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.
15 10:55 N 24 9.66 Fog/Mist FEW013 14 12 88% 76.33 0.0
15 10:35 N 22 G 33 8.05 Fog/Mist FEW013 14 12 88% 76.33 0.0
15 10:15 N 24 G 33 6.44 Fog/Mist CLR 14 12 88% 76.33 0.0
15 09:55 NW 28 8.05 Fog/Mist CLR 14 12 88% 76.33 0.0
15 09:35 N 22 6.44 Fog/Mist CLR 13 12 94% 76.33 0.0
15 09:15 N 22 6.44 Fog/Mist CLR 13 12 94% 76.33 0.0
15 08:55 N 20 6.44 Fog/Mist CLR 13 12 94% 76.3 0.0
15 08:35 N 19 6.44 Fog/Mist CLR 12 12 100% 76.3 0.0
15 08:15 N 17 4.83 Fog/Mist CLR 12 12 100% 76.3 0.0
15 07:55 Calm 4.83 Fog/Mist FEW009 11 11 100% 76.3 0.0
15 07:35 Calm 6.44 Fog/Mist BKN009 10 10 100% 76.28 0.0
15 06:55 Calm 8.05 Fog/Mist BKN009 9 9 100% 76.25 0.0
15 06:35 Calm 6.44 Fog/Mist BKN009 8 8 100% 76.25 0.0
15 06:15 Calm 6.44 Fog/Mist BKN009 8 8 100% 76.23 0.0
15 05:55 Calm 9.66 Fog/Mist OVC009 8 8 100% 76.2 0.0
15 05:35 NE 6 8.05 Fog/Mist OVC010 9 9 100% 76.2 0.0
15 05:15 Calm 8.05 Fog/Mist BKN010 BKN016 8 8 100% 76.2 0.0
15 04:35 Calm 8.05 Fog/Mist OVC012 9 9 100% 76.2 0.0
15 04:15 Calm 8.05 Fog/Mist OVC012 9 9 100% 76.2 0.0
15 03:55 Calm 8.05 Fog/Mist OVC012 9 9 100% 76.2 0.0
15 03:35 Calm 6.44 Fog/Mist OVC014 8 8 100% 76.2 0.0
15 03:15 Calm 8.05 Fog/Mist BKN014 8 8 100% 76.2 0.0
15 02:35 Calm 8.05 Fog/Mist SCT015 8 8 100% 76.23 0.0
15 02:15 Calm 8.05 Fog/Mist SCT015 8 8 100% 76.25 0.0
15 01:55 Calm 8.05 Fog/Mist SCT014 8 8 100% 76.25 0.0
15 01:35 Calm 8.05 Fog/Mist SCT015 8 8 100% 76.25 0.0
15 01:15 E 6 8.05 Fog/Mist CLR 8 8 100% 76.25 0.0
15 00:55 E 7 8.05 Fair CLR 0 0 0% 76.28 0.0
15 00:35 Calm 6.44 Fog/Mist CLR 9 9 100% 76.3 0.0
15 00:15 Calm 6.44 Fog/Mist CLR 9 9 100% 76.28 0.0
14 23:55 Calm 6.44 Fog/Mist CLR 9 9 100% 76.28 0.0
14 23:35 Calm 6.44 Fog/Mist CLR 10 10 100% 76.3 0.0
14 23:15 Calm 6.44 Fog/Mist CLR 11 11 100% 76.3 0.0
14 22:55 Calm 6.44 Fog/Mist FEW013 11 11 100% 76.33 0.0
14 22:35 Calm 6.44 Fog/Mist SCT013 11 11 100% 76.33 0.0
14 22:15 NW 9 6.44 Fog/Mist SCT013 11 11 100% 76.33 0.0
14 21:55 NW 15 6.44 Mostly Cloudy BKN013 0 0 0% 76.33 0.0
14 21:35 NW 15 6.44 Fog/Mist BKN013 12 12 100% 76.3 0.0
14 21:15 NW 7 G 22 8.05 Fog/Mist BKN013 12 12 100% 76.3 0.0
14 20:55 NW 13 8.05 Fog/Mist BKN013 12 12 100% 76.3 0.0
14 20:35 NW 9 8.05 Fog/Mist OVC014 12 12 100% 76.3 0.0
14 20:15 NW 9 G 20 6.44 Fog/Mist BKN014 12 12 100% 76.3 0.0
14 19:55 NW 19 6.44 Fog/Mist SCT014 12 12 100% 76.33 0.0
14 19:35 NW 17 8.05 Fog/Mist FEW014 13 12 94% 76.33 0.0
14 19:15 NW 15 8.05 Fog/Mist SCT014 13 12 94% 76.33 0.0
14 18:55 NW 19 8.05 Fog/Mist FEW014 13 12 94% 76.33 0.0
14 18:35 NW 20 G 30 9.66 Partly Cloudy SCT014 0 0 0% 76.35 0.0
14 18:15 NW 20 8.05 Fog/Mist SCT013 14 12 88% 76.35 0.0
14 17:55 NW 20 9.66 Fog/Mist BKN013 14 12 88% 76.35 0.0
14 17:35 NW 19 8.05 Fog/Mist BKN013 14 12 88% 76.35 0.0
14 17:15 NW 17 9.66 Fog/Mist OVC013 14 12 88% 76.38 0.0
14 16:55 NW 17 G 28 9.66 Fog/Mist OVC014 14 12 88% 76.38 0.0
14 16:35 NW 17 G 28 9.66 Overcast with Haze OVC014 15 13 88% 76.38 0.0
14 16:15 NW 20 8.05 Mostly Cloudy with Haze BKN013 15 12 82% 76.38 0.0
14 15:55 NW 19 8.05 Fog/Mist BKN013 15 13 88% 76.4 0.0
14 15:35 NW 22 9.66 Fog/Mist BKN013 15 13 88% 76.4 0.0
14 15:15 NW 20 G 31 11.27 Mostly Cloudy BKN013 16 13 83% 76.4 0.0
14 14:55 NW 17 9.66 Mostly Cloudy with Haze BKN013 15 13 88% 76.43 0.0
14 14:35 NW 22 9.66 Partly Cloudy with Haze SCT013 15 13 88% 76.43 0.0
14 14:15 NW 24 8.05 A Few Clouds with Haze FEW013 15 12 82% 76.43 0.0
14 13:55 NW 22 9.66 Partly Cloudy with Haze SCT013 15 12 82% 76.43 0.0
14 13:35 NW 22 9.66 A Few Clouds with Haze FEW013 15 13 88% 76.45 0.0
14 13:15 NW 22 9.66 A Few Clouds with Haze FEW013 15 13 88% 76.45 0.0
14 12:55 NW 19 G 30 9.66 A Few Clouds with Haze FEW013 15 12 82% 76.45 0.0
14 12:35 NW 22 9.66 Fair with Haze CLR 15 12 82% 76.45 0.0
14 12:15 NW 20 8.05 Fair with Haze CLR 14 12 88% 76.45 0.0
14 11:55 NW 19 9.66 Fair with Haze CLR 15 12 82% 76.45 0.0
14 11:35 NW 17 9.66 Fair with Haze CLR 15 12 82% 76.43 0.0
14 11:15 NW 15 9.66 Fair with Haze CLR 14 12 88% 76.43 0.0
14 10:55 NW 15 8.05 Fog/Mist CLR 14 12 88% 76.43 0.0
14 10:35 W 11 6.44 Fog/Mist CLR 14 12 88% 76.43 0.0
14 10:15 W 13 6.44 Fog/Mist CLR 14 12 88% 76.43 0.0
14 09:55 NW 15 8.05 Fog/Mist CLR 14 12 88% 76.43 0.0
14 09:35 NW 11 8.05 Fog/Mist CLR 14 12 88% 76.4 0.0
14 09:15 NW 11 8.05 Fog/Mist CLR 13 12 94% 76.4 0.0
14 08:55 NW 11 8.05 Fog/Mist SCT013 13 12 94% 76.4 0.0
14 08:35 N 6 8.05 Fog/Mist BKN013 13 12 94% 76.4 0.0
14 08:15 Calm 8.05 Fog/Mist BKN012 12 12 100% 76.4 0.0
14 07:55 Calm 6.44 Fog/Mist OVC011 12 12 100% 76.38 0.0
14 07:35 Calm 6.44 Fog/Mist BKN009 OVC013 11 11 100% 76.38 0.0
14 07:15 Calm 6.44 Fog/Mist OVC009 11 11 100% 76.35 0.0
14 06:55 Calm 6.44 Fog/Mist OVC009 11 11 100% 76.35 0.0
14 06:35 NE 6 8.05 Fog/Mist OVC009 10 10 100% 76.35 0.0
14 06:15 NE 7 6.44 Fog/Mist OVC009 10 10 100% 9 76.33 0.0
14 05:55 E 7 8.05 Fog/Mist OVC009 9 9 100% 8 76.33 0.0
14 05:35 Calm 9.66 Fog/Mist BKN010 9 9 100% 76.3 0.0
14 05:15 Calm 9.66 Fog/Mist OVC010 10 10 100% 76.33 0.0
14 04:55 Calm 9.66 Fog/Mist OVC009 10 10 100% 76.33 0.0
14 04:15 Vrbl 6 11.27 Overcast OVC009 9 9 100% 76.33 0.0
14 03:55 E 6 11.27 Overcast OVC008 9 9 100% 76.33 0.0
14 03:35 Calm 11.27 Overcast OVC008 9 9 100% 76.33 0.0
14 03:15 Calm 11.27 Overcast OVC008 9 9 100% 76.33 0.0
14 02:55 Calm 11.27 Overcast OVC008 9 9 100% 76.33 0.0
14 02:15 Calm 9.66 Fog/Mist OVC008 8 8 100% 76.33 0.0
14 01:55 Calm 11.27 Overcast OVC009 9 9 100% 76.35 0.0
14 01:35 Vrbl 7 8.05 Fog/Mist SCT008 10 10 100% 9 76.35 0.0
14 01:15 Vrbl 7 8.05 Fog/Mist SCT010 10 10 100% 9 76.38 0.0
14 00:55 Calm 11.27 Mostly Cloudy BKN010 9 9 100% 76.38 0.0
14 00:35 NE 7 11.27 A Few Clouds FEW010 FEW015 0 0 0% 76.4 0.0
14 00:15 N 7 9.66 Fog/Mist FEW014 FEW030 10 10 100% 9 76.4 0.0
13 23:55 N 11 8.05 Fog/Mist SCT014 11 11 100% 76.4 0.0
13 23:35 N 9 8.05 Fog/Mist SCT015 11 11 100% 76.4 0.0
13 23:15 Vrbl 6 9.66 Fog/Mist SCT014 11 11 100% 76.43 0.0
13 22:55 N 9 8.05 Fog/Mist FEW015 FEW022 11 11 100% 76.43 0.0
13 22:35 N 13 8.05 Fog/Mist FEW015 SCT022 12 11 94% 76.43 0.0
13 22:15 N 17 8.05 Fog/Mist FEW016 12 11 94% 76.45 0.0
13 21:55 N 15 9.66 Fog/Mist FEW016 12 11 94% 76.45 0.0
13 21:35 N 15 9.66 Fog/Mist SCT016 12 11 94% 76.45 0.0
13 21:15 N 15 G 26 11.27 Mostly Cloudy BKN016 12 11 94% 76.45 0.0
13 20:55 N 13 9.66 Fog/Mist SCT015 12 11 94% 76.45 0.0
13 20:35 NW 22 9.66 Fog/Mist CLR 12 11 94% 76.45 0.0
13 20:15 NW 24 8.05 Fog/Mist CLR 12 11 94% 76.45 0.0
13 19:55 N 19 9.66 Fog/Mist CLR 13 11 88% 76.48 0.0
13 19:35 NW 20 G 31 9.66 Fair CLR 0 0 0% 76.48 0.0
13 19:15 NW 24 11.27 A Few Clouds FEW019 14 12 88% 76.48 0.0
13 18:55 NW 24 9.66 Fog/Mist FEW018 14 12 88% 76.48 0.0
13 18:35 NW 19 G 30 11.27 Fair CLR 15 12 82% 76.5 0.0
13 18:15 NW 26 11.27 Fair CLR 15 12 82% 76.5 0.0
13 17:55 N 26 11.27 Fair CLR 15 12 82% 76.53 0.0
13 17:35 NW 30 G 43 11.27 Fair CLR 0 0 0% 76.53 0.0
13 17:15 NW 30 G 39 11.27 Fair CLR 15 12 82% 76.53 0.0
13 16:55 NW 31 G 46 14.48 Fair CLR 15 12 82% 76.53 0.0
13 16:35 NW 28 G 37 14.48 Fair CLR 16 12 77% 76.56 0.0
13 16:15 NW 24 G 37 12.87 Fair CLR 15 12 82% 76.56 0.0
13 15:55 NW 26 12.87 Fair CLR 0 0 0% 76.58 0.0
13 15:35 NW 28 12.87 Fair CLR 16 12 77% 76.58 0.0
13 15:15 NW 24 12.87 Fair CLR 16 13 83% 76.61 0.0
13 14:55 NW 20 12.87 Fair CLR 16 13 83% 76.61 0.0
13 14:35 NW 20 12.87 Fair CLR 16 13 83% 76.61 0.0
13 14:15 NW 24 12.87 Fair CLR 0 0 0% 76.63 0.0
13 13:55 NW 26 9.66 Fair with Haze CLR 16 13 83% 76.63 0.0
13 13:35 NW 20 G 35 11.27 Fair CLR 16 13 83% 76.63 0.0
13 13:15 NW 22 11.27 A Few Clouds FEW017 16 13 83% 76.66 0.0
13 12:55 NW 17 11.27 Mostly Cloudy BKN017 16 13 83% 76.66 0.0
13 12:35 NW 19 G 30 12.87 Partly Cloudy SCT017 16 13 83% 76.66 0.0
13 12:15 NW 30 G 41 14.48 Fair CLR 16 12 77% 76.66 0.0
13 11:55 NW 22 12.87 A Few Clouds FEW014 15 12 82% 76.66 0.0
13 11:35 NW 20 G 30 12.87 Partly Cloudy SCT014 15 13 88% 76.66 0.0
13 11:15 NW 22 9.66 Fog/Mist BKN014 15 13 88% 76.66 0.0
13 10:55 NW 19 11.27 Overcast OVC013 15 13 88% 76.66 0.0
13 10:35 NW 17 12.87 Overcast OVC013 15 13 88% 76.66 0.0
13 10:15 NW 19 11.27 Overcast OVC013 14 13 94% 76.63 0.0
13 09:55 NW 17 12.87 Overcast OVC013 14 13 94% 76.63 0.0
13 09:35 NW 20 12.87 Overcast OVC013 14 13 94% 76.61 0.0
13 09:15 NW 17 G 28 11.27 Overcast OVC013 14 13 94% 76.61 0.0
13 08:55 NW 22 11.27 Overcast OVC012 13 13 100% 76.58 0.0
13 08:35 NW 20 G 31 11.27 Mostly Cloudy BKN012 13 13 100% 76.56 0.0
13 08:15 NW 17 9.66 Fog/Mist BKN009 BKN013 13 13 100% 76.56 0.0
13 07:55 NW 17 8.05 Fog/Mist OVC009 13 13 100% 76.53 0.0
13 07:35 NW 15 9.66 Overcast OVC007 0 0 0% 76.53 0.0
13 07:15 NW 13 9.66 Fog/Mist OVC007 13 13 100% 76.5 0.0
13 06:55 NW 17 9.66 Fog/Mist OVC005 12 12 100% 76.5 0.0
13 06:35 NW 15 9.66 Fog/Mist OVC004 12 12 100% 76.5 0.0
13 06:15 NW 20 4.83 Fog/Mist OVC004 12 12 100% 76.48 0.0
13 05:55 NW 17 11.27 Overcast OVC007 13 13 100% 76.45 0.0
13 05:35 Calm 14.48 Overcast OVC009 0 0 0% 76.45 0.0
13 05:15 Calm 14.48 Overcast OVC009 13 13 100% 76.45 0.0
13 04:55 Calm 11.27 Overcast OVC010 13 13 100% 76.45 0.0
13 04:35 Calm 12.87 Overcast BKN009 BKN013 OVC023 13 13 100% 76.45 0.0
13 04:15 Calm 16.09 Overcast OVC009 13 13 100% 76.43 0.0
13 03:55 NW 9 14.48 Overcast BKN007 OVC011 13 13 100% 76.43 0.0
13 03:35 NW 11 G 28 6.44 Fog/Mist OVC005 13 13 100% 76.43 0.0
13 03:15 NW 19 11.27 Overcast OVC005 13 13 100% 76.43 0.0
13 02:55 NW 20 14.48 Overcast OVC007 13 13 100% 76.43 0.0
13 02:35 NW 9 G 20 14.48 Overcast OVC009 13 13 100% 76.43 0.0
13 01:55 Calm 11.27 Overcast OVC010 13 13 100% 76.4 0.0
13 01:35 Calm 12.87 Overcast OVC009 13 13 100% 76.4 0.0
13 01:15 Calm 9.66 Fog/Mist OVC009 13 13 100% 76.4 0.0
13 00:55 S 7 9.66 Fog/Mist OVC009 13 13 100% 76.4 0.0
13 00:35 Calm 11.27 Overcast OVC009 13 13 100% 76.38 0.0
13 00:15 Calm 6.44 Fog/Mist OVC009 13 13 100% 76.38 0.0
12 23:55 Calm 9.66 Fog/Mist OVC010 13 13 100% 76.38 0.0
12 23:35 Calm 11.27 Overcast OVC010 13 13 100% 76.35 0.0
12 23:15 W 7 11.27 Overcast OVC010 13 13 100% 76.35 0.0
12 22:55 NW 11 14.48 Overcast OVC010 13 13 100% 76.35 0.0
12 22:35 NW 9 14.48 Overcast OVC009 13 13 100% 76.33 0.0
12 22:15 NW 9 12.87 Overcast OVC008 13 13 100% 76.3 0.0
12 21:55 NW 17 11.27 Overcast OVC008 13 13 100% 76.28 0.0
12 21:35 NW 19 12.87 Overcast OVC006 13 13 100% 76.25 0.0
12 21:15 NW 17 12.87 Overcast OVC006 13 13 100% 76.25 0.0
12 20:55 NW 20 G 30 12.87 Overcast OVC008 13 13 100% 76.25 0.0
12 20:35 NW 22 14.48 Overcast BKN008 OVC013 13 13 100% 76.23 0.0
12 20:15 NW 24 11.27 Overcast OVC011 13 13 100% 76.23 0.0
12 19:55 NW 26 11.27 Overcast OVC012 13 13 100% 76.2 0.0
12 19:35 NW 20 11.27 Overcast OVC012 13 13 100% 76.2 0.0
12 19:15 NW 20 11.27 Overcast OVC011 13 13 100% 76.17 0.0
12 18:55 NW 11 11.27 Overcast OVC012 0 0 0% 76.17 0.0
12 18:35 NW 9 11.27 Overcast OVC012 13 13 100% 76.17 0.0
12 18:15 NW 17 11.27 Overcast OVC013 14 13 94% 76.17 0.0
12 17:55 NW 15 11.27 Mostly Cloudy BKN013 14 13 94% 76.17 0.0
12 17:35 NW 15 12.87 Mostly Cloudy BKN013 14 13 94% 76.17 0.0
12 17:15 NW 15 14.48 Overcast OVC013 14 12 88% 76.15 0.0
12 16:55 NW 17 11.27 Overcast OVC013 14 13 94% 76.17 0.0
12 16:35 NW 19 12.87 Overcast OVC013 13 12 94% 76.17 0.0
12 16:15 N 17 12.87 Overcast OVC013 14 12 88% 76.2 0.0
12 15:55 NW 19 12.87 Overcast OVC013 13 12 94% 76.2 0.0
12 15:15 NW 19 11.27 Mostly Cloudy SCT009 BKN013 13 12 94% 76.23 0.0
12 14:55 NW 17 9.66 Fog/Mist SCT009 BKN013 13 13 100% 76.2 0.0
12 14:35 NW 19 11.27 Mostly Cloudy SCT008 BKN013 13 13 100% 76.2 0.0
12 14:15 NW 20 11.27 Mostly Cloudy SCT008 BKN013 13 13 100% 76.2 0.0
12 13:55 W 13 14.48 Mostly Cloudy FEW008 BKN013 14 13 94% 76.2 0.0
12 13:35 NW 13 14.48 Mostly Cloudy BKN012 14 13 94% 76.2 0.0
12 13:15 NW 17 14.48 Partly Cloudy SCT012 14 13 94% 76.2 0.0
12 12:55 NW 13 14.48 Partly Cloudy SCT012 14 13 94% 76.23 0.0
12 12:35 N 15 16.09 Partly Cloudy SCT012 14 13 94% 76.23 0.0
12 12:15 NW 11 14.48 Mostly Cloudy BKN012 13 13 100% 76.25 0.0
12 11:55 Vrbl 9 14.48 Partly Cloudy SCT012 13 13 100% 76.25 0.0
12 11:35 NW 11 11.27 Mostly Cloudy SCT007 BKN013 0 0 0% 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)