15 12 82% 76.61 0.0
30 13:55 NW 20 8.05 Mostly Cloudy with Haze BKN013 14 12 88% 76.61 0.0
30 13:35 NW 17 8.05 Overcast with Haze OVC013 15 12 82% 76.61 0.0
30 13:15 NW 15 G 24 8.05 Mostly Cloudy with Haze BKN013 15 12 82% 76.61 0.0
30 12:55 NW 17 8.05 Partly Cloudy with Haze SCT014 15 12 82% 76.61 0.0
30 12:35 NW 17 G 26 8.05 Mostly Cloudy with Haze BKN014 14 12 88% 76.61 0.0
30 12:15 NW 20 8.05 Overcast with Haze OVC014 14 12 88% 76.61 0.0
30 11:55 NW 17 G 26 8.05 Fog/Mist OVC014 14 12 88% 76.63 0.0
30 11:35 NW 17 8.05 Fog/Mist OVC014 14 11 82% 76.63 0.0
30 11:15 NW 15 9.66 Overcast with Haze BKN013 OVC017 14 11 82% 76.63 0.0
30 10:55 NW 20 11.27 Mostly Cloudy BKN015 14 12 88% 76.63 0.0
30 10:35 NW 17 9.66 Fog/Mist FEW008 SCT013 13 12 94% 76.63 0.0
30 10:15 NW 13 8.05 Fog/Mist FEW007 BKN013 13 12 94% 76.61 0.0
30 09:55 NW 13 8.05 Fog/Mist BKN013 13 12 94% 76.61 0.0
30 09:35 W 11 8.05 Fog/Mist OVC013 13 12 94% 76.61 0.0
30 09:15 W 7 6.44 Fog/Mist BKN013 12 12 100% 76.61 0.0
30 08:55 W 7 8.05 Fog/Mist OVC012 12 12 100% 76.58 0.0
30 08:35 W 7 6.44 Fog/Mist OVC012 12 12 100% 76.58 0.0
30 08:15 W 7 8.05 Fog/Mist BKN009 BKN013 12 12 100% 76.56 0.0
30 07:55 W 7 8.05 Fog/Mist BKN008 BKN013 12 12 100% 76.56 0.0
30 07:35 W 7 4.83 Fog/Mist BKN009 OVC013 12 12 100% 76.53 0.0
30 07:15 W 7 6.44 Fog/Mist OVC010 12 12 100% 76.53 0.0
30 06:55 W 7 6.44 Fog/Mist OVC008 12 12 100% 76.53 0.0
30 06:35 NW 9 4.83 Fog/Mist BKN006 OVC010 12 12 100% 76.53 0.0
30 06:15 Calm 4.83 Fog/Mist OVC009 12 12 100% 76.5 0.0
30 05:55 Calm 8.05 Fog/Mist OVC009 12 12 100% 76.5 0.0
30 05:35 Calm 8.05 Fog/Mist OVC009 12 12 100% 76.5 0.0
30 05:15 Calm 8.05 Fog/Mist OVC010 12 12 100% 76.5 0.0
30 04:55 Calm 8.05 Fog/Mist OVC011 12 12 100% 76.5 0.0
30 04:35 NW 6 8.05 Fog/Mist OVC011 12 12 100% 76.48 0.0
30 03:55 Calm 8.05 Fog/Mist OVC011 12 12 100% 76.48 0.0
30 03:35 Calm 8.05 Fog/Mist OVC011 12 12 100% 76.45 0.0
30 03:15 Calm 9.66 Fog/Mist OVC012 12 12 100% 76.48 0.0
30 02:55 Calm 9.66 Fog/Mist OVC012 12 12 100% 76.48 0.0
30 02:35 Calm 8.05 Fog/Mist OVC011 12 12 100% 76.48 0.0
30 02:15 NW 7 9.66 Fog/Mist OVC011 12 12 100% 76.48 0.0
30 01:55 Calm 9.66 Fog/Mist OVC011 12 12 100% 76.45 0.0
30 01:35 NW 11 9.66 Fog/Mist OVC011 12 12 100% 76.48 0.0
30 01:15 NW 7 9.66 Fog/Mist OVC010 12 12 100% 76.5 0.0
30 00:55 NW 11 11.27 Overcast OVC010 12 12 100% 76.5 0.0
30 00:35 NW 11 8.05 Fog/Mist OVC009 12 12 100% 76.5 0.0
30 00:15 NW 11 11.27 Overcast OVC009 12 12 100% 76.5 0.0
29 23:55 NW 15 12.87 Overcast OVC009 12 12 100% 76.53 0.0
29 23:35 NW 15 9.66 Fog/Mist OVC009 12 12 100% 76.53 0.0
29 23:15 N 9 9.66 Fog/Mist OVC008 12 12 100% 76.53 0.0
29 22:55 N 13 4.83 Fog/Mist OVC007 12 12 100% 76.53 0.0
29 22:35 N 15 6.44 Fog/Mist OVC007 12 12 100% 76.53 0.0
29 22:15 NW 17 9.66 Fog/Mist OVC009 12 12 100% 76.53 0.0
29 21:35 NW 15 8.05 Overcast OVC010 0 0 0% 76.5 0.0
29 21:15 N 11 G 22 9.66 Fog/Mist OVC009 12 12 100% 76.5 0.0
29 20:55 NW 17 6.44 Fog/Mist OVC008 12 12 100% 76.48 0.0
29 20:35 NW 13 4.02 Fog/Mist BKN008 OVC013 12 12 100% 76.48 0.0
29 20:15 NW 13 G 22 2.82 Fog/Mist SCT006 OVC013 12 12 100% 76.48 0.0
29 19:55 NW 15 9.66 Fog/Mist FEW006 BKN013 13 13 100% 76.48 0.0
29 19:35 N 13 0.80 Fog/Mist BKN007 BKN013 13 13 100% 76.48 0.0
29 19:15 NW 13 4.83 Overcast OVC012 0 0 0% 76.45 0.0
29 18:55 NW 15 9.66 Fog/Mist SCT012 BKN018 13 13 100% 76.45 0.0
29 18:35 NW 11 1.21 Fog/Mist BKN007 BKN013 13 13 100% 76.45 0.0
29 18:15 NW 9 4.02 Fog/Mist SCT009 BKN013 BKN019 13 13 100% 76.45 0.0
29 17:55 NW 15 14.48 Overcast FEW007 BKN015 OVC019 14 13 94% 76.45 0.0
29 17:35 NW 15 12.87 Mostly Cloudy FEW010 SCT014 BKN018 14 14 100% 76.45 0.0
29 16:55 W 11 14.48 Overcast SCT013 OVC022 15 14 94% 76.45 0.0
29 16:35 W 15 14.48 Overcast BKN013 OVC024 14 13 94% 76.45 0.0
29 16:15 W 13 14.48 Overcast FEW021 OVC025 15 14 94% 76.45 0.0
29 15:55 Vrbl 11 G 22 14.48 Overcast FEW015 OVC026 15 14 94% 76.45 0.0
29 15:35 NW 13 14.48 Overcast SCT015 BKN021 OVC028 15 14 94% 76.45 0.0
29 15:15 W 17 14.48 Overcast SCT013 BKN021 OVC028 15 14 94% 76.45 0.0
29 14:55 NW 17 14.48 Overcast FEW012 SCT016 OVC027 15 14 94% 76.45 0.0
29 14:35 NW 15 14.48 Overcast SCT015 OVC025 15 14 94% 76.45 0.0
29 14:15 NW 15 12.87 Overcast FEW009 BKN013 OVC023 15 14 94% 76.45 0.0
29 13:55 W 13 14.48 Overcast SCT014 OVC025 15 14 94% 76.45 0.0
29 13:35 W 15 12.87 Overcast FEW018 OVC026 15 14 94% 76.45 0.0
29 13:15 Vrbl 9 14.48 Mostly Cloudy FEW013 BKN018 BKN026 15 14 94% 76.45 0.0
29 12:55 NW 11 1.61 Fog/Mist SCT008 BKN013 BKN018 14 14 100% 76.45 0.0
29 12:35 W 15 11.27 Overcast FEW009 BKN015 OVC032 15 14 94% 76.43 0.0
29 12:15 W 13 12.87 Overcast SCT017 OVC033 0 0 0% 76.43 0.0
29 11:55 Vrbl 11 12.87 Overcast FEW012 SCT021 OVC033 15 14 94% 76.43 0.0
29 11:35 W 13 11.27 Mostly Cloudy BKN013 BKN022 BKN027 15 14 94% 76.4 0.0
29 11:15 W 11 8.05 Fog/Mist BKN014 BKN028 14 14 100% 76.4 0.0
29 10:55 SW 11 9.66 Fog/Mist OVC015 14 14 100% 76.4 0.0
29 10:35 W 11 9.66 Fog/Mist OVC013 14 14 100% 76.38 0.0
29 10:15 W 13 9.66 Fog/Mist BKN016 OVC023 14 13 94% 76.35 0.0
29 09:55 W 11 8.05 Fog/Mist OVC020 14 14 100% 76.35 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)