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.
01 11:15 SW 7 2.82 Fog/Mist OVC004 14 14 100% 75.97 0.0
01 10:55 Vrbl 9 4.83 Fog/Mist OVC004 14 14 100% 75.97 0.0
01 10:35 S 7 4.02 Fog/Mist BKN004 13 13 100% 75.97 0.0
01 10:15 S 11 12.87 Mostly Cloudy BKN004 13 13 100% 75.97 0.0
01 09:55 S 9 2.82 Overcast OVC002 0 0 0% 75.97 0.0
01 09:35 Calm 0.24 Fog OVC002 0 0 0% 75.97 0.0
01 09:15 S 6 0.24 Fog OVC002 13 13 100% 75.95 0.0
01 08:55 Calm 0.24 Fog OVC002 12 12 100% 75.95 0.0
01 08:35 Calm 0.24 Overcast OVC002 0 0 0% 75.9 0.0
01 08:15 Calm 0.24 Fog OVC002 11 11 100% 75.9 0.0
01 07:35 SE 7 0.24 Fog OVC002 12 12 100% 75.9 0.0
01 07:15 E 6 0.24 Fog OVC002 11 11 100% 75.87 0.0
01 06:55 E 6 0.40 Fog OVC002 11 11 100% 75.9 0.0
01 06:35 SE 7 0.80 Fog/Mist OVC002 12 12 100% 75.87 0.0
01 06:15 E 7 1.61 Fog/Mist OVC002 11 11 100% 75.87 0.0
01 05:55 E 7 0.80 Fog OVC002 11 11 100% 75.87 0.0
01 05:35 E 7 0.40 Fog OVC002 11 11 100% 75.84 0.0
01 05:15 E 9 0.40 Fog OVC002 11 11 100% 75.82 0.0
01 04:55 Vrbl 6 0.80 Fog OVC002 11 11 100% 75.82 0.0
01 04:35 E 7 0.80 Fog/Mist OVC002 11 11 100% 75.82 0.0
01 04:15 E 7 1.21 Fog/Mist OVC002 11 11 100% 75.82 0.0
01 03:55 E 6 0.80 Fog OVC002 11 11 100% 75.82 0.0
01 03:35 E 6 0.40 Fog OVC002 11 11 100% 75.82 0.0
01 03:15 E 7 0.40 Fog OVC002 11 11 100% 75.82 0.0
01 02:55 E 9 0.40 Fog OVC002 11 11 100% 75.82 0.0
01 02:35 E 6 0.40 Fog OVC002 11 11 100% 75.82 0.0
01 02:15 NE 7 0.80 Fog OVC002 11 11 100% 75.82 0.0
01 01:55 Calm 0.80 Fog OVC002 12 12 100% 75.82 0.0
01 01:35 E 6 0.40 Fog OVC002 12 12 100% 75.82 0.0
01 01:15 E 7 0.40 Fog OVC002 12 12 100% 75.84 0.0
01 00:55 E 9 0.40 Fog OVC002 12 12 100% 75.84 0.0
01 00:35 NE 7 0.80 Fog OVC002 12 12 100% 75.87 0.0
01 00:15 NE 6 0.80 Fog/Mist OVC002 12 12 100% 75.87 0.0
30 23:35 E 6 2.01 Fog/Mist OVC002 13 13 100% 75.87 0.0
30 23:15 E 6 3.22 Fog/Mist OVC003 13 13 100% 75.87 0.0
30 22:55 Calm 4.02 Fog/Mist OVC003 13 13 100% 75.87 0.0
30 22:35 Calm 4.02 Fog/Mist OVC003 13 13 100% 75.87 0.0
30 22:15 Calm 2.82 Fog/Mist OVC003 13 13 100% 75.87 0.0
30 21:55 N 7 4.02 Fog/Mist OVC003 13 13 100% 75.87 0.0
30 21:35 Vrbl 6 1.61 Overcast OVC002 0 0 0% 75.84 0.0
30 21:15 NW 9 1.61 Fog/Mist OVC002 13 13 100% 75.84 0.0
30 20:15 NW 9 2.01 Fog/Mist OVC002 13 13 100% 75.79 0.0
30 19:55 NW 9 0.80 Overcast OVC002 0 0 0% 75.79 0.0
30 19:35 NW 11 1.21 Fog/Mist OVC002 14 14 100% 75.79 0.0
30 19:15 N 9 2.01 Fog/Mist OVC002 14 14 100% 75.77 0.0
30 18:55 N 11 0.80 Fog OVC002 14 14 100% 75.77 0.0
30 18:35 N 13 0.80 Fog/Mist OVC003 14 14 100% 75.74 0.0
30 18:15 NW 13 0.40 Fog OVC003 14 14 100% 75.74 0.0
30 17:55 NW 17 1.21 Fog/Mist OVC003 14 14 100% 75.74 0.0
30 17:35 NW 13 4.02 Fog/Mist OVC003 15 15 100% 75.72 0.0
30 17:15 NW 15 4.02 Fog/Mist OVC003 15 15 100% 75.74 0.0
30 16:55 NW 15 6.44 Fog/Mist BKN003 15 15 100% 75.74 0.0
30 16:35 NW 15 1.21 Fog/Mist OVC003 15 15 100% 75.74 0.0
30 16:15 NW 13 3.22 Fog/Mist BKN003 15 15 100% 75.74 0.0
30 15:55 NW 11 4.02 Fog/Mist FEW004 16 15 94% 75.74 0.0
30 15:35 NW 11 9.66 Fog/Mist SCT004 16 15 94% 75.74 0.0
30 15:15 NW 17 4.83 Fog/Mist BKN003 16 15 94% 75.74 0.0
30 14:55 NW 13 4.02 Fog/Mist SCT003 16 15 94% 75.74 0.0
30 14:35 W 13 9.66 Fog/Mist CLR 16 15 94% 75.77 0.0
30 14:15 W 11 6.44 Fog/Mist FEW004 16 15 94% 75.77 0.0
30 13:55 NW 11 6.44 Fog/Mist FEW004 16 15 94% 75.79 0.0
30 13:35 NW 13 4.83 Fog/Mist CLR 16 15 94% 75.79 0.0
30 13:15 NW 9 4.83 Fog/Mist CLR 16 15 94% 75.82 0.0
30 12:55 W 15 6.44 Fog/Mist CLR 16 15 94% 75.82 0.0
30 12:35 W 11 4.83 Fog/Mist CLR 17 15 88% 75.82 0.0
30 12:15 W 11 4.83 Fog/Mist CLR 17 15 88% 75.82 0.0
30 11:55 NW 9 4.83 Fog/Mist CLR 17 15 88% 75.84 0.0
30 11:35 W 11 4.83 Fog/Mist CLR 17 15 88% 75.82 0.0
30 11:15 Vrbl 11 4.83 Fog/Mist CLR 17 15 88% 75.84 0.0
30 10:55 SW 11 4.83 Fog/Mist CLR 17 15 88% 75.84 0.0
30 10:35 S 13 4.83 Fog/Mist CLR 17 15 88% 75.82 0.0
30 10:15 S 11 4.83 Fog/Mist CLR 17 15 88% 75.82 0.0
30 09:55 Vrbl 9 4.83 Fog/Mist CLR 17 15 88% 75.82 0.0
30 09:35 S 13 4.83 Fog/Mist CLR 16 15 94% 75.79 0.0
30 09:15 S 15 4.02 Fog/Mist CLR 15 15 100% 75.79 0.0
30 08:55 S 11 4.02 Fog/Mist CLR 15 15 100% 75.77 0.0
30 08:35 S 7 4.83 Fog/Mist CLR 14 14 100% 75.77 0.0
30 08:15 Calm 4.83 Fog/Mist CLR 12 12 100% 75.77 0.0
30 07:55 Calm 4.83 Fog/Mist CLR 10 10 100% 75.74 0.0
30 07:35 Calm 4.83 Fog/Mist CLR 9 9 100% 75.72 0.0
30 07:15 Calm 4.83 Fog/Mist CLR 9 9 100% 75.72 0.0
30 06:55 Calm 8.05 Fair CLR 0 0 0% 75.69 0.0
30 06:35 Calm 8.05 Fog/Mist CLR 9 9 100% 75.69 0.0
30 05:55 Calm 6.44 Fog/Mist CLR 10 10 100% 75.64 0.0
30 05:35 Calm 8.05 Fog/Mist CLR 9 9 100% 75.64 0.0
30 05:15 Calm 6.44 Fog/Mist CLR 9 9 100% 75.62 0.0
30 04:55 Calm 6.44 Fog/Mist CLR 9 9 100% 75.62 0.0
30 04:35 Calm 6.44 Fog/Mist CLR 10 10 100% 75.62 0.0
30 04:15 Calm 8.05 Fog/Mist CLR 10 10 100% 75.62 0.0
30 03:55 NE 6 6.44 Fog/Mist CLR 9 9 100% 75.64 0.0
30 03:15 Calm 8.05 Fog/Mist CLR 10 10 100% 75.64 0.0
30 02:55 Calm 6.44 Fog/Mist CLR 10 10 100% 75.64 0.0
30 02:35 Calm 8.05 Fog/Mist CLR 10 10 100% 75.64 0.0
30 02:15 Calm 8.05 Fog/Mist CLR 10 10 100% 75.64 0.0
30 01:55 Calm 8.05 Fog/Mist CLR 10 10 100% 75.64 0.0
30 01:35 NE 6 8.05 Fog/Mist CLR 10 10 100% 75.64 0.0
30 01:15 Calm 8.05 Fog/Mist CLR 10 10 100% 75.64 0.0
30 00:55 Calm 8.05 Fog/Mist CLR 10 10 100% 75.64 0.0
30 00:35 Calm 8.05 Fog/Mist CLR 10 10 100% 75.64 0.0
30 00:15 Calm 8.05 Fog/Mist CLR 10 10 100% 75.64 0.0
29 23:55 Calm 8.05 Fog/Mist CLR 11 11 100% 75.64 0.0
29 23:35 Calm 8.05 Fog/Mist CLR 11 11 100% 75.64 0.0
29 23:15 Calm 8.05 Fog/Mist CLR 11 11 100% 75.62 0.0
29 22:55 Calm 8.05 Fog/Mist CLR 11 11 100% 75.62 0.0
29 22:35 Calm 8.05 Fog/Mist CLR 11 11 100% 75.62 0.0
29 22:15 NE 6 8.05 Fog/Mist CLR 12 11 94% 75.62 0.0
29 21:55 Calm 8.05 Fog/Mist CLR 11 11 100% 75.62 0.0
29 21:35 Calm 8.05 Fog/Mist CLR 12 12 100% 75.64 0.0
29 21:15 Calm 8.05 Fog/Mist CLR 12 12 100% 75.64 0.0
29 20:55 Calm 6.44 Fog/Mist CLR 13 13 100% 75.64 0.0
29 20:35 Calm 8.05 Fog/Mist CLR 13 12 94% 75.62 0.0
29 20:15 Calm 6.44 Fog/Mist CLR 14 13 94% 75.62 0.0
29 19:55 Calm 6.44 NULL NULL 0 0 0% 75.62 0.0
29 19:35 Calm 0.00 NULL NULL 15 14 94% 75.62 0.0
29 19:15 W 7 4.83 Fog/Mist NULL 15 14 94% 75.62 0.0
29 18:55 W 9 0.00 NULL NULL 0 0 0% 75.62 0.0
29 18:35 W 9 4.83 Fair with Haze CLR 16 14 88% 75.62 0.0
29 18:15 NW 15 6.44 Fair with Haze CLR 17 13 77% 75.62 0.0
29 17:55 NW 15 6.44 Fair with Haze CLR 17 13 77% 75.62 0.0
29 17:35 NW 17 6.44 Fair with Haze CLR 18 13 73% 75.59 0.0
29 17:15 NW 17 6.44 Fair with Haze CLR 18 13 73% 75.62 0.0
29 16:55 NW 17 6.44 Fair with Haze CLR 19 13 68% 75.62 0.0
29 16:35 NW 20 6.44 Fair with Haze CLR 19 13 68% 75.62 0.0
29 16:15 NW 24 6.44 Fair with Haze CLR 19 14 73% 75.62 0.0
29 15:55 NW 19 G 31 6.44 Fair with Haze CLR 19 14 73% 75.62 0.0
29 15:35 NW 24 4.83 Fair with Haze CLR 18 14 78% 75.64 0.0
29 15:15 NW 26 6.44 Fair with Haze CLR 18 14 78% 75.64 0.0
29 14:55 NW 24 6.44 Fair with Haze CLR 19 14 73% 75.64 0.0
29 14:35 NW 20 6.44 Fair with Haze CLR 19 14 73% 75.67 0.0
29 14:15 NW 20 6.44 Fair with Haze CLR 19 14 73% 75.69 0.0
29 13:55 NW 19 4.83 Fair with Haze CLR 18 14 78% 75.69 0.0
29 13:35 NW 20 4.83 Fair with Haze CLR 18 15 83% 75.72 0.0
29 13:15 NW 19 4.83 Fair with Haze CLR 18 15 83% 75.74 0.0
29 12:55 NW 19 4.83 Fair with Haze CLR 19 15 78% 75.77 0.0
29 12:35 NW 20 4.83 Fair with Haze CLR 18 15 83% 75.79 0.0
29 12:15 NW 17 4.83 Fair with Haze CLR 18 15 83% 75.79 0.0
29 11:55 NW 17 4.83 Fair with Haze CLR 18 15 83% 75.79 0.0
29 11:35 NW 19 4.02 Fog/Mist CLR 17 15 88% 75.82 0.0
29 11:15 NW 19 4.83 Fog/Mist CLR 17 15 88% 75.82 0.0
29 10:55 NW 15 4.83 Fog/Mist CLR 17 16 94% 75.82 0.0
29 10:35 NW 13 4.83 Fog/Mist CLR 17 16 94% 75.82 0.0
29 10:15 NW 13 4.83 Fog/Mist CLR 17 16 94% 75.82 0.0
29 09:55 NW 11 4.83 Fog/Mist CLR 17 15 88% 75.82 0.0
29 09:35 NW 7 4.02 Fog/Mist CLR 16 16 100% 75.79 0.0
29 09:15 NW 9 3.22 Fog/Mist BKN005 15 15 100% 75.82 0.0
29 08:55 N 11 2.82 Fog/Mist OVC004 14 14 100% 75.82 0.0
29 08:35 Calm 2.41 Fog/Mist OVC005 13 13 100% 75.82 0.0
29 08:15 Calm 0.40 Fog BKN002 OVC006 13 13 100% 75.82 0.0
29 07:55 Calm 0.80 Overcast OVC002 0 0 0% 75.82 0.0
29 07:35 Calm 3.22 Fog/Mist OVC003 10 10 100% 75.82 0.0
29 07:15 Calm 2.82 Fog/Mist OVC005 9 9 100% 75.82 0.0
29 06:55 Calm 4.83 Fog/Mist OVC005 9 9 100% 75.82 0.0
29 06:35 Calm 6.44 Fog/Mist OVC003 8 8 100% 75.82 0.0
29 06:15 Calm 4.83 Fog/Mist OVC004 8 8 100% 75.79 0.0
29 05:55 Calm 8.05 Fog/Mist OVC004 8 8 100% 75.79 0.0
29 05:35 Calm 6.44 Fog/Mist OVC005 8 8 100% 75.82 0.0
29 05:15 Calm 8.05 Fog/Mist OVC007 8 8 100% 75.82 0.0
29 04:55 Calm 0.80 Fog/Mist OVC007 8 8 100% 75.82 0.0
29 04:35 Calm 6.44 Fog/Mist OVC006 9 9 100% 75.82 0.0
29 04:15 Calm 8.05 Fog/Mist OVC006 8 8 100% 75.79 0.0
29 03:55 NE 6 6.44 Fog/Mist BKN006 9 9 100% 75.82 0.0
29 03:35 Calm 6.44 Fog/Mist SCT007 9 9 100% 75.82 0.0
29 03:15 Calm 6.44 Fog/Mist CLR 9 9 100% 75.82 0.0
29 02:35 NE 6 6.44 Fog/Mist CLR 9 9 100% 75.84 0.0
29 02:15 Calm 6.44 Fog/Mist CLR 10 10 100% 75.87 0.0
29 01:55 NE 6 6.44 Fog/Mist CLR 9 9 100% 75.9 0.0
29 01:35 Calm 6.44 Fog/Mist CLR 10 10 100% 75.9 0.0
29 01:15 Calm 6.44 Fog/Mist CLR 10 10 100% 75.9 0.0
29 00:55 Calm 8.05 Fog/Mist CLR 9 9 100% 75.9 0.0
29 00:35 Calm 8.05 Fog/Mist CLR 10 10 100% 75.9 0.0
29 00:15 Calm 8.05 Fog/Mist CLR 10 10 100% 75.92 0.0
28 23:55 Calm 6.44 Fog/Mist CLR 10 10 100% 75.9 0.0
28 23:35 Calm 6.44 Partly Cloudy SCT010 0 0 0% 75.9 0.0
28 23:15 Calm 6.44 Fog/Mist SCT010 11 11 100% 75.92 0.0
28 22:55 NE 6 8.05 Fog/Mist FEW010 11 11 100% 75.92 0.0
28 22:35 Calm 8.05 Fog/Mist BKN010 12 12 100% 75.92 0.0
28 22:15 E 7 8.05 Fog/Mist BKN011 12 12 100% 75.92 0.0
28 21:55 Calm 6.44 Fog/Mist BKN011 13 13 100% 75.92 0.0
28 21:35 Calm 6.44 Fog/Mist OVC012 14 14 100% 75.92 0.0
28 21:15 Calm 6.44 Fog/Mist OVC012 14 14 100% 75.95 0.0
28 20:55 Calm 6.44 Fog/Mist OVC012 14 14 100% 75.95 0.0
28 20:35 Vrbl 7 6.44 Fog/Mist OVC012 14 14 100% 75.92 0.0
28 20:15 Calm 6.44 Fog/Mist OVC011 0 0 0% 0 0.0
28 19:55 NW 7 6.44 Fog/Mist OVC010 14 14 100% 75.95 0.0
28 19:35 NW 7 6.44 Fog/Mist OVC010 14 14 100% 75.95 0.0
28 19:15 NW 15 G 24 6.44 Fog/Mist OVC010 14 14 100% 75.95 0.0
28 18:55 NW 17 4.83 Fog/Mist OVC010 14 14 100% 75.95 0.0
28 18:35 NW 17 4.83 Fog/Mist OVC010 14 14 100% 75.95 0.0
28 18:15 N 15 G 28 4.83 Fog/Mist OVC010 14 14 100% 75.95 0.0
28 17:55 NW 19 4.83 Fog/Mist OVC010 15 14 94% 75.95 0.0
28 17:35 NW 20 6.44 Overcast OVC012 0 0 0% 75.95 0.0
28 17:15 NW 20 6.44 Fog/Mist BKN010 15 14 94% 75.95 0.0
28 16:55 NW 17 G 28 6.44 Fog/Mist BKN011 15 14 94% 75.97 0.0
28 16:35 NW 19 G 31 6.44 Fog/Mist BKN012 15 14 94% 75.97 0.0
28 16:15 NW 26 6.44 Fog/Mist BKN012 15 14 94% 76 0.0
28 15:55 N 20 6.44 Fog/Mist OVC012 16 14 88% 76 0.0
28 15:35 NW 20 8.05 Fog/Mist BKN013 16 14 88% 76.02 0.0
28 15:15 NW 24 G 33 6.44 Partly Cloudy with Haze SCT013 17 14 83% 76.02 0.0
28 14:55 NW 28 8.05 Fair with Haze CLR 16 14 88% 76.05 0.0
28 14:35 NW 20 8.05 Fair with Haze CLR 16 14 88% 76.05 0.0
28 14:15 NW 17 8.05 Fair with Haze CLR 16 13 83% 76.05 0.0
28 13:55 NW 19 6.44 Fair with Haze CLR 16 14 88% 76.07 0.0
28 13:35 W 13 8.05 Fair with Haze CLR 16 14 88% 76.07 0.0
28 13:15 W 15 8.05 Fair with Haze CLR 16 13 83% 76.1 0.0
28 12:55 W 15 8.05 Fair with Haze CLR 16 13 83% 76.12 0.0
28 12:35 W 13 8.05 Fair with Haze CLR 16 13 83% 76.12 0.0
28 12:15 SW 11 6.44 A Few Clouds with Haze FEW013 16 13 83% 76.12 0.0
28 11:55 W 13 8.05 Mostly Cloudy with Haze BKN013 16 13 83% 76.12 0.0
28 11:35 Vrbl 11 8.05 Overcast with Haze OVC014 16 13 83% 76.12 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)