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 05:22 NE 7 1.21 Fog/Mist OVC002 9 9 100% 8 75.95 0.0
21 05:02 E 6 16.09 Fog OVC002 10 10 100% 0 0.0
21 04:41 SE 6 0.80 Fog OVC002 10 10 100% 75.95 0.0
21 04:22 Calm 0.40 Fog OVC002 10 10 100% 75.95 0.0
21 04:02 SE 7 0.40 Fog OVC002 10 10 100% 9 75.95 0.0
21 03:44 Vrbl 6 0.40 Fog OVC002 10 10 100% 75.95 0.0
21 03:24 SE 9 0.40 Fog OVC002 10 10 100% 9 75.97 0.0
21 02:49 Vrbl 6 0.40 Fog OVC002 10 10 100% 0 0.0
21 02:07 E 6 3.22 Overcast OVC004 0 0 0% 76 0.0
21 01:45 E 6 4.02 Fog/Mist OVC004 10 10 100% 76.02 0.0
21 01:30 Calm 4.83 Fog/Mist OVC004 1 1 100% 76 0.0
21 01:06 Calm 6.44 Fog/Mist OVC004 10 10 100% 76 0.0
21 00:47 Calm 9.66 Fog/Mist OVC005 10 10 100% 76 0.0
21 00:25 Calm 8.05 Fog/Mist OVC006 9 9 100% 76 0.0
21 00:07 Calm 8.05 Overcast OVC006 9 9 100% 76.02 0.0
20 23:47 Calm 9.66 Fog/Mist OVC006 9 9 100% 76.02 0.0
20 23:27 Calm 8.05 Fog/Mist BKN005 9 9 100% 76.02 0.0
20 23:07 Calm 8.05 Fog/Mist OVC005 9 9 100% 76 0.0
20 22:46 Calm 6.44 Fog/Mist OVC006 10 10 100% 76.02 0.0
20 22:25 Calm 6.44 Fog/Mist OVC005 10 10 100% 0 0.0
20 22:06 N 6 6.44 Fog/Mist OVC006 10 10 100% 76.02 0.0
20 21:47 N 7 6.44 Fog/Mist OVC006 10 10 100% 9 76 0.0
20 21:26 N 6 6.44 Fog/Mist SCT005 11 11 100% 76 0.0
20 21:05 NW 7 6.44 Fog/Mist FEW005 11 11 100% 76 0.0
20 20:45 Calm 6.44 Fog/Mist FEW006 11 11 100% 75.97 0.0
20 20:26 NW 6 4.83 Fog/Mist SCT006 11 11 100% 75.97 0.0
20 20:05 NW 11 4.83 Fog/Mist CLR 11 11 100% 75.97 0.0
20 19:36 NW 11 4.83 Fog/Mist CLR 12 12 100% 75.97 0.0
20 19:02 NW 15 4.83 Fog/Mist CLR 12 12 100% 76 0.0
20 18:42 W 11 4.83 Fog/Mist CLR 13 12 94% 76 0.0
20 18:22 NW 15 4.83 Fog/Mist CLR 13 12 94% 76 0.0
20 18:02 W 15 4.83 Fog/Mist CLR 13 12 94% 76.02 0.0
20 17:42 W 11 4.83 Fog/Mist CLR 13 12 94% 76.02 0.0
20 17:24 W 11 4.83 Fog/Mist CLR 13 12 94% 76.05 0.0
20 17:03 W 13 4.83 Fog/Mist CLR 13 12 94% 76.05 0.0
20 16:44 W 9 4.83 Fair CLR 13 12 94% 76.02 0.0
20 16:25 W 11 4.83 Fog/Mist FEW007 13 12 94% 76.07 0.0
20 16:06 W 11 6.44 Fog/Mist BKN006 13 12 94% 76.07 0.0
20 15:47 W 13 4.83 Fog/Mist BKN006 13 12 94% 76.1 0.0
20 15:26 SW 11 4.83 Fog/Mist FEW006 13 12 94% 76.1 0.0
20 15:03 SW 13 4.83 Fog/Mist FEW071 13 12 94% 76.1 0.0
20 14:44 W 13 4.83 Fair CLR 13 12 94% 76.12 0.0
20 14:24 W 15 6.44 Fog/Mist CLR 13 12 94% 76.12 0.0
20 14:04 Vrbl 11 4.83 Fog/Mist CLR 13 12 94% 76.12 0.0
20 13:46 SW 11 4.83 Fog/Mist CLR 14 13 94% 76.15 0.0
20 13:23 SW 13 4.83 Fog/Mist CLR 13 12 94% 76.15 0.0
20 13:08 W 13 4.83 Fog/Mist CLR 13 12 94% 76.15 0.0
20 12:43 Vrbl 9 4.83 Fog/Mist CLR 13 12 94% 76.17 0.0
20 12:24 W 11 4.83 Fog/Mist CLR 13 12 94% 76.2 0.0
20 12:03 Vrbl 7 4.83 Fog/Mist CLR 13 12 94% 76.2 0.0
20 11:44 W 13 4.02 Fog/Mist FEW005 12 12 100% 76.2 0.0
20 11:25 SW 11 4.83 Fog/Mist CLR 13 12 94% 76.2 0.0
20 11:05 SW 11 6.44 Fog/Mist CLR 13 12 94% 76.2 0.0
20 10:45 SW 13 4.02 Fog/Mist CLR 13 12 94% 76.17 0.0
20 10:27 S 13 4.83 Fog/Mist CLR 13 12 94% 76.17 0.0
20 10:08 S 9 4.83 Fog/Mist NULL 13 12 94% 76.17 0.0
20 08:43 Vrbl 7 4.83 Fog/Mist CLR 12 12 100% 76.17 0.0
20 08:15 SW 7 4.02 Fog/Mist FEW006 12 12 100% 76.17 0.0
20 07:55 Calm 4.02 Fog/Mist FEW006 11 11 100% 76.17 0.0
20 07:35 Calm 6.44 Fog/Mist CLR 10 10 100% 76.17 0.0
20 07:15 Calm 6.44 Fog/Mist CLR 8 8 100% 76.15 0.0
20 06:55 Calm 6.44 Fog/Mist CLR 7 7 100% 76.15 0.0
20 06:35 Calm 11.27 Fair CLR 7 7 100% 76.15 0.0
20 06:15 Calm 8.05 Fog/Mist CLR 7 7 100% 76.15 0.0
20 05:55 Calm 8.05 Fog/Mist CLR 6 6 100% 76.15 0.0
20 05:35 Calm 8.05 Fog/Mist CLR 7 7 100% 76.15 0.0
20 05:15 Calm 8.05 Fog/Mist CLR 7 7 100% 76.15 0.0
20 04:55 NE 6 9.66 Fog/Mist CLR 0 0 0% 76.15 0.0
20 04:35 Calm 11.27 Fair CLR 7 7 100% 76.15 0.0
20 04:15 Calm 9.66 Fog/Mist CLR 7 7 100% 76.15 0.0
20 03:55 Calm 6.44 Fog/Mist CLR 7 7 100% 76.17 0.0
20 03:35 Calm 8.05 Fog/Mist CLR 7 7 100% 76.17 0.0
20 03:15 Calm 8.05 Fair CLR 0 0 0% 76.15 0.0
20 02:55 Calm 8.05 Fog/Mist CLR 7 7 100% 76.17 0.0
20 02:35 Calm 8.05 Fog/Mist CLR 7 7 100% 76.17 0.0
20 02:15 Calm 8.05 Fog/Mist CLR 7 7 100% 76.17 0.0
20 01:55 Calm 8.05 Fog/Mist CLR 7 7 100% 76.17 0.0
20 01:35 Calm 8.05 Fog/Mist CLR 7 7 100% 76.2 0.0
20 01:15 Calm 6.44 Fog/Mist CLR 8 8 100% 76.2 0.0
20 00:55 Calm 6.44 Fog/Mist CLR 8 8 100% 76.2 0.0
20 00:35 Calm 8.05 Fog/Mist CLR 8 8 100% 76.23 0.0
20 00:15 Calm 8.05 Fog/Mist CLR 8 8 100% 76.23 0.0
19 23:55 Calm 8.05 Fog/Mist CLR 8 8 100% 76.25 0.0
19 23:35 Calm 6.44 Fog/Mist CLR 9 9 100% 76.25 0.0
19 23:15 Calm 6.44 Fog/Mist CLR 9 9 100% 76.25 0.0
19 22:55 Calm 8.05 Fog/Mist CLR 9 9 100% 76.25 0.0
19 22:35 Calm 6.44 Fog/Mist CLR 10 10 100% 76.25 0.0
19 22:15 Calm 6.44 Fog/Mist CLR 10 10 100% 76.23 0.0
19 21:55 Calm 6.44 Fog/Mist CLR 10 10 100% 76.23 0.0
19 21:35 Calm 4.83 Fog/Mist CLR 10 10 100% 76.2 0.0
19 21:15 Calm 4.83 Fog/Mist CLR 11 11 100% 76.2 0.0
19 20:55 Calm 6.44 Fog/Mist CLR 11 11 100% 76.2 0.0
19 20:35 NW 9 4.83 Fog/Mist CLR 11 11 100% 76.2 0.0
19 20:15 NW 13 4.02 Fog/Mist CLR 12 12 100% 76.2 0.0
19 19:55 NW 11 4.83 Fair CLR 0 0 0% 76.17 0.0
19 19:35 N 13 G 22 4.83 Fog/Mist CLR 13 11 88% 76.17 0.0
19 19:15 NW 19 6.44 Fair with Haze CLR 14 11 82% 76.15 0.0
19 18:55 NW 19 6.44 Fair with Haze CLR 15 11 77% 76.15 0.0
19 18:35 NW 22 6.44 Fair with Haze CLR 15 11 77% 76.15 0.0
19 18:15 NW 26 6.44 Fair with Haze CLR 16 12 77% 76.17 0.0
19 17:55 NW 26 8.05 Fair with Haze CLR 17 12 73% 76.17 0.0
19 17:35 NW 22 6.44 Fair with Haze CLR 17 12 73% 76.17 0.0
19 17:15 NW 22 11.27 Fair CLR 19 10 56% 76.17 0.0
19 16:55 NW 22 8.05 Fair with Haze CLR 19 11 60% 76.17 0.0
19 16:35 NW 22 9.66 Fair with Haze CLR 19 10 56% 76.2 0.0
19 16:15 NW 20 8.05 Fair with Haze CLR 19 11 60% 76.2 0.0
19 15:55 NW 22 6.44 Fair CLR 0 0 0% 76.23 0.0
19 15:35 NW 26 11.27 Fair CLR 21 11 53% 76.23 0.0
19 15:15 NW 22 G 35 12.87 Fair CLR 21 10 50% 76.23 0.0
19 14:55 N 20 12.87 Fair CLR 21 6 38% 76.23 0.0
19 14:35 NW 22 12.87 Fair CLR 20 9 49% 76.25 0.0
19 14:15 NW 20 9.66 Fair with Haze CLR 20 10 53% 76.25 0.0
19 13:55 NW 19 8.05 Fair with Haze CLR 19 11 60% 76.28 0.0
19 13:35 N 22 8.05 Fair with Haze CLR 18 12 68% 76.3 0.0
19 13:15 NW 19 6.44 Fair with Haze CLR 17 13 77% 76.3 0.0
19 12:55 NW 15 6.44 Fair with Haze CLR 18 11 64% 76.3 0.0
19 12:35 NW 7 4.83 Fair with Haze CLR 18 12 68% 76.3 0.0
19 12:15 Vrbl 6 6.44 Fair with Haze CLR 17 13 77% 76.3 0.0
19 11:55 Vrbl 6 4.83 Fair CLR 0 0 0% 76.3 0.0
19 11:35 W 6 4.83 Fair with Haze CLR 16 13 83% 76.33 0.0
19 11:15 Calm 4.02 Fair with Haze CLR 15 13 88% 76.33 0.0
19 10:55 Vrbl 7 4.83 Fair with Haze CLR 15 13 88% 76.33 0.0
19 10:35 Vrbl 9 4.83 Fair with Haze CLR 15 12 82% 76.3 0.0
19 10:15 W 9 4.83 Fair with Haze CLR 15 12 82% 76.3 0.0
19 09:55 Vrbl 6 4.83 Fog/Mist CLR 14 12 88% 76.3 0.0
19 09:35 Calm 4.83 Fair with Haze CLR 14 12 88% 76.3 0.0
19 09:15 S 6 4.02 Fair with Haze CLR 14 11 82% 76.28 0.0
19 08:55 Vrbl 7 4.83 Fog/Mist CLR 13 11 88% 76.28 0.0
19 08:35 SE 6 4.83 Fog/Mist CLR 12 11 94% 76.28 0.0
19 08:15 S 6 6.44 Fog/Mist CLR 11 10 94% 76.28 0.0
19 07:55 Calm 6.44 Fog/Mist CLR 11 10 94% 76.25 0.0
19 07:35 Calm 6.44 Fog/Mist CLR 9 9 100% 76.25 0.0
19 07:15 Calm 6.44 Fog/Mist CLR 8 8 100% 76.23 0.0
19 06:55 Calm 8.05 Fair CLR 0 0 0% 76.23 0.0
19 06:35 Calm 8.05 Fog/Mist CLR 5 5 100% 76.2 0.0
19 06:15 Calm 6.44 Fog/Mist FEW003 5 5 100% 76.2 0.0
19 05:55 Calm 8.05 Fog/Mist BKN003 5 5 100% 76.17 0.0
19 05:35 Calm 8.05 Fog/Mist BKN003 5 5 100% 76.17 0.0
19 05:15 Calm 9.66 Fog/Mist BKN003 5 5 100% 76.17 0.0
19 04:55 Calm 9.66 Fog/Mist SCT003 6 6 100% 76.17 0.0
19 04:35 Calm 9.66 Fog/Mist CLR 5 5 100% 76.17 0.0
19 04:15 Calm 9.66 Fog/Mist SCT004 6 6 100% 76.2 0.0
19 03:55 E 7 9.66 Fog/Mist BKN004 6 6 100% 5 76.2 0.0
19 03:35 Calm 9.66 Fog/Mist FEW003 6 6 100% 76.2 0.0
19 03:15 Calm 9.66 Fog/Mist CLR 6 6 100% 76.2 0.0
19 02:55 Calm 11.27 Fair CLR 6 6 100% 76.23 0.0
19 02:35 Calm 9.66 Fog/Mist CLR 6 6 100% 76.23 0.0
19 02:15 Calm 8.05 Fog/Mist CLR 7 6 93% 76.2 0.0
19 01:55 Calm 9.66 Fog/Mist CLR 7 7 100% 76.2 0.0
19 01:35 Calm 9.66 Fog/Mist CLR 7 7 100% 76.23 0.0
19 01:15 Calm 9.66 Fog/Mist CLR 8 7 93% 76.23 0.0
19 00:55 Calm 9.66 Fog/Mist CLR 8 7 93% 76.23 0.0
19 00:35 Calm 9.66 Fog/Mist CLR 8 7 93% 76.23 0.0
19 00:15 Calm 9.66 Fog/Mist CLR 8 7 93% 76.23 0.0
18 23:55 Calm 9.66 Fog/Mist CLR 9 7 87% 76.23 0.0
18 23:35 N 7 12.87 Fair CLR 9 7 87% 8 76.23 0.0
18 23:15 N 7 8.05 Fog/Mist CLR 10 8 88% 9 76.23 0.0
18 22:55 N 7 8.05 Fair with Haze CLR 11 9 88% 76.23 0.0
18 22:35 N 7 8.05 Fair with Haze CLR 12 9 82% 76.2 0.0
18 22:15 Vrbl 7 9.66 Fair with Haze CLR 12 8 77% 76.2 0.0
18 21:55 N 9 9.66 Fair with Haze CLR 12 8 77% 76.2 0.0
18 21:35 NE 6 11.27 Fair CLR 13 8 72% 76.17 0.0
18 21:15 NE 7 G 20 12.87 Fair CLR 0 0 0% 76.15 0.0
18 20:15 NW 28 12.87 Fair CLR 15 5 51% 76.1 0.0
18 19:55 N 28 G 39 14.48 Fair CLR 16 5 48% 76.1 0.0
18 19:35 NW 33 14.48 Fair and Breezy CLR 0 0 0% 76.1 0.0
18 19:15 NW 31 G 43 14.48 Fair CLR 16 6 52% 76.1 0.0
18 18:55 NW 31 G 43 14.48 Fair CLR 17 5 45% 76.07 0.0
18 18:35 NW 30 14.48 Fair CLR 17 5 45% 76.07 0.0
18 18:15 NW 22 14.48 Fair CLR 19 4 37% 76.1 0.0
18 17:55 NW 24 16.09 NULL NULL 19 4 37% 76.1 0.0
18 17:35 NW 31 0.00 NULL NULL 0 0 0% 76.1 0.0
18 17:15 N 20 G 35 14.48 Fair CLR 19 4 37% 76.12 0.0
18 16:55 N 26 G 39 16.09 Fair CLR 19 4 37% 76.12 0.0
18 16:35 NW 33 G 43 16.09 Fair and Breezy CLR 19 4 37% 76.12 0.0
18 16:15 NW 28 14.48 Fair CLR 19 5 40% 76.12 0.0
18 15:55 NW 26 G 35 12.87 Fair CLR 18 6 46% 76.15 0.0
18 15:35 NW 28 G 37 14.48 Fair CLR 19 7 46% 76.15 0.0
18 15:15 NW 28 14.48 Fair CLR 19 7 46% 76.17 0.0
18 14:55 NW 26 11.27 NULL NULL 19 8 49% 76.17 0.0
18 14:35 NW 26 0.00 NULL NULL 0 0 0% 76.17 0.0
18 13:55 NW 26 G 37 16.09 Fair CLR 21 4 33% 76.17 0.0
18 13:25 NW 28 14.48 Fair CLR 21 3 31% 76.17 0.0
18 13:15 NW 26 G 35 12.87 Fair CLR 21 4 33% 76.17 0.0
18 12:15 NW 26 14.48 NULL NULL 19 7 46% 76.17 0.0
18 11:55 W 20 G 33 0.00 NULL NULL 20 6 40% 76.17 0.0
18 11:35 NW 24 0.00 NULL NULL 0 0 0% 76.15 0.0
18 10:55 N 26 G 39 16.09 NULL NULL 23 -3 17% 76.12 0.0
18 10:35 NE 30 0.00 NULL NULL 0 0 0% 76.12 0.0
18 09:55 N 30 G 43 14.48 Fair CLR 22 -2 20% 76.07 0.0
18 09:35 NE 31 G 43 16.09 NULL NULL 22 -2 20% 76.07 0.0
18 07:55 NE 31 G 48 16.09 Fair CLR 20 -3 21% 76 0.0
18 07:35 NE 31 G 46 14.48 Fair CLR 19 -3 22% 76 0.0
18 07:15 NE 31 G 46 16.09 Fair CLR 19 -3 22% 76 0.0
18 06:55 NE 26 G 43 16.09 Fair CLR 19 -3 22% 75.97 0.0
18 06:35 NE 30 G 43 16.09 Fair CLR 18 -3 24% 75.97 0.0
18 06:15 N 30 G 41 16.09 Fair CLR 18 -3 24% 75.97 0.0
18 05:55 N 24 G 41 16.09 Fair CLR 18 -3 24% 75.95 0.0
18 05:35 N 24 G 41 16.09 Fair CLR 18 -3 24% 75.92 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)