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.
03 20:55 NW 11 16.09 Fair CLR 14 -2 33% 76.45 0.0
03 20:35 NW 13 16.09 Fair CLR 15 -2 31% 76.43 0.0
03 20:15 NW 13 16.09 Fair CLR 15 -2 31% 76.43 0.0
03 19:55 NW 13 16.09 Fair CLR 15 -1 34% 76.4 0.0
03 19:35 NW 17 16.09 Fair CLR 15 -1 34% 76.38 0.0
03 19:15 N 13 16.09 Fair CLR 16 -1 31% 76.38 0.0
03 18:55 N 20 16.09 Fair CLR 16 -1 31% 76.38 0.0
03 18:35 N 19 G 30 16.09 Fair CLR 17 -1 30% 76.38 0.0
03 18:15 NW 22 14.48 Fair CLR 17 0 32% 76.4 0.0
03 17:55 NW 22 G 31 16.09 Fair CLR 17 1 34% 76.38 0.0
03 17:35 N 24 G 33 16.09 Fair CLR 17 1 34% 76.38 0.0
03 17:15 NW 26 14.48 Fair CLR 17 3 39% 76.38 0.0
03 16:55 N 28 16.09 Fair CLR 17 6 49% 76.38 0.0
03 16:35 N 28 G 37 16.09 Fair CLR 17 9 60% 76.38 0.0
03 16:15 N 30 14.48 Fair CLR 17 10 64% 76.38 0.0
03 15:55 N 26 16.09 Fair CLR 18 10 60% 76.4 0.0
03 15:35 NW 28 16.09 Fair CLR 18 8 52% 76.4 0.0
03 15:15 NW 30 16.09 Fair CLR 18 6 46% 76.4 0.0
03 14:55 NW 24 16.09 Fair CLR 18 4 40% 76.43 0.0
03 14:35 NW 24 16.09 Fair CLR 18 3 37% 76.43 0.0
03 14:15 NW 24 16.09 Fair CLR 18 7 49% 76.45 0.0
03 13:55 NW 28 16.09 Fair CLR 18 7 49% 76.45 0.0
03 13:35 NW 19 G 31 16.09 Fair CLR 19 5 40% 76.45 0.0
03 13:15 NE 15 G 24 16.09 Fair CLR 21 0 25% 76.5 0.0
03 12:55 NE 20 16.09 Fair CLR 21 1 27% 76.5 0.0
03 12:35 NE 22 G 33 16.09 Fair CLR 20 0 26% 76.53 0.0
03 12:15 E 17 G 33 14.48 Fair CLR 20 0 26% 76.5 0.0
03 11:55 E 19 G 31 16.09 Fair CLR 19 0 28% 76.53 0.0
03 11:35 E 22 G 37 16.09 Fair CLR 19 0 28% 76.5 0.0
03 11:15 NE 19 G 39 16.09 Fair CLR 18 -1 28% 76.5 0.0
03 10:55 E 22 16.09 Fair CLR 18 -1 28% 76.53 0.0
03 10:35 NE 24 G 37 16.09 Fair CLR 17 -1 30% 76.5 0.0
03 10:15 NE 19 G 35 16.09 Fair CLR 17 1 34% 76.5 0.0
03 09:55 NE 15 16.09 Fair CLR 17 2 37% 76.5 0.0
03 09:35 NE 13 G 22 16.09 Fair CLR 16 1 36% 76.53 0.0
03 09:15 N 13 16.09 Fair CLR 16 1 36% 76.53 0.0
03 08:55 N 24 16.09 Fair CLR 15 0 36% 76.5 0.0
03 08:35 N 17 G 37 16.09 Fair CLR 0 0 0% 76.5 0.0
03 08:15 N 13 G 35 14.48 Fair CLR 14 -1 36% 76.48 0.0
03 07:55 N 19 G 31 11.27 Fair CLR 12 6 67% 76.48 0.0
03 07:35 NW 19 12.87 Fair CLR 12 6 67% 76.48 0.0
03 07:15 NW 17 9.66 Fog/Mist CLR 10 9 94% 8 76.45 0.0
03 06:55 N 19 8.05 Fog/Mist CLR 10 9 94% 8 76.45 0.0
03 06:35 N 17 8.05 Fog/Mist CLR 10 9 94% 8 76.45 0.0
03 06:15 N 15 8.05 Fog/Mist CLR 10 9 94% 8 76.45 0.0
03 05:55 NW 15 8.05 Fog/Mist CLR 10 10 100% 8 76.45 0.0
03 05:35 NW 19 6.44 Fog/Mist CLR 10 10 100% 8 76.45 0.0
03 05:15 N 19 9.66 Fog/Mist CLR 10 10 100% 8 76.43 0.0
03 04:55 N 13 9.66 Fog/Mist CLR 9 9 100% 7 76.45 0.0
03 01:15 Calm 12.87 A Few Clouds FEW003 7 7 100% 76.53 0.0
02 23:15 N 9 9.66 Fog/Mist CLR 10 10 100% 9 76.53 0.0
02 22:55 N 13 9.66 Fog/Mist CLR 10 10 100% 8 76.53 0.0
02 22:35 N 13 9.66 Fog/Mist CLR 11 10 94% 76.53 0.0
02 22:15 N 17 9.66 Fog/Mist CLR 11 10 94% 76.56 0.0
02 21:55 N 17 G 28 11.27 Fair CLR 11 10 94% 76.53 0.0
02 21:35 N 22 11.27 Fair CLR 11 10 94% 76.53 0.0
02 21:15 N 22 G 35 11.27 Fair CLR 11 10 94% 76.5 0.0
02 20:55 N 24 12.87 Fair CLR 11 9 88% 76.5 0.0
02 20:35 N 28 G 41 11.27 Fair CLR 11 9 88% 76.5 0.0
02 20:15 N 30 12.87 Fair CLR 11 9 88% 76.48 0.0
02 19:55 N 26 G 39 12.87 Fair CLR 11 9 88% 76.48 0.0
02 19:35 N 31 G 41 11.27 Fair CLR 11 9 88% 76.48 0.0
02 19:15 N 30 G 43 11.27 Fair CLR 12 9 82% 76.48 0.0
02 18:55 N 33 G 50 12.87 Fair and Breezy CLR 12 8 77% 76.48 0.0
02 18:35 N 31 11.27 Fair CLR 12 9 82% 76.48 0.0
02 18:15 N 24 G 43 12.87 Fair CLR 13 8 72% 76.48 0.0
02 17:55 N 31 G 41 12.87 Fair CLR 13 8 72% 76.48 0.0
02 17:35 N 31 G 46 12.87 Fair CLR 13 8 72% 76.48 0.0
02 17:15 N 30 12.87 Fair CLR 14 8 67% 76.48 0.0
02 16:55 N 35 14.48 Fair and Breezy CLR 14 9 72% 76.45 0.0
02 16:35 N 28 G 39 12.87 Fair CLR 14 10 77% 76.48 0.0
02 16:15 N 26 G 41 14.48 Fair CLR 0 0 0% 76.48 0.0
02 15:55 N 30 14.48 Fair CLR 14 9 72% 76.48 0.0
02 15:35 NW 28 G 39 12.87 Fair CLR 0 0 0% 76.48 0.0
02 15:15 NW 33 14.48 Fair and Breezy CLR 14 9 72% 76.48 0.0
02 14:55 NW 33 14.48 Fair and Breezy CLR 14 9 72% 76.5 0.0
02 14:35 N 30 G 41 14.48 Fair CLR 0 0 0% 76.53 0.0
02 14:15 NW 31 G 44 16.09 Fair CLR 14 9 72% 76.53 0.0
02 13:55 NW 35 G 46 12.87 Fair and Breezy CLR 14 8 67% 76.53 0.0
02 13:35 NW 35 14.48 Fair and Breezy CLR 14 9 72% 76.53 0.0
02 13:15 NW 33 14.48 Fair and Breezy CLR 14 8 67% 76.56 0.0
02 12:55 NW 30 G 39 16.09 Fair CLR 14 9 72% 76.56 0.0
02 12:35 NW 24 G 37 16.09 Fair CLR 14 9 72% 76.56 0.0
02 12:15 N 20 G 31 14.48 Fair CLR 14 9 72% 76.56 0.0
02 11:55 N 20 G 33 16.09 Fair CLR 14 9 72% 76.58 0.0
02 11:35 NW 26 16.09 Fair CLR 14 8 67% 76.58 0.0
02 11:15 NW 26 16.09 Fair CLR 13 8 72% 76.58 0.0
02 10:55 N 20 16.09 Fair CLR 13 9 77% 76.58 0.0
02 10:35 N 20 G 35 14.48 Fair CLR 13 8 72% 76.58 0.0
02 10:15 N 17 G 28 16.09 Fair CLR 13 9 77% 76.56 0.0
02 09:55 N 19 16.09 Fair CLR 13 9 77% 76.56 0.0
02 09:35 NW 22 14.48 Fair CLR 12 10 88% 76.53 0.0
02 09:15 N 17 14.48 Fair CLR 12 10 88% 76.5 0.0
02 08:55 N 11 12.87 Fair CLR 12 10 88% 76.5 0.0
02 08:35 N 7 12.87 Fair CLR 11 9 88% 76.5 0.0
02 08:15 N 7 14.48 Fair CLR 10 10 100% 9 76.5 0.0
02 07:55 Calm 12.87 Fair CLR 9 9 100% 76.48 0.0
02 07:35 Calm 11.27 Fair CLR 8 8 100% 76.48 0.0
02 07:15 NE 7 11.27 Fair CLR 8 8 100% 7 76.45 0.0
02 06:55 N 9 12.87 Fair CLR 8 8 100% 7 76.45 0.0
02 06:35 N 9 14.48 Fair CLR 8 8 100% 7 76.43 0.0
02 06:15 N 7 14.48 A Few Clouds FEW046 9 9 100% 8 76.4 0.0
02 05:55 NE 9 14.48 Mostly Cloudy FEW036 BKN046 9 9 100% 8 76.4 0.0
02 05:35 N 11 14.48 Partly Cloudy FEW022 FEW030 SCT049 9 9 100% 8 76.38 0.0
02 05:15 N 11 G 20 14.48 Partly Cloudy FEW021 SCT027 SCT039 10 9 94% 9 76.35 0.0
02 04:55 N 13 14.48 Overcast SCT021 BKN026 OVC055 10 10 100% 8 76.33 0.0
02 04:35 N 9 12.87 Overcast FEW021 FEW032 OVC055 11 10 94% 76.33 0.0
02 04:15 N 13 12.87 Overcast FEW024 OVC055 11 10 94% 76.3 0.0
02 03:55 N 9 12.87 Overcast FEW023 SCT032 OVC055 11 11 100% 76.3 0.0
02 03:35 N 9 G 19 14.48 Overcast FEW022 SCT033 OVC055 11 11 100% 76.3 0.0
02 03:15 N 7 14.48 Mostly Cloudy FEW020 SCT039 BKN047 11 11 100% 76.28 0.0
02 02:55 N 9 9.66 Fog/Mist FEW009 BKN019 OVC039 11 11 100% 76.28 0.0 0.03
02 02:35 N 17 4.83 Light Rain Fog/Mist FEW007 SCT013 BKN020 11 11 100% 76.3 0.0
02 02:15 N 11 6.44 Fog/Mist FEW014 BKN021 OVC031 11 11 100% 76.3 0.0
02 01:55 N 7 16.09 Overcast OVC029 11 11 100% 76.28 0.0
02 01:35 N 11 9.66 Fog/Mist SCT013 OVC025 11 11 100% 76.28 0.0
02 01:15 N 20 4.83 Fog/Mist OVC012 11 11 100% 76.28 0.0
02 00:55 NW 24 12.87 Overcast SCT011 OVC019 12 12 100% 76.25 0.0 0.03
02 00:35 NW 17 G 31 8.05 Fog/Mist FEW008 OVC017 12 12 100% 76.25 0.0
02 00:15 W 19 9.66 Fog/Mist BKN014 OVC019 13 13 100% 76.23 0.0
01 23:55 W 13 16.09 Overcast FEW007 OVC015 13 13 100% 76.2 0.0
01 23:35 W 15 12.87 Overcast SCT006 BKN014 OVC022 13 13 100% 76.23 0.0
01 23:15 Vrbl 7 4.02 Fog/Mist SCT005 BKN010 OVC037 13 13 100% 76.2 0.0
01 22:55 W 7 G 19 11.27 Overcast FEW006 SCT017 OVC033 13 13 100% 76.2 0.0
01 22:35 Vrbl 7 9.66 Fog/Mist FEW003 SCT016 BKN020 13 13 100% 76.2 0.0
01 22:15 Calm 1.21 Light Rain Fog/Mist OVC004 13 13 100% 76.2 0.0
01 21:55 Vrbl 7 G 19 2.01 Fog/Mist SCT008 OVC014 13 13 100% 76.2 0.0
01 21:35 S 17 4.83 Fog/Mist BKN013 OVC018 13 13 100% 76.17 0.0
01 21:15 S 15 4.02 Fog/Mist SCT013 BKN021 OVC025 13 13 100% 76.15 0.0
01 20:55 S 15 G 28 6.44 Fog/Mist BKN015 OVC025 13 13 100% 76.12 0.0
01 20:35 S 19 16.09 Overcast BKN016 BKN022 OVC030 13 13 100% 76.12 0.0
01 20:15 S 17 16.09 Overcast SCT018 BKN023 OVC030 13 13 100% 76.12 0.0
01 19:55 S 15 14.48 Overcast BKN018 BKN032 OVC070 13 13 100% 76.12 0.0
01 19:35 S 13 12.87 Overcast FEW019 FEW050 OVC070 13 13 100% 76.1 0.0
01 19:15 S 11 14.48 Overcast SCT019 SCT060 OVC070 13 13 100% 76.1 0.0
01 18:55 S 11 16.09 Overcast BKN019 OVC070 14 14 100% 76.12 0.0
01 18:35 S 11 16.09 Overcast OVC020 14 14 100% 76.1 0.0
01 18:15 S 9 16.09 Overcast OVC021 14 14 100% 76.1 0.0
01 17:55 Vrbl 6 16.09 Overcast BKN023 OVC027 14 14 100% 76.12 0.0
01 17:35 SW 9 16.09 Overcast OVC027 14 14 100% 76.12 0.0
01 17:15 Vrbl 7 16.09 Overcast BKN027 OVC035 14 14 100% 76.12 0.0
01 16:55 S 9 16.09 Overcast SCT025 OVC034 14 14 100% 76.12 0.0
01 16:15 Vrbl 7 16.09 Mostly Cloudy FEW025 BKN032 BKN037 15 15 100% 76.1 0.0
01 15:55 Calm 16.09 Overcast SCT025 BKN031 OVC037 15 15 100% 76.1 0.0
01 15:35 Calm 14.48 Mostly Cloudy FEW017 SCT027 BKN032 14 14 100% 76.12 0.0
01 15:15 Calm 16.09 Overcast BKN017 OVC029 14 14 100% 76.12 0.0
01 14:55 W 7 16.09 Overcast OVC027 0 0 0% 76.12 0.0 0.13
01 14:35 NW 7 16.09 Overcast SCT021 OVC026 14 14 100% 76.15 0.0
01 14:15 NW 9 1.61 Light Rain Fog/Mist SCT005 SCT013 BKN017 13 13 100% 76.17 0.0
01 13:55 W 13 G 22 9.66 Fog/Mist SCT007 BKN013 BKN018 13 13 100% 76.15 0.0
01 13:35 W 13 14.48 Overcast FEW007 BKN014 OVC018 14 14 100% 76.15 0.0
01 13:15 Vrbl 6 14.48 Overcast OVC018 15 15 100% 76.15 0.0
01 12:55 Calm 14.48 Overcast BKN015 OVC021 14 14 100% 76.12 0.0
01 12:35 W 11 14.48 Overcast OVC016 14 14 100% 76.12 0.0
01 12:15 SW 11 11.27 Overcast OVC018 14 14 100% 76.15 0.0
01 11:55 Vrbl 9 11.27 Overcast FEW008 SCT013 OVC020 14 14 100% 76.15 0.0 0.08
01 11:35 S 13 6.44 Fog/Mist BKN005 BKN009 OVC014 14 14 100% 76.12 0.0
01 11:15 S 19 G 30 1.21 Light Rain Fog/Mist OVC004 13 13 100% 76.12 0.0
01 10:55 S 15 2.41 Fog/Mist BKN004 BKN015 13 13 100% 76.12 0.0 0.18
01 10:15 S 19 2.01 Fog/Mist SCT013 BKN023 BKN033 14 14 100% 76.1 0.0
01 09:55 S 17 6.44 Fog/Mist FEW012 BKN023 OVC047 14 14 100% 76.1 0.0
01 09:35 S 17 8.05 Fog/Mist BKN011 OVC022 14 14 100% 76.07 0.0
01 09:15 S 15 8.05 Overcast SCT007 BKN011 OVC032 0 0 0% 76.05 0.0
01 08:55 S 15 9.66 Fog/Mist BKN006 BKN010 BKN032 14 14 100% 76.05 0.0
01 08:35 S 13 8.05 Fog/Mist BKN008 BKN014 OVC060 14 14 100% 76.02 0.0
01 08:15 S 13 8.05 Fog/Mist SCT007 BKN032 OVC060 14 14 100% 76.02 0.0
01 07:55 S 13 8.05 Fog/Mist BKN006 BKN013 OVC031 13 13 100% 76.02 0.0
01 07:35 S 13 4.83 Fog/Mist BKN005 BKN009 OVC013 13 13 100% 76 0.0
01 07:15 S 11 4.83 Fog/Mist OVC005 13 13 100% 76 0.0
01 06:55 SE 9 4.83 Overcast OVC004 0 0 0% 75.97 0.0
01 06:35 SE 9 6.44 Fog/Mist OVC004 13 13 100% 75.97 0.0
01 06:15 S 7 6.44 Fog/Mist OVC003 13 13 100% 75.97 0.0
01 05:55 S 9 6.44 Fog/Mist OVC003 13 13 100% 75.95 0.0
01 05:35 S 9 6.44 Fog/Mist OVC003 13 13 100% 75.95 0.0
01 05:15 S 11 6.44 Fog/Mist OVC003 13 13 100% 75.95 0.0
01 04:35 S 7 6.44 Fog/Mist OVC003 14 14 100% 75.97 0.0
01 04:15 Vrbl 7 4.83 Fog/Mist OVC003 14 14 100% 75.95 0.0
01 03:55 S 11 G 20 6.44 Fog/Mist OVC003 14 14 100% 75.95 0.0
01 03:35 SW 13 G 22 6.44 Fog/Mist BKN004 OVC008 14 14 100% 75.95 0.0
01 03:15 S 15 G 24 6.44 Fog/Mist OVC007 14 14 100% 75.95 0.0
01 02:55 S 19 8.05 Fog/Mist SCT009 BKN019 OVC042 14 14 100% 75.95 0.0
01 02:35 S 19 9.66 Fog/Mist BKN015 OVC019 14 14 100% 75.95 0.0
01 02:15 S 19 9.66 Fog/Mist OVC014 14 14 100% 75.97 0.0
01 01:55 S 17 G 26 9.66 Fog/Mist BKN010 OVC015 14 14 100% 75.97 0.0
01 01:35 Calm 9.66 Fog/Mist BKN009 OVC014 14 14 100% 76 0.0
01 01:15 Calm 11.27 Overcast BKN010 OVC013 14 14 100% 76 0.0
01 00:55 Calm 11.27 Overcast BKN011 BKN020 OVC027 14 14 100% 76 0.0
01 00:35 Calm 11.27 Overcast FEW011 OVC029 14 14 100% 76 0.0
01 00:15 Calm 14.48 Overcast FEW011 OVC027 14 14 100% 76 0.0
31 23:55 S 11 12.87 Overcast OVC024 14 14 100% 76 0.0
31 23:35 S 7 11.27 Overcast FEW018 BKN023 OVC075 13 13 100% 76 0.0
31 23:15 S 6 11.27 Overcast SCT013 OVC075 13 13 100% 75.97 0.0
31 22:55 SE 9 11.27 Overcast BKN013 BKN041 OVC080 14 14 100% 75.97 0.0
31 22:35 S 9 11.27 Overcast SCT040 OVC075 14 14 100% 76 0.0
31 22:15 SE 13 9.66 Fog/Mist BKN036 OVC075 14 14 100% 75.97 0.0
31 21:55 S 13 11.27 Overcast OVC033 14 14 100% 75.97 0.0
31 21:35 SE 17 G 26 9.66 Fog/Mist BKN032 BKN060 OVC085 14 14 100% 75.95 0.0
31 21:15 SE 19 11.27 Overcast FEW009 BKN065 OVC085 14 14 100% 75.95 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)