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.
17 21:55 NW 13 11.27 Fair CLR 14 13 94% 76.12 0.0
17 21:35 NW 13 9.66 Fog/Mist CLR 15 13 88% 76.12 0.0
17 21:15 NW 13 11.27 Fair CLR 0 0 0% 76.12 0.0
17 20:55 NW 15 14.48 Fair CLR 16 14 88% 76.12 0.0
17 20:35 N 11 16.09 Fair CLR 17 13 77% 76.1 0.0
17 20:15 N 15 14.48 Fair CLR 18 13 73% 76.1 0.0
17 19:55 NW 19 14.48 Fair CLR 19 12 64% 76.1 0.0
17 19:35 NW 11 14.48 Fair CLR 19 12 64% 76.07 0.0
17 19:15 NW 19 14.48 Fair CLR 20 12 60% 76.05 0.0
17 18:55 NW 15 14.48 Fair CLR 21 11 53% 76.05 0.0
17 18:35 NW 19 14.48 Fair CLR 23 10 44% 76.02 0.0
17 18:15 NW 20 16.09 Fair CLR 24 10 41% 25 76.02 0.0
17 17:55 NW 20 16.09 Fair CLR 24 10 41% 25 76.02 0.0
17 17:35 NW 20 16.09 Fair CLR 24 11 44% 25 76.02 0.0
17 17:15 NW 22 16.09 Fair CLR 24 12 47% 25 76.02 0.0
17 16:55 NW 19 16.09 Fair CLR 25 13 47% 26 76.02 0.0
17 16:35 NW 19 16.09 Fair CLR 25 13 47% 26 76.05 0.0
17 16:15 N 19 16.09 Fair CLR 26 13 45% 26 76.05 0.0
17 15:55 N 15 16.09 Fair CLR 28 13 40% 28 76.05 0.0
17 15:35 NW 20 16.09 Fair CLR 27 14 45% 27 76.05 0.0
17 15:15 NW 17 16.09 Fair CLR 26 14 48% 26 76.07 0.0
17 14:55 NW 19 16.09 Fair CLR 25 14 51% 26 76.1 0.0
17 14:35 NW 20 16.09 Fair CLR 25 14 51% 26 76.1 0.0
17 14:15 NW 17 16.09 Fair CLR 26 15 51% 27 76.12 0.0
17 13:55 NW 13 16.09 Fair CLR 23 16 65% 76.15 0.0
17 13:35 NW 13 12.87 Fair CLR 25 16 57% 26 76.17 0.0
17 13:15 Calm 14.48 Fair CLR 23 16 65% 76.2 0.0
17 12:55 NW 6 14.48 Fair CLR 22 17 73% 76.23 0.0
17 12:35 Calm 12.87 Fair CLR 22 16 69% 76.23 0.0
17 12:15 Calm 14.48 Fair CLR 21 15 69% 76.25 0.0
17 11:55 NW 6 11.27 Fair CLR 20 15 73% 76.25 0.0
17 11:35 NW 7 11.27 Fair CLR 20 15 73% 76.25 0.0
17 11:15 Calm 12.87 Fair CLR 19 15 78% 76.28 0.0
17 10:55 NW 7 14.48 Fair CLR 19 14 73% 76.28 0.0
17 10:35 NW 7 11.27 Fair CLR 18 14 78% 76.28 0.0
17 10:15 Vrbl 7 11.27 Fair CLR 18 14 78% 76.25 0.0
17 09:55 Calm 12.87 Fair CLR 17 14 83% 76.25 0.0
17 09:35 Calm 14.48 Fair CLR 16 15 94% 76.25 0.0
17 09:15 Calm 12.87 Fair CLR 15 14 94% 76.25 0.0
17 08:55 Calm 9.66 Fair CLR 0 0 0% 76.25 0.0
17 08:35 Calm 12.87 Fair CLR 12 12 100% 76.23 0.0
17 08:15 Calm 14.48 Fair CLR 10 10 100% 76.23 0.0
17 07:55 Calm 14.48 Fair CLR 9 9 100% 76.2 0.0
17 07:35 Calm 14.48 Fair CLR 9 9 100% 76.2 0.0
17 07:15 NW 9 14.48 Fair CLR 0 0 0% 76.17 0.0
17 06:35 Calm 16.09 Fair CLR 8 8 100% 76.15 0.0
17 06:15 Calm 16.09 Fair CLR 8 8 100% 76.15 0.0
17 05:55 Calm 14.48 Fair CLR 8 8 100% 76.15 0.0
17 05:35 Calm 16.09 Fair CLR 8 8 100% 76.15 0.0
17 05:15 Calm 16.09 Fair CLR 9 9 100% 76.17 0.0
17 04:55 Calm 14.48 Fair CLR 8 8 100% 76.17 0.0
17 04:35 Calm 16.09 Fair CLR 9 9 100% 76.2 0.0
17 04:15 Calm 16.09 Fair CLR 0 0 0% 76.17 0.0
17 03:55 Calm 14.48 Fair CLR 9 9 100% 76.17 0.0
17 03:35 Calm 16.09 Fair CLR 0 0 0% 76.2 0.0
17 03:15 Calm 16.09 Fair CLR 9 9 100% 76.23 0.0
17 02:55 Calm 14.48 Fair CLR 8 8 100% 76.23 0.0
17 02:35 Calm 14.48 Fair CLR 9 9 100% 76.25 0.0
17 02:15 Calm 16.09 Fair CLR 8 8 100% 76.25 0.0
17 01:55 Calm 14.48 Fair CLR 9 9 100% 76.23 0.0
17 01:35 Calm 16.09 Fair CLR 9 9 100% 76.23 0.0
17 01:15 Calm 14.48 Fair CLR 9 9 100% 76.23 0.0
17 00:55 Calm 14.48 Fair CLR 9 9 100% 76.25 0.0
17 00:35 Calm 16.09 Fair CLR 9 9 100% 76.28 0.0
17 00:15 Calm 14.48 A Few Clouds FEW003 10 10 100% 76.28 0.0
16 23:55 Calm 12.87 Fair CLR 10 10 100% 76.25 0.0
16 23:35 NW 6 14.48 Fair CLR 10 10 100% 76.25 0.0
16 23:15 Calm 14.48 Fair CLR 11 10 94% 76.25 0.0
16 22:55 Calm 16.09 Fair CLR 11 10 94% 76.25 0.0
16 22:35 NW 7 12.87 Fair CLR 12 12 100% 76.28 0.0
16 22:15 NW 15 12.87 Fair CLR 13 13 100% 76.25 0.0
16 21:55 NW 15 12.87 Fair CLR 13 13 100% 76.25 0.0
16 21:35 NW 9 14.48 Fair CLR 13 13 100% 76.23 0.0
16 21:15 NW 9 12.87 Fair CLR 13 13 100% 76.23 0.0
16 20:55 NW 17 16.09 Fair CLR 14 13 94% 76.23 0.0
16 20:35 NW 15 16.09 Fair CLR 15 12 82% 76.2 0.0
16 20:15 NW 17 11.27 Fair CLR 15 13 88% 76.2 0.0
16 19:55 NW 15 16.09 Fair CLR 16 12 77% 76.17 0.0
16 19:35 NW 9 14.48 Fair CLR 16 12 77% 76.17 0.0
16 19:15 NW 11 16.09 Fair CLR 18 11 64% 76.17 0.0
16 18:55 N 15 16.09 Fair CLR 21 9 46% 76.15 0.0
16 18:35 N 17 16.09 Fair CLR 22 8 41% 76.15 0.0
16 18:15 NW 20 16.09 Fair CLR 22 8 41% 76.15 0.0
16 17:55 NW 20 16.09 Fair CLR 22 9 44% 76.15 0.0
16 17:35 NW 17 16.09 Fair CLR 23 9 41% 76.15 0.0
16 17:15 NW 20 16.09 Fair CLR 23 9 41% 76.17 0.0
16 16:55 NW 22 14.48 Fair CLR 22 11 50% 76.17 0.0
16 16:35 NW 15 16.09 Fair CLR 23 11 47% 76.2 0.0
16 16:15 N 19 G 30 14.48 Fair CLR 23 9 41% 76.2 0.0
16 15:55 N 19 16.09 Fair CLR 25 10 39% 26 76.2 0.0
16 15:35 NW 19 16.09 Fair CLR 26 11 39% 26 76.23 0.0
16 15:15 N 15 16.09 Fair CLR 26 12 42% 26 76.23 0.0
16 14:55 NW 19 16.09 Fair CLR 24 13 50% 25 76.25 0.0
16 14:35 NW 13 14.48 Fair CLR 24 15 57% 25 76.28 0.0
16 14:15 NW 13 14.48 Fair CLR 22 16 69% 76.3 0.0
16 13:55 NW 13 14.48 Fair CLR 21 15 69% 76.33 0.0
16 13:35 NW 13 12.87 Fair CLR 20 15 73% 76.35 0.0
16 13:15 Vrbl 6 12.87 Fair CLR 19 15 78% 76.38 0.0
16 12:55 Calm 14.48 Fair CLR 19 15 78% 76.4 0.0
16 12:35 SE 7 12.87 Fair CLR 19 13 68% 76.43 0.0
16 12:15 S 7 14.48 Fair CLR 18 13 73% 76.43 0.0
16 11:55 SE 7 11.27 Fair CLR 17 14 83% 76.43 0.0
16 11:35 S 9 9.66 Fair with Haze CLR 17 15 88% 76.43 0.0
16 11:15 S 9 9.66 Fog/Mist CLR 15 14 94% 76.43 0.0
16 10:55 S 13 9.66 Fog/Mist CLR 15 14 94% 76.43 0.0
16 10:35 S 15 8.05 Fog/Mist CLR 15 14 94% 76.43 0.0
16 10:15 SE 11 8.05 Fog/Mist CLR 14 14 100% 76.43 0.0
16 09:55 SE 9 6.44 Fog/Mist CLR 15 14 94% 76.4 0.0
16 09:35 Calm 8.05 Fog/Mist CLR 16 15 94% 76.38 0.0
16 09:15 Calm 8.05 Fog/Mist CLR 15 14 94% 76.38 0.0
16 08:55 Calm 4.83 Fog/Mist CLR 13 13 100% 76.35 0.0
16 08:35 Calm 12.87 Fair CLR 12 12 100% 76.35 0.0
16 08:15 Calm 14.48 Fair CLR 9 9 100% 76.35 0.0
16 07:55 Calm 14.48 Fair CLR 8 8 100% 76.33 0.0
16 07:35 Calm 12.87 Fair CLR 8 8 100% 76.33 0.0
16 07:15 Calm 16.09 Fair CLR 7 7 100% 76.33 0.0
16 06:55 Calm 16.09 Fair CLR 7 7 100% 76.33 0.0
16 06:35 Calm 16.09 Fair CLR 8 8 100% 76.33 0.0
16 06:15 NW 7 14.48 Fair CLR 0 0 0% 76.33 0.0
16 05:55 Calm 16.09 Fair CLR 7 7 100% 76.33 0.0
16 05:35 Calm 16.09 Fair CLR 7 7 100% 76.3 0.0
16 05:15 Calm 14.48 Fair CLR 8 8 100% 76.3 0.0
16 04:55 Calm 16.09 Fair CLR 8 8 100% 76.3 0.0
16 04:35 Calm 16.09 Fair CLR 7 7 100% 76.3 0.0
16 04:15 Calm 16.09 Fair CLR 8 8 100% 76.3 0.0
16 03:55 Calm 16.09 Fair CLR 7 7 100% 76.33 0.0
16 03:35 Calm 11.27 Fair CLR 8 8 100% 76.33 0.0
16 03:15 NW 6 14.48 Fair CLR 8 8 100% 76.35 0.0
16 02:55 Calm 14.48 Fair CLR 0 0 0% 76.35 0.0
16 02:35 Calm 12.87 Fair CLR 8 8 100% 76.35 0.0
16 02:15 Calm 14.48 Fair CLR 8 8 100% 76.35 0.0
16 01:55 Calm 12.87 A Few Clouds FEW003 8 8 100% 76.35 0.0
16 01:35 Calm 12.87 Partly Cloudy SCT003 8 8 100% 76.35 0.0
16 01:15 Calm 14.48 Partly Cloudy SCT003 8 8 100% 76.38 0.0
16 00:55 Calm 14.48 Mostly Cloudy BKN003 9 9 100% 76.38 0.0
16 00:35 Calm 14.48 Partly Cloudy SCT003 9 9 100% 76.38 0.0
16 00:15 Calm 16.09 Partly Cloudy SCT003 9 9 100% 76.4 0.0
15 23:55 Calm 12.87 Fair CLR 10 10 100% 76.4 0.0
15 23:35 N 7 11.27 Fair CLR 11 11 100% 76.4 0.0
15 23:15 N 7 11.27 Fair CLR 11 11 100% 76.4 0.0
15 22:55 N 6 12.87 A Few Clouds FEW028 10 10 100% 76.4 0.0
15 22:35 Calm 12.87 Fair CLR 10 10 100% 76.4 0.0
15 22:15 Calm 11.27 Fair CLR 12 12 100% 76.4 0.0
15 21:55 N 7 12.87 Fair CLR 12 12 100% 76.4 0.0
15 21:35 NW 11 11.27 Fair CLR 12 12 100% 76.4 0.0
15 21:15 NW 11 12.87 Fair CLR 11 11 100% 76.4 0.0
15 20:55 N 9 12.87 Fair CLR 12 12 100% 76.38 0.0
15 20:35 NW 7 12.87 Fair CLR 12 12 100% 76.38 0.0
15 20:15 NW 9 12.87 Fair CLR 13 12 94% 76.38 0.0
15 19:55 N 11 G 22 11.27 Fair CLR 13 13 100% 76.38 0.0
15 19:35 N 15 11.27 Fair CLR 13 13 100% 76.38 0.0
15 19:15 N 20 11.27 Fair CLR 13 13 100% 76.38 0.0
15 18:55 N 17 9.66 Fog/Mist CLR 14 13 94% 76.38 0.0
15 18:35 NW 19 8.05 Fog/Mist CLR 15 14 94% 76.35 0.0
15 18:15 NW 19 12.87 Fair CLR 16 13 83% 76.35 0.0
15 17:55 NW 22 14.48 Fair CLR 18 12 68% 76.38 0.0
15 17:35 Calm 16.09 Fair CLR 20 11 56% 76.38 0.0
15 17:15 NW 19 16.09 Fair CLR 19 11 60% 76.35 0.0
15 16:55 NW 22 16.09 Fair CLR 0 0 0% 76.35 0.0
15 16:35 NW 24 14.48 Fair CLR 18 12 68% 76.38 0.0
15 16:15 NW 28 14.48 Fair CLR 18 13 73% 76.38 0.0
15 15:55 N 24 G 35 11.27 Fair CLR 17 14 83% 76.38 0.0
15 15:35 NW 28 9.66 Fair with Haze CLR 17 14 83% 76.38 0.0
15 15:15 NW 22 12.87 Fair CLR 17 14 83% 76.38 0.0
15 14:55 NW 22 12.87 Fair CLR 17 14 83% 76.4 0.0
15 14:35 NW 24 14.48 Fair CLR 18 14 78% 76.4 0.0
15 14:15 NW 26 11.27 Fair CLR 0 0 0% 76.43 0.0
15 13:55 NW 20 8.05 Fair with Haze CLR 18 15 83% 76.45 0.0
15 13:35 NW 20 9.66 Fair with Haze CLR 18 15 83% 76.48 0.0
15 13:15 NW 20 9.66 Fair with Haze CLR 18 15 83% 76.48 0.0
15 12:55 NW 17 9.66 Fair CLR 0 0 0% 76.5 0.0
15 12:35 NW 20 9.66 Fair with Haze CLR 17 15 88% 76.5 0.0
15 12:15 NW 20 8.05 Fog/Mist CLR 17 15 88% 76.53 0.0
15 11:55 NW 20 8.05 Fog/Mist CLR 15 14 94% 76.53 0.0
15 11:35 NW 20 6.44 Fog/Mist CLR 16 14 88% 76.56 0.0
15 11:15 NW 19 8.05 Fog/Mist CLR 16 14 88% 76.56 0.0
15 10:55 NW 19 6.44 Fog/Mist CLR 16 15 94% 76.56 0.0
15 10:35 NW 13 8.05 Fog/Mist CLR 16 15 94% 76.56 0.0
15 10:15 NW 15 6.44 Fog/Mist CLR 15 14 94% 76.56 0.0
15 09:55 NW 13 6.44 Fog/Mist CLR 14 14 100% 76.56 0.0
15 09:35 N 19 6.44 Fog/Mist CLR 13 13 100% 76.56 0.0
15 09:15 N 13 4.83 Fog/Mist CLR 12 12 100% 76.56 0.0
15 08:55 NW 15 4.02 Fog/Mist SCT005 12 12 100% 76.53 0.0
15 08:35 Calm 4.83 Fog/Mist CLR 10 10 100% 76.53 0.0
15 08:15 Calm 6.44 Fog/Mist CLR 8 8 100% 76.5 0.0
15 07:35 Calm 6.44 Fog/Mist CLR 6 6 100% 76.48 0.0
15 07:15 Calm 9.66 Fog/Mist SCT003 6 6 100% 76.45 0.0
15 06:55 Calm 9.66 Fog/Mist BKN003 7 7 100% 76.45 0.0
15 06:35 Calm 6.44 Fog/Mist SCT004 7 7 100% 76.45 0.0
15 06:15 Calm 6.44 Fog/Mist BKN005 7 7 100% 76.45 0.0
15 05:55 Calm 8.05 Fog/Mist BKN006 7 7 100% 76.45 0.0
15 05:35 Calm 8.05 Fog/Mist BKN006 7 7 100% 76.45 0.0
15 05:15 Calm 8.05 Fog/Mist SCT005 8 8 100% 76.45 0.0
15 04:55 Calm 8.05 Fog/Mist SCT004 7 7 100% 76.45 0.0
15 04:15 Calm 8.05 Fog/Mist OVC005 7 7 100% 76.45 0.0
15 03:55 Calm 8.05 Fog/Mist OVC004 8 8 100% 76.45 0.0
15 03:35 Calm 8.05 Fog/Mist OVC005 8 8 100% 76.45 0.0
15 03:15 Calm 8.05 Fog/Mist OVC006 9 9 100% 76.45 0.0
15 02:55 Calm 9.66 Fog/Mist OVC006 9 9 100% 76.48 0.0
15 02:35 Calm 9.66 Fog/Mist OVC006 9 9 100% 76.48 0.0
15 02:15 SE 6 9.66 Fog/Mist OVC006 10 10 100% 76.48 0.0
15 01:55 E 7 12.87 Overcast OVC007 10 10 100% 9 76.48 0.0
15 01:35 Calm 14.48 Overcast OVC006 10 10 100% 76.48 0.0
15 01:15 Calm 14.48 Overcast OVC006 10 10 100% 76.48 0.0
15 00:55 Calm 14.48 Overcast OVC007 10 10 100% 76.48 0.0
15 00:35 Calm 14.48 Overcast OVC007 10 10 100% 76.48 0.0
15 00:15 Calm 14.48 Overcast OVC008 10 10 100% 76.48 0.0
14 23:55 Calm 12.87 Overcast OVC008 11 11 100% 76.5 0.0
14 23:35 NE 6 9.66 Fog/Mist OVC008 11 11 100% 76.5 0.0
14 23:15 Vrbl 7 9.66 Fog/Mist OVC008 12 12 100% 76.5 0.0
14 22:55 N 17 11.27 Overcast OVC007 12 12 100% 76.53 0.0
14 22:35 N 13 8.05 Fog/Mist OVC008 12 12 100% 76.5 0.0
14 22:15 N 11 9.66 Fog/Mist OVC008 12 12 100% 76.53 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)