Weather observations for the past three days for
Half Moon Bay Airport
Metric (Imperial)
Date Time (pst) 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.
04 01:55 E 22 12.87 Overcast OVC027 14 14 100% 76.28 0.0
04 01:35 E 19 11.27 Overcast OVC027 14 14 100% 76.28 0.0
04 01:15 NE 17 14.48 Overcast OVC028 14 14 100% 76.28 0.0
04 00:55 NE 9 14.48 Overcast BKN025 OVC029 14 14 100% 76.28 0.0
04 00:35 NE 6 14.48 Overcast OVC024 14 14 100% 76.28 0.0
04 00:15 Calm 14.48 Overcast BKN025 OVC029 14 14 100% 76.28 0.0
03 23:55 E 7 11.27 Overcast OVC029 14 14 100% 76.28 0.0
03 23:15 Calm 12.87 Overcast FEW026 OVC034 14 14 100% 76.28 0.0
03 22:55 SE 7 12.87 Overcast BKN029 OVC034 14 14 100% 76.28 0.0
03 22:35 Calm 11.27 Overcast FEW019 BKN030 OVC042 14 14 100% 76.28 0.0
03 22:15 Calm 11.27 Overcast FEW020 SCT025 OVC043 14 14 100% 76.28 0.0
03 21:55 E 9 8.05 Fog/Mist SCT014 BKN025 OVC042 14 14 100% 76.28 0.0 0.05
03 21:35 SE 6 3.22 Fog/Mist OVC013 14 14 100% 76.28 0.0
03 21:15 S 7 0.80 Fog OVC015 14 14 100% 76.28 0.0
03 20:55 Calm 1.21 Fog/Mist SCT010 OVC014 14 14 100% 76.28 0.0 0.25
03 20:35 E 6 1.21 Unknown Precip Fog/Mist BKN004 BKN009 OVC015 14 14 100% 76.28 0.0
03 20:15 SE 11 0.40 Rain Fog BKN004 OVC011 14 14 100% 76.25 0.0
03 19:55 SE 20 0.80 Light Rain Fog/Mist BKN004 BKN012 OVC017 14 14 100% 76.23 0.0 0.2
03 19:35 SE 11 1.21 Fog/Mist BKN016 OVC022 15 15 100% 76.23 0.0
03 19:15 SE 9 1.61 Fog/Mist SCT013 SCT021 OVC027 15 15 100% 76.23 0.0
03 18:55 SE 11 1.61 Fog/Mist SCT011 BKN022 OVC028 15 15 100% 76.23 0.0 0.08
03 18:35 S 15 G 24 1.61 Fog/Mist BKN014 BKN023 OVC029 15 15 100% 76.2 0.0
03 18:15 S 9 3.22 Fog/Mist FEW020 SCT026 BKN035 16 15 94% 76.2 0.0
03 17:55 SE 15 9.66 Fog/Mist FEW028 OVC035 16 15 94% 76.17 0.0
03 17:35 SE 17 9.66 Fog/Mist BKN038 OVC045 16 14 88% 76.17 0.0
03 17:15 SE 15 6.44 Fog/Mist FEW019 BKN044 OVC050 15 15 100% 76.17 0.0
03 16:55 S 20 9.66 Fog/Mist FEW034 BKN050 OVC070 16 16 100% 76.17 0.0
03 16:35 S 17 6.44 Fog/Mist SCT017 SCT026 BKN035 16 16 100% 76.17 0.0
03 16:15 SE 11 G 20 2.41 Fog/Mist BKN019 BKN026 OVC042 16 16 100% 76.2 0.0
03 15:55 S 19 6.44 Fog/Mist FEW019 BKN023 OVC042 17 15 88% 76.2 0.0
03 15:35 S 15 6.44 Overcast SCT021 BKN028 OVC050 0 0 0% 76.2 0.0
03 15:15 S 17 G 28 8.05 Mostly Cloudy with Haze SCT019 SCT029 BKN055 18 15 83% 76.2 0.0
03 14:55 S 17 8.05 Mostly Cloudy with Haze SCT018 SCT023 BKN048 18 15 83% 76.23 0.0
03 14:35 SW 7 8.05 Mostly Cloudy with Haze SCT020 SCT034 BKN050 18 15 83% 76.23 0.0
03 14:15 S 13 G 26 6.44 Mostly Cloudy with Haze SCT020 SCT032 BKN041 18 15 83% 76.2 0.0
03 13:55 S 13 8.05 Mostly Cloudy with Haze FEW019 SCT026 BKN046 18 15 83% 76.2 0.0
03 13:35 SW 15 8.05 Overcast with Haze FEW020 BKN025 OVC055 18 15 83% 76.23 0.0
03 13:15 SW 15 G 28 8.05 Mostly Cloudy with Haze BKN022 BKN026 BKN034 18 15 83% 76.23 0.0
03 12:55 Vrbl 9 8.05 Mostly Cloudy with Haze BKN019 BKN025 18 16 88% 76.23 0.0
03 12:35 SW 13 G 28 8.05 Fog/Mist SCT019 SCT047 18 16 88% 76.25 0.0
03 12:15 SW 13 G 22 9.66 Fog/Mist SCT020 BKN039 BKN047 17 16 94% 76.28 0.0
03 11:35 S 33 G 46 0.80 Fog/Mist and Breezy BKN014 BKN022 OVC029 15 15 100% 76.3 0.0
03 11:15 S 39 G 48 8.05 Fog/Mist and Breezy BKN017 BKN022 OVC029 15 15 100% 76.28 0.0
03 10:55 S 22 8.05 Fog/Mist OVC020 15 15 100% 76.28 0.0
03 10:35 SE 26 4.83 Fog/Mist SCT015 BKN022 BKN029 14 14 100% 76.28 0.0
03 10:15 S 28 3.22 Fog/Mist FEW014 SCT025 BKN032 14 14 100% 76.28 0.0
03 09:55 S 26 6.44 Fog/Mist SCT014 BKN026 BKN031 14 14 100% 76.28 0.0 0.03
03 09:35 SE 26 6.44 Fog/Mist FEW013 FEW023 BKN030 14 14 100% 76.3 0.0
03 09:15 SE 28 G 39 1.61 Fog/Mist SCT013 SCT023 BKN029 14 14 100% 76.3 0.0
03 08:55 S 31 1.21 Light Rain Fog/Mist BKN014 BKN021 OVC036 14 14 100% 76.33 0.0 0.1
03 08:35 S 30 2.01 Fog/Mist SCT021 BKN027 OVC035 14 14 100% 76.35 0.0
03 08:15 S 30 6.44 Fog/Mist BKN023 BKN028 OVC034 15 13 88% 76.33 0.0
03 07:55 S 26 9.66 Overcast with Haze OVC026 16 13 83% 76.3 0.0
03 07:35 S 26 8.05 Overcast with Haze BKN026 OVC033 15 13 88% 76.3 0.0
03 07:15 S 22 G 31 8.05 Fog/Mist SCT026 BKN034 OVC055 15 13 88% 76.3 0.0
03 06:55 S 24 G 39 11.27 Overcast SCT026 SCT048 OVC055 16 12 77% 76.3 0.0
03 06:35 S 22 12.87 Overcast SCT026 OVC060 15 12 82% 76.3 0.0
03 06:15 S 22 G 33 12.87 Overcast BKN065 BKN075 OVC085 15 12 82% 76.28 0.0
03 05:55 S 24 G 33 12.87 Mostly Cloudy FEW026 BKN080 BKN090 15 12 82% 76.3 0.0
03 05:35 S 17 12.87 Partly Cloudy FEW025 FEW030 SCT036 15 12 82% 76.33 0.0
03 05:15 S 20 12.87 Mostly Cloudy BKN037 15 11 77% 76.3 0.0
03 04:55 S 19 12.87 Overcast FEW025 OVC039 16 12 77% 76.33 0.0
03 04:35 S 19 14.48 Overcast FEW023 BKN035 OVC040 16 13 83% 76.35 0.0
03 04:15 S 20 G 30 14.48 Overcast FEW020 BKN031 OVC037 16 13 83% 76.33 0.0
03 03:55 SW 15 G 24 12.87 Overcast FEW020 OVC033 16 14 88% 76.33 0.0
03 03:35 Vrbl 11 G 31 12.87 Overcast FEW019 SCT026 OVC035 16 14 88% 76.33 0.0
03 02:55 Vrbl 9 12.87 Overcast SCT018 BKN027 OVC038 16 15 94% 76.33 0.0
03 02:35 SE 7 11.27 Overcast OVC017 14 13 94% 76.35 0.0
03 02:15 SE 7 11.27 Overcast BKN017 BKN021 OVC037 13 12 94% 76.35 0.0
03 01:55 Calm 12.87 Overcast SCT019 BKN025 OVC039 10 10 100% 76.38 0.0
03 01:35 Calm 12.87 Mostly Cloudy SCT023 BKN029 BKN034 10 10 100% 76.38 0.0
03 01:15 Calm 14.48 Mostly Cloudy SCT025 BKN033 10 10 100% 76.38 0.0
03 00:55 Calm 12.87 Overcast OVC023 9 9 100% 76.38 0.0
03 00:35 Calm 14.48 Mostly Cloudy BKN022 BKN029 8 8 100% 76.38 0.0
03 00:15 Calm 14.48 Partly Cloudy SCT021 SCT029 9 9 100% 76.35 0.0
02 23:55 NE 7 12.87 Fair CLR 10 10 100% 9 76.35 0.0
02 23:35 Calm 12.87 Fair CLR 11 11 100% 76.35 0.0
02 23:15 Calm 12.87 Fair CLR 12 11 94% 76.38 0.0
02 22:55 Calm 12.87 Fair CLR 11 11 100% 76.38 0.0
02 22:35 Calm 12.87 Fair CLR 11 11 100% 76.43 0.0
02 22:15 Calm 9.66 A Few Clouds FEW003 0 0 0% 76.43 0.0
02 21:55 Calm 9.66 Fog/Mist BKN003 12 12 100% 76.4 0.0
02 21:35 N 9 12.87 Partly Cloudy SCT003 12 12 100% 76.4 0.0
02 21:15 NW 7 12.87 Fair CLR 12 12 100% 76.38 0.0
02 20:55 Calm 14.48 Fair CLR 12 12 100% 76.35 0.0
02 20:35 Calm 12.87 Fair CLR 0 0 0% 76.43 0.0
02 20:15 Calm 12.87 Fair CLR 12 12 100% 76.45 0.0
02 19:55 NW 6 12.87 Fair CLR 12 12 100% 76.5 0.0
02 19:35 Calm 12.87 Fair CLR 12 12 100% 76.45 0.0
02 19:15 E 7 14.48 Fair CLR 12 12 100% 76.53 0.0
02 18:55 Calm 12.87 Fair CLR 12 12 100% 76.56 0.0
02 18:35 Calm 11.27 Fair CLR 12 12 100% 76.56 0.0
02 18:15 Calm 11.27 Fair CLR 13 13 100% 76.56 0.0
02 17:55 NE 7 11.27 Fair CLR 13 13 100% 76.53 0.0
02 17:35 Calm 11.27 A Few Clouds FEW003 14 13 94% 76.53 0.0
02 17:15 N 6 8.05 Fog/Mist CLR 16 14 88% 76.5 0.0
02 16:55 NW 9 8.05 Fair with Haze CLR 16 14 88% 76.53 0.0
02 16:35 NW 9 6.44 Fair with Haze CLR 16 13 83% 76.56 0.0
02 16:15 NW 7 8.05 Fair with Haze CLR 17 13 77% 76.53 0.0
02 15:55 NW 11 8.05 Fair with Haze CLR 17 13 77% 76.5 0.0
02 15:35 NW 11 6.44 Fair with Haze CLR 17 14 83% 76.5 0.0
02 15:15 Calm 9.66 Fair with Haze CLR 18 12 68% 76.48 0.0
02 14:55 NE 13 11.27 Fair CLR 17 13 77% 76.48 0.0
02 14:35 W 9 6.44 Fair with Haze CLR 17 13 77% 76.56 0.0
02 14:15 Calm 6.44 Fair with Haze CLR 17 12 73% 76.53 0.0
02 13:55 Calm 9.66 Fair with Haze CLR 17 12 73% 76.56 0.0
02 13:35 W 6 9.66 Fair with Haze CLR 17 12 73% 76.56 0.0
02 13:15 W 7 9.66 Fair with Haze CLR 17 12 73% 76.58 0.0
02 12:55 Vrbl 9 11.27 Fair CLR 18 12 68% 76.58 0.0
02 12:35 SW 13 11.27 Fair CLR 18 12 68% 76.61 0.0
02 12:15 S 6 12.87 Fair CLR 0 0 0% 76.58 0.0
02 11:55 S 7 12.87 Fair CLR 17 12 73% 76.66 0.0
02 11:35 S 7 12.87 Fair CLR 17 12 73% 76.68 0.0
02 11:15 S 13 12.87 Fair CLR 18 10 60% 76.71 0.0
02 10:55 SE 13 14.48 Fair CLR 17 10 64% 76.68 0.0
02 10:35 S 7 12.87 Fair CLR 17 11 68% 76.66 0.0
02 10:15 Calm 11.27 Fair CLR 16 12 77% 76.63 0.0
02 09:55 Calm 11.27 Fair CLR 16 13 83% 76.63 0.0
02 09:35 SE 7 12.87 Fair CLR 0 0 0% 76.63 0.0
02 09:15 Calm 9.66 Fair with Haze CLR 16 13 83% 76.66 0.0
02 08:55 Calm 11.27 Fair CLR 16 12 77% 76.66 0.0
02 08:35 Calm 12.87 Fair CLR 0 0 0% 76.66 0.0
02 08:15 Calm 12.87 Fair CLR 14 13 94% 76.68 0.0
02 07:55 Calm 11.27 Fair CLR 12 12 100% 76.66 0.0
02 07:35 NE 7 12.87 Fair CLR 10 10 100% 9 76.66 0.0
02 07:15 Calm 12.87 Fair CLR 0 0 0% 76.66 0.0
02 06:55 NE 6 12.87 Fair CLR 7 7 100% 76.63 0.0
02 06:35 NE 7 14.48 Fair CLR 8 8 100% 7 76.61 0.0
02 06:15 NE 7 14.48 Fair CLR 8 8 100% 7 76.61 0.0
02 05:55 Calm 14.48 Fair CLR 8 8 100% 76.61 0.0
02 05:35 Calm 14.48 Fair CLR 7 7 100% 76.58 0.0
02 05:15 Calm 12.87 Fair CLR 9 9 100% 76.53 0.0
02 04:55 Calm 14.48 Fair CLR 8 8 100% 76.5 0.0
02 04:35 Calm 14.48 Fair CLR 8 8 100% 76.53 0.0
02 04:15 NE 7 14.48 Fair CLR 9 9 100% 8 76.5 0.0
02 03:55 Calm 14.48 Fair CLR 8 8 100% 76.48 0.0
02 03:35 Calm 12.87 Fair CLR 9 9 100% 76.45 0.0
02 03:15 Calm 12.87 Fair CLR 8 8 100% 76.48 0.0
02 02:55 Calm 12.87 Fair CLR 8 8 100% 76.48 0.0
02 02:35 Calm 12.87 Fair CLR 7 7 100% 76.48 0.0
02 02:15 Calm 12.87 Fair CLR 7 7 100% 76.45 0.0
02 01:55 NE 9 11.27 Fair CLR 8 8 100% 7 76.45 0.0
02 01:35 Calm 11.27 Fair CLR 8 8 100% 76.45 0.0
02 01:15 NE 6 11.27 Fair CLR 8 8 100% 76.5 0.0
02 00:55 Calm 11.27 Fair CLR 10 10 100% 76.5 0.0
02 00:35 NE 9 12.87 Fair CLR 9 9 100% 8 76.53 0.0
02 00:15 NE 11 11.27 Partly Cloudy SCT016 9 9 100% 8 76.53 0.0
01 23:55 NE 6 11.27 Mostly Cloudy BKN016 8 8 100% 76.53 0.0
01 23:35 E 6 11.27 Partly Cloudy SCT016 9 9 100% 76.53 0.0
01 23:15 Calm 12.87 Fair CLR 8 8 100% 76.53 0.0
01 22:55 Calm 11.27 Fair CLR 8 8 100% 76.5 0.0
01 22:35 NE 7 14.48 A Few Clouds FEW016 9 9 100% 8 76.5 0.0
01 22:15 Calm 14.48 A Few Clouds FEW018 9 9 100% 76.5 0.0
01 21:55 NE 6 12.87 Partly Cloudy SCT019 9 9 100% 76.48 0.0
01 21:35 Calm 14.48 A Few Clouds FEW018 10 10 100% 76.45 0.0
01 21:15 Calm 12.87 Fair CLR 9 9 100% 76.43 0.0
01 20:55 Calm 12.87 Fair CLR 9 9 100% 76.43 0.0
01 20:35 Calm 11.27 Fair CLR 9 9 100% 76.4 0.0
01 20:15 Calm 14.48 Fair CLR 10 10 100% 76.38 0.0
01 19:55 NE 6 12.87 Fair CLR 10 10 100% 76.38 0.0
01 19:35 Calm 12.87 Fair CLR 12 12 100% 76.38 0.0
01 19:15 Calm 12.87 Fair CLR 13 12 94% 76.35 0.0
01 18:55 NE 9 12.87 Fair CLR 13 12 94% 76.33 0.0
01 18:35 N 9 14.48 Fair CLR 13 12 94% 76.33 0.0
01 18:15 N 9 12.87 Fair CLR 14 12 88% 76.3 0.0
01 17:55 N 9 12.87 Fair CLR 15 12 82% 76.3 0.0
01 17:35 N 11 G 24 14.48 Fair CLR 15 12 82% 76.28 0.0
01 17:15 N 17 9.66 Fair with Haze CLR 15 12 82% 76.25 0.0
01 16:55 N 13 G 24 12.87 Fair CLR 16 12 77% 76.23 0.0
01 16:35 NW 20 11.27 A Few Clouds FEW026 FEW031 16 12 77% 76.25 0.0
01 16:15 NW 15 12.87 Fair CLR 17 11 68% 76.23 0.0
01 15:55 NW 15 14.48 Fair CLR 17 10 64% 76.2 0.0
01 15:35 NW 15 11.27 Fair CLR 0 0 0% 76.17 0.0
01 15:15 NW 13 14.48 Fair CLR 17 10 64% 76.15 0.0
01 14:55 NW 17 12.87 Fair CLR 17 10 64% 76.15 0.0
01 14:35 NW 19 12.87 Fair CLR 17 10 64% 76.12 0.0
01 14:15 NW 19 14.48 Fair CLR 17 8 56% 76.1 0.0
01 13:55 NW 24 12.87 Fair CLR 17 9 60% 76.07 0.0
01 13:35 NW 24 14.48 Fair CLR 0 0 0% 76.07 0.0
01 13:15 N 19 12.87 Fair CLR 17 9 60% 76.07 0.0
01 12:55 N 20 14.48 Fair CLR 17 10 64% 76.07 0.0
01 12:35 NW 20 14.48 Fair CLR 17 10 64% 76.07 0.0
01 12:15 NW 22 12.87 Fair CLR 16 10 68% 76.07 0.0
01 11:55 NW 19 12.87 Fair CLR 16 9 63% 76.07 0.0
01 11:35 NW 20 12.87 Fair CLR 0 0 0% 76.1 0.0
01 11:15 NW 17 14.48 Fair CLR 16 10 68% 76.07 0.0
01 10:55 NW 17 14.48 Fair CLR 15 10 72% 76.07 0.0
01 10:35 NW 15 14.48 Fair CLR 15 12 82% 76.07 0.0
01 10:15 NW 19 14.48 Fair CLR 15 12 82% 76.07 0.0
01 09:55 NW 17 12.87 Fair CLR 15 12 82% 76.05 0.0
01 09:35 NW 13 14.48 Fair CLR 15 12 82% 76.02 0.0
01 09:15 N 11 14.48 Fair CLR 14 12 88% 76.02 0.0
01 08:55 N 9 14.48 Fair CLR 0 0 0% 76 0.0
01 08:35 Calm 12.87 Fair CLR 13 12 94% 76 0.0
01 08:15 Calm 14.48 Fair CLR 12 12 100% 76 0.0
01 07:55 Calm 14.48 Fair CLR 11 11 100% 75.97 0.0
01 07:35 Calm 14.48 Fair CLR 10 10 100% 75.95 0.0
01 07:15 Calm 14.48 Fair CLR 8 8 100% 75.92 0.0
01 06:55 NE 6 12.87 Fair CLR 8 8 100% 75.9 0.0
01 06:35 Calm 14.48 Fair CLR 8 8 100% 75.87 0.0
01 06:15 N 6 14.48 Fair CLR 8 8 100% 75.84 0.0
01 05:55 NE 6 1.61 Fog/Mist CLR 8 8 100% 75.84 0.0 0.03
01 05:35 Calm 4.83 Fog/Mist FEW034 9 9 100% 75.84 0.0
01 05:15 Calm 14.48 Mostly Cloudy FEW026 BKN037 BKN070 10 10 100% 75.82 0.0
01 04:55 N 9 11.27 Mostly Cloudy FEW024 SCT028 BKN042 10 10 100% 9 75.82 0.0 0.03
01 04:35 Calm 14.48 Partly Cloudy SCT031 SCT065 10 10 100% 75.77 0.0
01 04:15 Calm 14.48 Mostly Cloudy FEW021 FEW027 BKN060 0 0 0% 75.77 0.0
01 03:55 NE 6 14.48 Mostly Cloudy BKN019 BKN023 BKN050 11 11 100% 75.77 0.0
01 03:35 NE 6 14.48 Overcast OVC020 11 11 100% 75.77 0.0
01 03:15 NE 11 14.48 Overcast OVC020 11 11 100% 75.74 0.0
01 02:55 NE 6 14.48 Overcast OVC022 11 11 100% 75.77 0.0
01 02:15 Vrbl 6 14.48 Mostly Cloudy FEW031 SCT060 BKN075 10 10 100% 75.77 0.0
Date Time (pst) 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)