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.
02 00:15 S 6 14.48 Mostly Cloudy FEW017 BKN029 14 14 100% 76.28 0.0
01 23:55 Calm 14.48 Overcast BKN019 OVC029 14 14 100% 76.3 0.0
01 23:35 Calm 12.87 Mostly Cloudy SCT019 BKN028 BKN033 14 14 100% 76.3 0.0
01 23:15 Calm 12.87 Mostly Cloudy FEW016 SCT034 BKN100 15 15 100% 76.28 0.0
01 22:55 Calm 12.87 Partly Cloudy FEW016 FEW034 SCT100 15 15 100% 76.3 0.0
01 22:35 SE 7 12.87 A Few Clouds FEW100 15 15 100% 76.28 0.0
01 22:15 SE 7 12.87 A Few Clouds FEW110 15 15 100% 76.3 0.0
01 21:55 SE 9 11.27 Fair CLR 15 15 100% 76.3 0.0
01 21:35 SE 9 11.27 Mostly Cloudy BKN009 16 16 100% 76.3 0.0
01 21:15 SE 11 11.27 Overcast OVC008 16 16 100% 76.3 0.0
01 20:55 SE 9 11.27 Mostly Cloudy BKN008 BKN020 16 16 100% 76.28 0.0
01 20:15 SE 9 9.66 Fog/Mist OVC006 16 16 100% 76.28 0.0
01 19:55 SE 9 9.66 Fog/Mist OVC005 16 16 100% 76.28 0.0
01 19:35 SE 7 8.05 Fog/Mist BKN006 BKN018 16 16 100% 76.28 0.0
01 19:15 S 9 9.66 Fog/Mist SCT006 16 16 100% 76.28 0.0
01 18:55 S 9 9.66 Fog/Mist FEW017 17 17 100% 76.25 0.0
01 18:35 S 9 9.66 Fog/Mist FEW007 17 17 100% 76.25 0.0
01 18:15 S 9 9.66 Fog/Mist SCT007 17 17 100% 76.25 0.0
01 17:55 Vrbl 9 11.27 Fair CLR 18 16 88% 76.25 0.0
01 17:35 Vrbl 11 11.27 Fair CLR 18 17 94% 76.25 0.0
01 17:15 Vrbl 9 G 19 11.27 Fair CLR 18 17 94% 76.25 0.0
01 16:55 Vrbl 9 11.27 Fair CLR 0 0 0% 76.25 0.0
01 16:35 Vrbl 6 11.27 Fair CLR 19 17 88% 76.25 0.0
01 16:15 SW 11 11.27 Fair CLR 18 17 94% 76.28 0.0
01 15:55 SW 9 11.27 Fair CLR 19 17 88% 76.3 0.0
01 15:35 SW 15 12.87 Fair CLR 18 17 94% 76.28 0.0
01 15:15 SW 15 12.87 Fair CLR 19 17 88% 76.3 0.0
01 14:55 Vrbl 9 G 19 12.87 Fair CLR 19 17 88% 76.3 0.0
01 14:35 Vrbl 11 G 24 9.66 Fog/Mist CLR 18 17 94% 76.3 0.0
01 14:15 SW 11 G 22 11.27 Fair CLR 19 17 88% 76.3 0.0
01 13:55 SW 11 11.27 Fair CLR 19 17 88% 76.3 0.0
01 13:35 SW 11 9.66 Fair with Haze CLR 0 0 0% 76.3 0.0
01 13:15 S 13 11.27 A Few Clouds FEW049 19 17 88% 76.3 0.0
01 12:55 S 13 11.27 Mostly Cloudy BKN050 19 17 88% 76.3 0.0
01 12:35 S 11 G 22 12.87 Overcast OVC050 19 16 83% 76.33 0.0
01 12:15 S 15 11.27 Overcast SCT013 OVC050 18 16 88% 76.33 0.0
01 11:55 S 11 11.27 NULL NULL 18 16 88% 76.33 0.0
01 11:35 S 15 11.27 Mostly Cloudy SCT013 BKN049 18 16 88% 76.33 0.0
01 11:15 S 15 11.27 Mostly Cloudy BKN049 18 16 88% 76.3 0.0
01 10:55 S 13 11.27 Overcast OVC047 17 16 94% 76.3 0.0
01 10:35 S 13 9.66 Fog/Mist FEW011 BKN045 17 16 94% 76.28 0.0
01 10:15 S 9 8.05 Fog/Mist BKN045 17 16 94% 76.28 0.0
01 09:55 S 9 8.05 Fog/Mist FEW007 SCT013 BKN045 17 17 100% 76.28 0.0
01 09:35 Vrbl 7 9.66 Fog/Mist SCT007 OVC043 0 0 0% 76.25 0.0
01 09:15 SW 7 9.66 Fog/Mist OVC042 17 17 100% 76.25 0.0
01 08:55 SW 11 9.66 Fog/Mist OVC042 16 16 100% 76.23 0.0
01 08:35 SW 7 9.66 Fog/Mist OVC042 16 16 100% 76.23 0.0
01 08:15 SW 9 8.05 Fog/Mist OVC041 16 16 100% 76.2 0.0
01 07:55 SW 13 8.05 Fog/Mist OVC041 16 16 100% 76.2 0.0
01 07:35 SW 11 9.66 Fog/Mist OVC041 16 16 100% 76.17 0.0
01 07:15 Calm 11.27 Overcast OVC041 16 14 88% 76.15 0.0
01 06:55 SE 6 11.27 Overcast OVC040 16 14 88% 76.15 0.0
01 06:35 SE 7 12.87 Overcast OVC040 16 14 88% 76.12 0.0
01 06:15 SE 7 12.87 Overcast FEW013 OVC039 15 14 94% 76.12 0.0
01 05:55 Calm 12.87 Overcast FEW015 OVC039 15 13 88% 76.12 0.0
01 05:35 Calm 12.87 Overcast OVC037 15 14 94% 76.1 0.0
01 05:15 Calm 12.87 Overcast OVC037 15 14 94% 76.1 0.0
01 04:55 Calm 12.87 Overcast OVC037 16 14 88% 76.1 0.0
01 04:35 SE 6 12.87 Overcast OVC037 16 13 83% 76.1 0.0
01 04:15 SW 6 12.87 Overcast OVC036 16 13 83% 76.1 0.0
01 03:55 Calm 14.48 Overcast OVC034 16 14 88% 76.12 0.0
01 03:35 Calm 12.87 Overcast OVC033 16 14 88% 76.1 0.0
01 03:15 Calm 12.87 Overcast OVC032 16 14 88% 76.1 0.0
01 02:55 Calm 14.48 Overcast OVC033 16 13 83% 76.1 0.0
01 02:35 Calm 14.48 Overcast OVC033 16 14 88% 76.1 0.0
01 02:15 Calm 12.87 Overcast OVC033 16 14 88% 76.1 0.0
01 01:55 Calm 12.87 Overcast OVC033 16 13 83% 76.1 0.0
01 01:35 Calm 11.27 Overcast OVC030 16 14 88% 76.1 0.0
01 01:15 W 9 11.27 Overcast OVC030 16 14 88% 76.1 0.0
01 00:55 Calm 9.66 Fog/Mist OVC029 16 15 94% 76.1 0.0
01 00:35 W 6 9.66 Fog/Mist OVC030 16 15 94% 76.1 0.0
01 00:15 W 7 8.05 Fog/Mist OVC029 16 16 100% 76.1 0.0
31 23:55 W 6 9.66 Fog/Mist OVC030 16 16 100% 76.1 0.0
31 23:35 NW 6 9.66 Fog/Mist OVC029 16 16 100% 76.1 0.0
31 23:15 NW 7 11.27 Overcast FEW012 FEW019 OVC031 16 15 94% 76.12 0.0
31 22:55 W 6 11.27 Overcast OVC030 16 15 94% 76.12 0.0
31 22:15 W 9 11.27 Overcast OVC030 16 15 94% 76.12 0.0
31 21:55 NW 7 9.66 Fog/Mist OVC028 16 16 100% 76.12 0.0
31 21:35 NW 7 9.66 Fog/Mist FEW021 OVC028 16 16 100% 76.1 0.0
31 21:15 Calm 8.05 Fog/Mist FEW021 OVC027 16 16 100% 76.1 0.0
31 20:55 NW 6 9.66 Fog/Mist OVC028 16 15 94% 76.1 0.0
31 20:35 W 7 9.66 Fog/Mist FEW022 OVC028 16 15 94% 76.07 0.0
31 20:15 NW 7 8.05 Fog/Mist OVC027 16 16 100% 76.07 0.0
31 19:55 W 7 8.05 Fog/Mist OVC027 16 16 100% 76.07 0.0
31 19:35 W 7 6.44 Fog/Mist OVC028 16 16 100% 76.05 0.0
31 19:15 W 9 6.44 Overcast OVC028 0 0 0% 76.05 0.0
31 18:55 W 7 6.44 Fog/Mist OVC028 16 16 100% 76.05 0.0
31 18:35 W 6 6.44 Fog/Mist OVC028 16 16 100% 76.07 0.0
31 18:15 Vrbl 6 8.05 Fog/Mist OVC027 17 16 94% 76.07 0.0
31 17:55 Vrbl 7 8.05 Fog/Mist OVC028 17 16 94% 76.07 0.0
31 17:35 SW 7 8.05 Fog/Mist OVC027 16 16 100% 76.07 0.0
31 17:15 SW 9 8.05 Fog/Mist FEW014 OVC025 16 16 100% 76.07 0.0
31 16:55 SW 11 8.05 Fog/Mist OVC025 17 15 88% 76.07 0.0
31 16:35 W 7 9.66 Fog/Mist FEW019 OVC026 17 15 88% 76.1 0.0
31 16:15 SW 13 8.05 Fog/Mist SCT019 OVC026 16 15 94% 76.1 0.0
31 15:35 SW 7 9.66 Fog/Mist FEW021 OVC027 17 15 88% 76.12 0.0
31 15:15 SW 7 8.05 Fog/Mist OVC027 17 15 88% 76.12 0.0
31 14:55 SW 7 8.05 Fog/Mist OVC027 17 15 88% 76.12 0.0
31 14:35 Vrbl 7 9.66 Fog/Mist FEW014 FEW019 OVC028 17 15 88% 76.15 0.0
31 14:15 S 9 9.66 Fog/Mist SCT019 OVC028 17 15 88% 76.15 0.0
31 13:55 Vrbl 7 9.66 Fog/Mist FEW017 OVC027 17 15 88% 76.17 0.0
31 13:35 SW 9 8.05 Fog/Mist SCT014 OVC026 16 15 94% 76.17 0.0
31 13:15 SW 9 6.44 Fog/Mist SCT016 OVC024 16 15 94% 76.17 0.0
31 12:55 S 11 8.05 Fog/Mist FEW014 OVC025 16 15 94% 76.17 0.0
31 12:35 S 11 6.44 Fog/Mist FEW015 OVC024 16 15 94% 76.17 0.0
31 12:15 S 7 6.44 Fog/Mist FEW015 OVC023 16 15 94% 76.17 0.0
31 11:55 Vrbl 7 4.83 Fog/Mist FEW014 OVC022 16 15 94% 76.17 0.0
31 11:35 Calm 8.05 Fog/Mist OVC022 16 15 94% 76.17 0.0
31 10:55 Calm 6.44 Fog/Mist BKN022 15 15 100% 76.17 0.0
31 10:35 Calm 3.22 Fog/Mist BKN018 BKN022 15 15 100% 76.17 0.0
31 10:15 W 6 3.22 Fog/Mist BKN017 BKN021 15 15 100% 76.17 0.0
31 09:55 W 9 2.41 Fog/Mist FEW006 BKN016 15 15 100% 76.15 0.0
31 09:35 W 6 2.41 Fog/Mist FEW006 BKN016 15 15 100% 76.15 0.0
31 09:15 SW 6 2.82 Fog/Mist OVC016 15 15 100% 76.12 0.0
31 08:55 Calm 3.22 Fog/Mist BKN016 14 14 100% 76.12 0.0
31 08:35 W 7 2.82 Fog/Mist OVC016 14 14 100% 76.12 0.0
31 07:55 Calm 4.02 Fog/Mist OVC015 14 14 100% 76.1 0.0
31 07:35 Calm 4.83 Overcast OVC014 0 0 0% 76.1 0.0
31 07:15 NW 11 4.83 Fog/Mist OVC014 14 14 100% 76.07 0.0
31 06:55 NW 7 8.05 Fog/Mist OVC015 14 14 100% 76.05 0.0
31 06:35 NW 11 4.83 Fog/Mist OVC014 14 14 100% 76.05 0.0
31 06:15 NW 13 8.05 Fog/Mist OVC014 14 14 100% 76.05 0.0
31 05:55 NW 9 9.66 Fog/Mist OVC014 15 14 94% 76.05 0.0
31 05:35 NW 13 8.05 Fog/Mist OVC014 15 14 94% 76.05 0.0
31 05:15 NW 7 8.05 Fog/Mist OVC014 15 14 94% 76.05 0.0
31 04:55 W 9 9.66 Fog/Mist OVC014 15 14 94% 76.02 0.0
31 04:35 W 9 8.05 Fog/Mist OVC014 15 14 94% 76.02 0.0
31 04:15 Calm 8.05 Fog/Mist OVC014 15 14 94% 76.02 0.0
31 03:55 W 9 8.05 Overcast OVC014 0 0 0% 76.05 0.0
31 03:35 SW 6 9.66 Fog/Mist OVC014 15 13 88% 76.02 0.0
31 03:15 SW 6 9.66 Fog/Mist OVC014 15 13 88% 76.02 0.0
31 02:55 Calm 8.05 Fog/Mist OVC014 15 13 88% 76 0.0
31 02:35 SW 7 9.66 Overcast OVC014 0 0 0% 76 0.0
31 02:15 Calm 8.05 Fog/Mist OVC014 15 13 88% 76 0.0
31 01:55 Calm 8.05 Overcast OVC014 0 0 0% 76.02 0.0
31 01:35 Calm 8.05 Fog/Mist OVC013 14 14 100% 76.02 0.0
31 01:15 Calm 8.05 Fog/Mist OVC013 15 14 94% 76.05 0.0
31 00:55 S 6 8.05 Fog/Mist OVC013 14 14 100% 76.05 0.0
31 00:35 S 6 8.05 Fog/Mist OVC013 14 14 100% 76.02 0.0
31 00:15 S 6 9.66 Fog/Mist OVC013 14 14 100% 76.02 0.0
30 23:55 S 7 9.66 Fog/Mist OVC013 14 14 100% 76.02 0.0
30 23:35 S 6 9.66 Fog/Mist OVC013 14 14 100% 76.05 0.0
30 23:15 S 6 9.66 Fog/Mist OVC012 15 14 94% 76.05 0.0
30 22:55 SE 7 8.05 Fog/Mist OVC012 14 14 100% 76.05 0.0
30 22:35 S 6 8.05 Fog/Mist OVC011 14 14 100% 76.05 0.0
30 22:15 S 6 8.05 Fog/Mist OVC011 14 14 100% 76.05 0.0
30 21:55 Calm 8.05 Fog/Mist OVC012 14 14 100% 76.05 0.0
30 21:35 Calm 8.05 Fog/Mist OVC011 14 14 100% 76.05 0.0
30 21:15 Calm 8.05 Fog/Mist OVC011 14 14 100% 76.05 0.0
30 20:55 Vrbl 6 6.44 Fog/Mist OVC011 14 14 100% 76.02 0.0
30 20:35 Calm 6.44 Fog/Mist OVC011 14 14 100% 76.02 0.0
30 20:15 Calm 6.44 Fog/Mist OVC010 14 14 100% 76.02 0.0
30 19:55 Calm 8.05 Fog/Mist OVC010 14 14 100% 76.02 0.0
30 19:35 Calm 6.44 Fog/Mist OVC010 14 14 100% 76.02 0.0
30 19:15 Calm 6.44 Fog/Mist OVC010 14 14 100% 76.02 0.0
30 18:55 Calm 6.44 Fog/Mist OVC008 14 14 100% 76.02 0.0
30 18:35 NW 9 4.83 Fog/Mist OVC008 14 14 100% 76.02 0.0
30 18:15 W 6 4.83 Mostly Cloudy BKN008 BKN013 0 0 0% 76.05 0.0
30 17:55 SW 7 6.44 Fog/Mist BKN013 15 14 94% 76.05 0.0
30 17:35 W 9 8.05 Fog/Mist OVC013 15 14 94% 76.05 0.0
30 17:15 Vrbl 7 6.44 Fog/Mist OVC013 15 14 94% 76.05 0.0
30 16:55 Vrbl 9 6.44 Fog/Mist OVC013 16 14 88% 76.05 0.0
30 16:35 SW 9 8.05 Fog/Mist OVC013 16 14 88% 76.05 0.0
30 16:15 SW 11 8.05 Fog/Mist OVC013 16 14 88% 76.05 0.0
30 15:55 SW 13 8.05 Overcast with Haze OVC013 16 14 88% 76.07 0.0
30 15:35 SW 9 8.05 Mostly Cloudy with Haze BKN013 16 14 88% 76.07 0.0
30 15:15 Vrbl 9 6.44 Mostly Cloudy BKN013 0 0 0% 76.07 0.0
30 14:55 W 7 6.44 Overcast with Haze OVC013 16 14 88% 76.1 0.0
30 14:35 Calm 8.05 Fog/Mist OVC013 16 14 88% 76.12 0.0
30 14:15 S 11 6.44 Fog/Mist OVC013 16 14 88% 76.15 0.0
30 13:55 Calm 8.05 Fog/Mist OVC013 16 14 88% 76.15 0.0
30 13:35 Vrbl 7 8.05 Fog/Mist OVC013 16 14 88% 76.17 0.0
30 13:15 Calm 6.44 Fog/Mist OVC013 15 14 94% 76.17 0.0
30 12:55 S 9 6.44 Fog/Mist OVC013 16 14 88% 76.17 0.0
30 12:35 S 9 6.44 Fog/Mist OVC013 16 14 88% 76.17 0.0
30 12:15 Vrbl 7 6.44 Fog/Mist OVC013 15 14 94% 76.17 0.0
30 11:55 S 9 6.44 Fog/Mist OVC013 16 14 88% 76.17 0.0
30 11:35 Vrbl 7 4.83 Fog/Mist BKN013 15 14 94% 76.2 0.0
30 11:15 Calm 4.02 Fog/Mist BKN013 15 14 94% 76.2 0.0
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
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)