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.
21 11:35 S 15 8.05 Fog/Mist FEW017 SCT021 BKN055 15 14 94% 76.07 0.0
21 11:15 S 19 14.48 Partly Cloudy SCT022 SCT046 SCT055 15 14 94% 76.07 0.0
21 10:55 S 17 14.48 Mostly Cloudy FEW021 BKN055 15 14 94% 76.05 0.0
21 10:35 S 17 11.27 Mostly Cloudy BKN060 BKN070 15 14 94% 76.05 0.0
21 10:15 S 19 11.27 Fair CLR 14 14 100% 76.05 0.0
21 09:55 S 17 11.27 Fair CLR 14 14 100% 76.02 0.0
21 09:35 S 17 G 26 14.48 A Few Clouds FEW060 14 13 94% 76 0.0
21 09:15 Vrbl 11 14.48 Mostly Cloudy FEW012 BKN055 14 13 94% 76 0.0
21 08:55 SW 15 12.87 Mostly Cloudy SCT012 BKN055 BKN070 14 14 100% 75.97 0.0 0.03
21 08:35 Vrbl 7 9.66 Fog/Mist FEW060 14 14 100% 75.97 0.0
21 08:15 Vrbl 7 G 20 14.48 Partly Cloudy FEW013 FEW018 SCT065 14 14 100% 75.97 0.0
21 07:55 SW 11 14.48 Overcast SCT012 BKN018 OVC070 14 14 100% 75.95 0.0
21 07:35 S 11 11.27 Overcast BKN011 BKN017 OVC120 13 13 100% 75.95 0.0
21 07:15 S 17 G 26 11.27 Overcast SCT008 BKN013 OVC120 13 13 100% 75.92 0.0
21 06:55 S 6 11.27 Overcast BKN008 BKN018 OVC120 12 12 100% 75.92 0.0
21 06:35 SE 9 11.27 Mostly Cloudy FEW010 SCT025 BKN110 12 12 100% 75.9 0.0
21 06:15 S 17 16.09 Overcast FEW009 BKN036 OVC110 12 12 100% 75.9 0.0
21 05:55 S 15 14.48 Overcast OVC034 12 12 100% 75.9 0.0
21 05:35 S 17 16.09 Overcast FEW009 OVC032 13 13 100% 75.9 0.0
21 05:15 S 19 16.09 Overcast SCT008 BKN013 OVC030 13 13 100% 75.9 0.0
21 04:15 S 19 14.48 Overcast SCT008 BKN012 OVC039 12 12 100% 75.9 0.0
21 03:55 Calm 16.09 Overcast FEW008 BKN040 OVC055 12 12 100% 75.92 0.0 0.05
21 03:35 Calm 16.09 Mostly Cloudy FEW007 SCT037 BKN055 11 11 100% 75.9 0.0
21 03:15 Calm 16.09 Overcast SCT007 BKN037 OVC050 0 0 0% 75.92 0.0
21 02:55 E 7 16.09 Overcast BKN005 BKN009 OVC013 11 11 100% 75.92 0.0 0.03
21 02:35 SE 9 2.01 Fog/Mist BKN007 OVC014 11 11 100% 75.92 0.0
21 02:15 SE 11 1.61 Fog/Mist BKN007 BKN016 OVC023 11 11 100% 75.92 0.0
21 01:55 SE 7 1.61 Fog/Mist BKN007 BKN012 OVC021 12 12 100% 75.95 0.0 0.05
21 01:35 SE 7 14.48 Overcast FEW007 BKN012 OVC027 12 12 100% 75.95 0.0
21 01:15 SE 7 9.66 Light Rain Fog/Mist FEW008 BKN011 OVC035 12 12 100% 75.95 0.0
21 00:55 SE 7 8.05 Light Rain Fog/Mist SCT008 BKN012 OVC050 12 12 100% 75.95 0.0 0.08
21 00:35 E 11 4.02 Light Rain Fog/Mist BKN007 OVC012 12 12 100% 75.92 0.0
21 00:15 SE 9 2.82 Light Rain Fog/Mist OVC008 12 12 100% 75.95 0.0
20 23:55 SE 11 2.82 Light Rain Fog/Mist OVC006 12 12 100% 75.95 0.0 0.1
20 23:35 SE 9 4.02 Light Rain Fog/Mist OVC006 12 12 100% 75.92 0.0
20 23:15 SE 11 4.83 Light Rain Fog/Mist BKN007 BKN017 OVC027 12 12 100% 75.92 0.0
20 22:55 S 9 3.22 Light Rain Fog/Mist SCT007 BKN016 OVC031 12 12 100% 75.95 0.0 0.1
20 22:35 S 11 4.83 Light Rain Fog/Mist SCT007 BKN014 OVC065 12 12 100% 75.95 0.0
20 22:15 SW 11 4.02 Light Rain Fog/Mist BKN005 BKN009 OVC036 12 12 100% 75.97 0.0
20 21:55 S 11 3.22 Light Rain Fog/Mist BKN006 BKN012 OVC034 12 12 100% 75.95 0.0 0.13
20 21:35 Calm 3.22 Light Rain Fog/Mist BKN007 OVC011 12 12 100% 75.97 0.0
20 21:15 S 7 4.83 Light Rain Fog/Mist BKN013 OVC017 12 12 100% 75.97 0.0
20 20:55 Calm 4.02 Light Rain Fog/Mist OVC018 12 12 100% 75.92 0.0 0.08
20 20:35 S 6 3.22 Light Rain Fog/Mist FEW006 OVC021 12 12 100% 75.92 0.0
20 20:15 Calm 2.82 Light Rain Fog/Mist BKN005 OVC024 12 12 100% 75.92 0.0
20 19:55 SW 15 1.21 Light Rain Fog/Mist OVC004 12 12 100% 75.92 0.0 0.13
20 19:35 Calm 3.22 Fog/Mist BKN005 BKN008 12 12 100% 75.87 0.0
20 19:15 Calm 2.01 Fog/Mist BKN006 BKN013 12 12 100% 75.9 0.0
20 18:55 W 7 2.01 Fog/Mist SCT006 SCT009 OVC013 12 12 100% 75.92 0.0 0.05
20 18:35 W 9 2.41 Fog/Mist BKN005 BKN009 OVC015 12 12 100% 75.92 0.0
20 18:15 SW 7 1.21 Light Rain Fog/Mist OVC005 13 13 100% 75.92 0.0
20 17:55 Calm 1.61 Light Rain Fog/Mist SCT005 BKN011 OVC044 13 13 100% 75.95 0.0 0.1
20 17:15 S 26 0.80 Fog/Mist BKN006 BKN013 OVC019 13 13 100% 75.92 0.0
20 16:35 S 22 G 37 2.01 Fog/Mist SCT006 OVC028 14 14 100% 75.95 0.0
20 15:55 S 31 G 46 0.80 Fog BKN006 BKN026 BKN037 14 14 100% 75.97 0.0 0.1
20 15:35 S 33 G 43 0.80 Fog and Breezy SCT008 BKN024 BKN029 14 14 100% 75.97 0.0
20 15:15 S 30 G 43 1.61 Fog/Mist FEW018 SCT024 SCT030 14 14 100% 75.97 0.0
20 14:55 S 26 G 41 2.01 Fog/Mist SCT018 SCT034 14 14 100% 75.97 0.0 0.1
20 14:35 S 31 G 46 2.41 Fog/Mist SCT029 BKN035 14 14 100% 75.97 0.0
20 14:15 S 35 G 48 1.21 Fog/Mist and Breezy BKN029 OVC034 14 14 100% 75.97 0.0
20 13:55 S 37 2.01 Fog/Mist and Breezy BKN029 BKN034 14 14 100% 75.97 0.0 0.05
20 13:35 S 31 2.82 Fog/Mist BKN030 BKN035 BKN042 15 15 100% 75.97 0.0
20 13:15 S 35 G 46 4.02 Fog/Mist and Breezy BKN030 15 15 100% 75.97 0.0
20 12:55 S 24 11.27 A Few Clouds FEW035 15 15 100% 75.97 0.0 0.18
20 12:35 Calm 4.83 Fog/Mist SCT036 BKN042 14 14 100% 76 0.0
20 12:15 S 30 G 46 2.01 Fog/Mist FEW023 SCT037 SCT043 13 13 100% 76.05 0.0
20 11:55 S 33 G 43 0.80 Fog/Mist and Breezy BKN027 BKN036 OVC045 13 13 100% 76.05 0.0 0.03
20 11:35 S 33 14.48 Overcast and Breezy FEW029 BKN039 OVC045 16 12 77% 76 0.0
20 11:15 S 30 14.48 Overcast OVC040 17 13 77% 75.95 0.0
20 10:55 S 26 G 37 14.48 Overcast OVC042 17 13 77% 75.95 0.0
20 10:35 S 22 16.09 Overcast OVC045 17 13 77% 75.92 0.0
20 10:15 S 26 16.09 NULL NULL 17 13 77% 75.92 0.0
20 09:55 S 24 14.48 Mostly Cloudy BKN049 BKN055 17 14 83% 75.9 0.0
20 09:35 S 20 14.48 Mostly Cloudy FEW026 BKN050 BKN055 16 13 83% 75.9 0.0
20 09:15 SE 19 16.09 Overcast SCT026 BKN060 OVC070 16 13 83% 75.92 0.0
20 08:55 SE 17 16.09 Mostly Cloudy FEW028 BKN065 15 13 88% 75.92 0.0
20 08:35 SE 17 14.48 A Few Clouds FEW070 15 12 82% 75.92 0.0
20 08:15 SE 20 11.27 Partly Cloudy FEW026 FEW049 SCT080 14 12 88% 75.95 0.0
20 07:55 S 26 14.48 Overcast BKN025 OVC075 14 12 88% 75.92 0.0
20 07:35 S 22 G 35 14.48 Overcast OVC027 14 11 82% 75.92 0.0
20 07:15 SE 19 16.09 Overcast OVC028 14 11 82% 75.92 0.0
20 06:55 SE 19 G 30 16.09 Overcast OVC028 13 11 88% 75.9 0.0
20 06:35 SE 22 16.09 Overcast OVC032 13 11 88% 75.87 0.0
20 06:15 SE 24 16.09 Overcast BKN028 OVC035 13 11 88% 75.87 0.0
20 05:55 SE 22 16.09 Mostly Cloudy BKN029 BKN034 13 12 94% 75.87 0.0
20 05:35 S 26 16.09 Partly Cloudy SCT018 SCT034 13 12 94% 75.9 0.0
20 05:15 S 24 16.09 Overcast OVC017 13 12 94% 75.9 0.0
20 04:55 S 15 G 28 16.09 Overcast OVC017 13 11 88% 75.9 0.0
20 04:35 SE 17 G 26 16.09 Overcast OVC020 13 10 82% 75.9 0.0
20 04:15 SE 17 G 26 16.09 Overcast OVC021 13 9 77% 75.9 0.0
20 03:55 SE 13 16.09 Overcast OVC018 12 8 77% 75.9 0.0
20 03:35 SE 13 G 26 16.09 Overcast OVC016 12 9 82% 75.87 0.0
20 03:15 SE 19 16.09 Mostly Cloudy BKN016 12 9 82% 75.87 0.0
20 02:55 SE 13 16.09 A Few Clouds FEW016 12 9 82% 75.9 0.0
20 02:35 SE 11 16.09 Mostly Cloudy BKN017 12 9 82% 75.9 0.0
20 02:15 SE 15 16.09 Mostly Cloudy BKN017 12 10 88% 75.9 0.0
20 01:55 SE 13 16.09 Partly Cloudy SCT016 12 10 88% 75.9 0.0
20 01:35 SE 17 16.09 A Few Clouds FEW019 FEW026 12 11 94% 75.92 0.0
20 01:15 SE 19 16.09 Partly Cloudy BKN019 SCT026 12 10 88% 75.92 0.0
20 00:55 SE 17 16.09 Overcast OVC019 12 11 94% 75.95 0.0
20 00:35 SE 20 16.09 Overcast OVC019 12 12 100% 75.95 0.0
20 00:15 SE 19 16.09 Overcast OVC019 12 12 100% 75.95 0.0
19 23:55 SE 19 16.09 Overcast BKN018 OVC022 13 12 94% 75.95 0.0
19 23:35 SE 20 16.09 Mostly Cloudy BKN019 13 12 94% 75.95 0.0
19 23:15 S 19 16.09 Overcast OVC020 13 12 94% 75.97 0.0
19 22:55 S 22 16.09 Overcast OVC018 13 12 94% 75.97 0.0
19 22:35 S 19 G 30 16.09 Overcast OVC019 13 12 94% 76 0.0
19 22:15 S 19 G 28 16.09 Mostly Cloudy BKN017 13 12 94% 75.97 0.0
19 21:55 S 22 16.09 A Few Clouds FEW017 13 12 94% 75.95 0.0
19 21:35 S 17 16.09 Fair CLR 13 11 88% 75.92 0.0
19 21:15 S 19 G 30 16.09 Fair CLR 13 12 94% 75.9 0.0
19 20:55 S 22 16.09 Fair CLR 14 12 88% 75.87 0.0
19 20:35 S 20 16.09 Fair CLR 14 12 88% 75.87 0.0
19 20:15 S 20 16.09 Fair CLR 14 11 82% 75.84 0.0
19 19:55 S 19 16.09 Fair CLR 13 12 94% 75.84 0.0
19 19:35 S 17 14.48 Fair CLR 14 13 94% 75.84 0.0
19 19:15 S 22 14.48 Fair CLR 14 12 88% 75.84 0.0
19 18:55 S 20 14.48 Fair CLR 14 13 94% 75.84 0.0
19 18:35 S 20 16.09 Fair CLR 15 12 82% 75.84 0.0
19 18:15 S 20 16.09 Fair CLR 15 12 82% 75.87 0.0
19 17:55 S 17 16.09 Fair CLR 15 12 82% 75.87 0.0
19 17:35 S 17 16.09 Fair CLR 15 12 82% 75.9 0.0
19 17:15 S 15 14.48 Fair CLR 16 13 83% 75.87 0.0
19 16:55 S 13 16.09 A Few Clouds FEW016 16 14 88% 75.87 0.0
19 16:35 S 15 16.09 Partly Cloudy SCT015 15 13 88% 75.87 0.0
19 16:15 S 15 14.48 Mostly Cloudy BKN015 16 14 88% 75.87 0.0
19 15:55 S 11 14.48 Mostly Cloudy BKN015 16 13 83% 75.9 0.0
19 15:35 S 13 16.09 Partly Cloudy SCT014 16 14 88% 75.9 0.0
19 15:15 S 13 16.09 A Few Clouds FEW014 16 14 88% 75.92 0.0
19 14:55 S 15 14.48 Fair CLR 16 14 88% 75.92 0.0
19 14:35 S 15 14.48 Fair CLR 16 14 88% 75.92 0.0
19 14:15 S 13 14.48 Fair CLR 16 14 88% 75.95 0.0
19 13:55 S 15 16.09 Fair CLR 15 14 94% 75.95 0.0
19 13:35 S 11 16.09 A Few Clouds FEW013 16 14 88% 75.95 0.0
19 13:15 S 13 14.48 Fair CLR 15 13 88% 75.97 0.0
19 12:55 S 9 14.48 Fair CLR 15 13 88% 76 0.0
19 12:35 S 13 16.09 Partly Cloudy SCT013 15 13 88% 76 0.0
19 12:15 S 13 14.48 Overcast OVC013 0 0 0% 76 0.0
19 11:55 S 11 14.48 Mostly Cloudy BKN013 15 13 88% 76.02 0.0
19 11:35 SE 15 14.48 Mostly Cloudy BKN013 15 14 94% 76.02 0.0
19 11:15 S 11 14.48 Mostly Cloudy BKN013 14 13 94% 76.02 0.0
19 10:55 S 11 14.48 Mostly Cloudy BKN013 14 13 94% 76.05 0.0
19 10:35 SW 9 14.48 A Few Clouds FEW013 14 13 94% 76.02 0.0
19 10:15 S 9 14.48 A Few Clouds FEW013 14 13 94% 76 0.0
19 09:55 Vrbl 9 14.48 A Few Clouds FEW013 13 12 94% 76 0.0
19 09:35 SW 9 14.48 A Few Clouds FEW013 14 13 94% 76 0.0
19 09:15 SE 9 14.48 Fair CLR 13 13 100% 75.97 0.0
19 08:55 SE 11 14.48 Fair CLR 13 13 100% 75.95 0.0
19 08:35 SE 9 14.48 Fair CLR 13 12 94% 75.95 0.0
19 08:15 Calm 16.09 Fair CLR 12 12 100% 75.95 0.0
19 07:55 Calm 16.09 Mostly Cloudy BKN010 10 10 100% 75.97 0.0
19 07:35 Calm 14.48 Mostly Cloudy BKN010 9 9 100% 75.97 0.0
19 07:15 Calm 14.48 Fair CLR 9 9 100% 75.92 0.0
19 06:55 NE 9 14.48 A Few Clouds FEW010 9 9 100% 8 75.92 0.0
19 06:35 Calm 16.09 Mostly Cloudy BKN011 9 9 100% 75.9 0.0
19 06:15 E 7 16.09 Overcast OVC011 10 10 100% 9 75.92 0.0
19 05:55 Calm 14.48 Overcast OVC012 10 10 100% 75.92 0.0
19 05:35 E 11 16.09 Overcast OVC012 10 10 100% 9 75.92 0.0
19 05:15 E 6 16.09 Overcast OVC011 0 0 0% 75.92 0.0
19 04:55 Calm 16.09 Overcast OVC011 10 10 100% 75.92 0.0
19 04:35 NE 7 16.09 Overcast OVC011 10 10 100% 9 75.95 0.0
19 04:15 Calm 16.09 Overcast OVC011 10 10 100% 75.95 0.0
19 03:55 Vrbl 7 16.09 Overcast OVC011 10 10 100% 9 75.95 0.0
19 03:35 NE 7 16.09 Overcast OVC011 0 0 0% 75.95 0.0
19 03:15 NE 9 14.48 Overcast OVC009 9 9 100% 8 75.95 0.0
19 02:55 Calm 16.09 Overcast OVC008 9 9 100% 75.97 0.0
19 02:35 Calm 16.09 Mostly Cloudy BKN008 9 9 100% 75.97 0.0
19 02:15 NE 7 16.09 Overcast OVC008 9 9 100% 8 75.97 0.0
19 01:55 NE 6 16.09 Overcast OVC008 9 9 100% 75.97 0.0
19 01:35 Calm 16.09 Overcast OVC009 9 9 100% 76 0.0
19 01:15 Calm 16.09 Mostly Cloudy BKN010 9 9 100% 76 0.0
19 00:55 NE 7 16.09 Partly Cloudy SCT009 9 9 100% 8 76.02 0.0
19 00:35 Calm 16.09 Fair CLR 9 9 100% 76.05 0.0
19 00:15 Calm 16.09 A Few Clouds FEW008 0 0 0% 76.02 0.0
18 23:55 Calm 16.09 Partly Cloudy SCT008 10 10 100% 76.02 0.0
18 23:35 Calm 14.48 Fair CLR 10 10 100% 76.05 0.0
18 23:15 Calm 14.48 Fair CLR 11 11 100% 76.02 0.0
18 22:55 Calm 16.09 Fair CLR 11 11 100% 76.02 0.0
18 22:35 Calm 14.48 Fair CLR 11 11 100% 76.05 0.0
18 22:15 Calm 14.48 A Few Clouds FEW008 11 11 100% 76.05 0.0
18 21:55 E 6 14.48 Mostly Cloudy BKN009 12 12 100% 76.05 0.0
18 21:35 Calm 14.48 Mostly Cloudy BKN009 12 12 100% 76.05 0.0
18 21:15 Calm 14.48 Partly Cloudy SCT009 12 12 100% 76.05 0.0
18 20:55 Calm 14.48 Fair CLR 12 12 100% 76.05 0.0
18 20:35 Calm 12.87 Fair CLR 0 0 0% 76.02 0.0
18 20:15 Calm 12.87 Fair CLR 13 13 100% 76.02 0.0
18 19:55 Calm 11.27 Fair CLR 13 13 100% 76.02 0.0
18 19:35 Calm 11.27 Fair CLR 13 13 100% 76.02 0.0
18 19:15 W 7 9.66 Fog/Mist CLR 13 13 100% 76.02 0.0
18 18:55 W 7 12.87 Fair CLR 14 13 94% 76.02 0.0
18 18:35 W 6 12.87 Fair CLR 14 13 94% 76.02 0.0
18 18:15 W 9 14.48 Fair CLR 15 13 88% 76.05 0.0
18 17:55 Calm 14.48 Fair CLR 15 13 88% 76.05 0.0
18 17:35 W 7 14.48 Fair CLR 0 0 0% 76.05 0.0
18 17:15 W 7 14.48 Fair CLR 15 13 88% 76.05 0.0
18 16:55 W 9 12.87 Fair CLR 15 13 88% 76.07 0.0
18 16:35 NW 9 12.87 Fair CLR 15 13 88% 76.1 0.0
18 16:15 W 11 12.87 Fair CLR 15 14 94% 76.1 0.0
18 15:55 W 11 12.87 Fair CLR 15 14 94% 76.12 0.0
18 15:35 W 13 12.87 Fair CLR 15 13 88% 76.12 0.0
18 15:15 W 11 14.48 Fair CLR 16 13 83% 76.15 0.0
18 14:55 W 13 14.48 Fair CLR 16 14 88% 76.15 0.0
18 14:35 W 13 14.48 Fair CLR 16 13 83% 76.17 0.0
18 14:15 W 13 14.48 Fair CLR 16 13 83% 76.17 0.0
18 13:55 W 11 14.48 Fair CLR 16 13 83% 76.17 0.0
18 13:35 NW 11 14.48 Fair CLR 16 13 83% 76.17 0.0
18 13:15 NW 11 14.48 Fair CLR 16 13 83% 76.17 0.0
18 12:55 NW 11 11.27 Fair CLR 16 13 83% 76.2 0.0
18 12:35 NW 11 14.48 Fair CLR 16 13 83% 76.2 0.0
18 12:15 NW 15 12.87 Fair CLR 16 13 83% 76.2 0.0
18 11:55 NW 11 14.48 Fair CLR 15 13 88% 76.2 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)