Weather observations for the past three days for
Half Moon Bay Airport
Imperial (Metric)
Date Time (pst) Wind (mph) Vis. (mi.) Weather Sky Cond. Temperature (ºF) Relative Humidity Wind Chill (°F) Heat Index (°F) Pressure Precipitation (in)
Air Dwpt 6 hour altimeter (in) sea level (mb) 1 hr 3 hr 6 hr
Max. Min.
03 06:55 S 15 G 24 7.00 Overcast SCT026 SCT048 OVC055 60.8 53.6 77% 30.04 0.0
03 06:35 S 14 8.00 Overcast SCT026 OVC060 59 53.6 82% 30.04 0.0
03 06:15 S 14 G 21 8.00 Overcast BKN065 BKN075 OVC085 59 53.6 82% 30.03 0.0
03 05:55 S 15 G 21 8.00 Mostly Cloudy FEW026 BKN080 BKN090 59 53.6 82% 30.04 0.0
03 05:35 S 10 8.00 Partly Cloudy FEW025 FEW030 SCT036 59 53.6 82% 30.05 0.0
03 05:15 S 13 8.00 Mostly Cloudy BKN037 59 51.8 77% 30.04 0.0
03 04:55 S 12 8.00 Overcast FEW025 OVC039 60.8 53.6 77% 30.05 0.0
03 04:35 S 12 9.00 Overcast FEW023 BKN035 OVC040 60.8 55.4 83% 30.06 0.0
03 04:15 S 13 G 18 9.00 Overcast FEW020 BKN031 OVC037 60.8 55.4 83% 30.05 0.0
03 03:55 SW 9 G 15 8.00 Overcast FEW020 OVC033 60.8 57.2 88% 30.05 0.0
03 03:35 Vrbl 7 G 20 8.00 Overcast FEW019 SCT026 OVC035 60.8 57.2 88% 30.05 0.0
03 02:55 Vrbl 6 8.00 Overcast SCT018 BKN027 OVC038 60.8 59 94% 30.05 0.0
03 02:35 SE 5 7.00 Overcast OVC017 57.2 55.4 94% 30.06 0.0
03 02:15 SE 5 7.00 Overcast BKN017 BKN021 OVC037 55.4 53.6 94% 30.06 0.0
03 01:55 Calm 8.00 Overcast SCT019 BKN025 OVC039 50 50 100% 30.07 0.0
03 01:35 Calm 8.00 Mostly Cloudy SCT023 BKN029 BKN034 50 50 100% 30.07 0.0
03 01:15 Calm 9.00 Mostly Cloudy SCT025 BKN033 50 50 100% 30.07 0.0
03 00:55 Calm 8.00 Overcast OVC023 48.2 48.2 100% 30.07 0.0
03 00:35 Calm 9.00 Mostly Cloudy BKN022 BKN029 46.4 46.4 100% 30.07 0.0
03 00:15 Calm 9.00 Partly Cloudy SCT021 SCT029 48.2 48.2 100% 30.06 0.0
02 23:55 NE 5 8.00 Fair CLR 50 50 100% 49 30.06 0.0
02 23:35 Calm 8.00 Fair CLR 51.8 51.8 100% 30.06 0.0
02 23:15 Calm 8.00 Fair CLR 53.6 51.8 94% 30.07 0.0
02 22:55 Calm 8.00 Fair CLR 51.8 51.8 100% 30.07 0.0
02 22:35 Calm 8.00 Fair CLR 51.8 51.8 100% 30.09 0.0
02 22:15 Calm 6.00 A Few Clouds FEW003 0 0 0% 30.09 0.0
02 21:55 Calm 6.00 Fog/Mist BKN003 53.6 53.6 100% 30.08 0.0
02 21:35 N 6 8.00 Partly Cloudy SCT003 53.6 53.6 100% 30.08 0.0
02 21:15 NW 5 8.00 Fair CLR 53.6 53.6 100% 30.07 0.0
02 20:55 Calm 9.00 Fair CLR 53.6 53.6 100% 30.06 0.0
02 20:35 Calm 8.00 Fair CLR 0 0 0% 30.09 0.0
02 20:15 Calm 8.00 Fair CLR 53.6 53.6 100% 30.1 0.0
02 19:55 NW 3 8.00 Fair CLR 53.6 53.6 100% 30.12 0.0
02 19:35 Calm 8.00 Fair CLR 53.6 53.6 100% 30.1 0.0
02 19:15 E 5 9.00 Fair CLR 53.6 53.6 100% 30.13 0.0
02 18:55 Calm 8.00 Fair CLR 53.6 53.6 100% 30.14 0.0
02 18:35 Calm 7.00 Fair CLR 53.6 53.6 100% 30.14 0.0
02 18:15 Calm 7.00 Fair CLR 55.4 55.4 100% 30.14 0.0
02 17:55 NE 5 7.00 Fair CLR 55.4 55.4 100% 30.13 0.0
02 17:35 Calm 7.00 A Few Clouds FEW003 57.2 55.4 94% 30.13 0.0
02 17:15 N 3 5.00 Fog/Mist CLR 60.8 57.2 88% 30.12 0.0
02 16:55 NW 6 5.00 Fair with Haze CLR 60.8 57.2 88% 30.13 0.0
02 16:35 NW 6 4.00 Fair with Haze CLR 60.8 55.4 83% 30.14 0.0
02 16:15 NW 5 5.00 Fair with Haze CLR 62.6 55.4 77% 30.13 0.0
02 15:55 NW 7 5.00 Fair with Haze CLR 62.6 55.4 77% 30.12 0.0
02 15:35 NW 7 4.00 Fair with Haze CLR 62.6 57.2 83% 30.12 0.0
02 15:15 Calm 6.00 Fair with Haze CLR 64.4 53.6 68% 30.11 0.0
02 14:55 NE 8 7.00 Fair CLR 62.6 55.4 77% 30.11 0.0
02 14:35 W 6 4.00 Fair with Haze CLR 62.6 55.4 77% 30.14 0.0
02 14:15 Calm 4.00 Fair with Haze CLR 62.6 53.6 73% 30.13 0.0
02 13:55 Calm 6.00 Fair with Haze CLR 62.6 53.6 73% 30.14 0.0
02 13:35 W 3 6.00 Fair with Haze CLR 62.6 53.6 73% 30.14 0.0
02 13:15 W 5 6.00 Fair with Haze CLR 62.6 53.6 73% 30.15 0.0
02 12:55 Vrbl 6 7.00 Fair CLR 64.4 53.6 68% 30.15 0.0
02 12:35 SW 8 7.00 Fair CLR 64.4 53.6 68% 30.16 0.0
02 12:15 S 3 8.00 Fair CLR 0 0 0% 30.15 0.0
02 11:55 S 5 8.00 Fair CLR 62.6 53.6 73% 30.18 0.0
02 11:35 S 5 8.00 Fair CLR 62.6 53.6 73% 30.19 0.0
02 11:15 S 8 8.00 Fair CLR 64.4 50 60% 30.2 0.0
02 10:55 SE 8 9.00 Fair CLR 62.6 50 64% 30.19 0.0
02 10:35 S 5 8.00 Fair CLR 62.6 51.8 68% 30.18 0.0
02 10:15 Calm 7.00 Fair CLR 60.8 53.6 77% 30.17 0.0
02 09:55 Calm 7.00 Fair CLR 60.8 55.4 83% 30.17 0.0
02 09:35 SE 5 8.00 Fair CLR 0 0 0% 30.17 0.0
02 09:15 Calm 6.00 Fair with Haze CLR 60.8 55.4 83% 30.18 0.0
02 08:55 Calm 7.00 Fair CLR 60.8 53.6 77% 30.18 0.0
02 08:35 Calm 8.00 Fair CLR 0 0 0% 30.18 0.0
02 08:15 Calm 8.00 Fair CLR 57.2 55.4 94% 30.19 0.0
02 07:55 Calm 7.00 Fair CLR 53.6 53.6 100% 30.18 0.0
02 07:35 NE 5 8.00 Fair CLR 50 50 100% 49 30.18 0.0
02 07:15 Calm 8.00 Fair CLR 0 0 0% 30.18 0.0
02 06:55 NE 3 8.00 Fair CLR 44.6 44.6 100% 30.17 0.0
02 06:35 NE 5 9.00 Fair CLR 46.4 46.4 100% 45 30.16 0.0
02 06:15 NE 5 9.00 Fair CLR 46.4 46.4 100% 45 30.16 0.0
02 05:55 Calm 9.00 Fair CLR 46.4 46.4 100% 30.16 0.0
02 05:35 Calm 9.00 Fair CLR 44.6 44.6 100% 30.15 0.0
02 05:15 Calm 8.00 Fair CLR 48.2 48.2 100% 30.13 0.0
02 04:55 Calm 9.00 Fair CLR 46.4 46.4 100% 30.12 0.0
02 04:35 Calm 9.00 Fair CLR 46.4 46.4 100% 30.13 0.0
02 04:15 NE 5 9.00 Fair CLR 48.2 48.2 100% 47 30.12 0.0
02 03:55 Calm 9.00 Fair CLR 46.4 46.4 100% 30.11 0.0
02 03:35 Calm 8.00 Fair CLR 48.2 48.2 100% 30.1 0.0
02 03:15 Calm 8.00 Fair CLR 46.4 46.4 100% 30.11 0.0
02 02:55 Calm 8.00 Fair CLR 46.4 46.4 100% 30.11 0.0
02 02:35 Calm 8.00 Fair CLR 44.6 44.6 100% 30.11 0.0
02 02:15 Calm 8.00 Fair CLR 44.6 44.6 100% 30.1 0.0
02 01:55 NE 6 7.00 Fair CLR 46.4 46.4 100% 44 30.1 0.0
02 01:35 Calm 7.00 Fair CLR 46.4 46.4 100% 30.1 0.0
02 01:15 NE 3 7.00 Fair CLR 46.4 46.4 100% 30.12 0.0
02 00:55 Calm 7.00 Fair CLR 50 50 100% 30.12 0.0
02 00:35 NE 6 8.00 Fair CLR 48.2 48.2 100% 46 30.13 0.0
02 00:15 NE 7 7.00 Partly Cloudy SCT016 48.2 48.2 100% 46 30.13 0.0
01 23:55 NE 3 7.00 Mostly Cloudy BKN016 46.4 46.4 100% 30.13 0.0
01 23:35 E 3 7.00 Partly Cloudy SCT016 48.2 48.2 100% 30.13 0.0
01 23:15 Calm 8.00 Fair CLR 46.4 46.4 100% 30.13 0.0
01 22:55 Calm 7.00 Fair CLR 46.4 46.4 100% 30.12 0.0
01 22:35 NE 5 9.00 A Few Clouds FEW016 48.2 48.2 100% 47 30.12 0.0
01 22:15 Calm 9.00 A Few Clouds FEW018 48.2 48.2 100% 30.12 0.0
01 21:55 NE 3 8.00 Partly Cloudy SCT019 48.2 48.2 100% 30.11 0.0
01 21:35 Calm 9.00 A Few Clouds FEW018 50 50 100% 30.1 0.0
01 21:15 Calm 8.00 Fair CLR 48.2 48.2 100% 30.09 0.0
01 20:55 Calm 8.00 Fair CLR 48.2 48.2 100% 30.09 0.0
01 20:35 Calm 7.00 Fair CLR 48.2 48.2 100% 30.08 0.0
01 20:15 Calm 9.00 Fair CLR 50 50 100% 30.07 0.0
01 19:55 NE 3 8.00 Fair CLR 50 50 100% 30.07 0.0
01 19:35 Calm 8.00 Fair CLR 53.6 53.6 100% 30.07 0.0
01 19:15 Calm 8.00 Fair CLR 55.4 53.6 94% 30.06 0.0
01 18:55 NE 6 8.00 Fair CLR 55.4 53.6 94% 30.05 0.0
01 18:35 N 6 9.00 Fair CLR 55.4 53.6 94% 30.05 0.0
01 18:15 N 6 8.00 Fair CLR 57.2 53.6 88% 30.04 0.0
01 17:55 N 6 8.00 Fair CLR 59 53.6 82% 30.04 0.0
01 17:35 N 7 G 15 9.00 Fair CLR 59 53.6 82% 30.03 0.0
01 17:15 N 10 6.00 Fair with Haze CLR 59 53.6 82% 30.02 0.0
01 16:55 N 8 G 15 8.00 Fair CLR 60.8 53.6 77% 30.01 0.0
01 16:35 NW 13 7.00 A Few Clouds FEW026 FEW031 60.8 53.6 77% 30.02 0.0
01 16:15 NW 9 8.00 Fair CLR 62.6 51.8 68% 30.01 0.0
01 15:55 NW 9 9.00 Fair CLR 62.6 50 64% 30 0.0
01 15:35 NW 9 7.00 Fair CLR 0 0 0% 29.99 0.0
01 15:15 NW 8 9.00 Fair CLR 62.6 50 64% 29.98 0.0
01 14:55 NW 10 8.00 Fair CLR 62.6 50 64% 29.98 0.0
01 14:35 NW 12 8.00 Fair CLR 62.6 50 64% 29.97 0.0
01 14:15 NW 12 9.00 Fair CLR 62.6 46.4 56% 29.96 0.0
01 13:55 NW 15 8.00 Fair CLR 62.6 48.2 60% 29.95 0.0
01 13:35 NW 15 9.00 Fair CLR 0 0 0% 29.95 0.0
01 13:15 N 12 8.00 Fair CLR 62.6 48.2 60% 29.95 0.0
01 12:55 N 13 9.00 Fair CLR 62.6 50 64% 29.95 0.0
01 12:35 NW 13 9.00 Fair CLR 62.6 50 64% 29.95 0.0
01 12:15 NW 14 8.00 Fair CLR 60.8 50 68% 29.95 0.0
01 11:55 NW 12 8.00 Fair CLR 60.8 48.2 63% 29.95 0.0
01 11:35 NW 13 8.00 Fair CLR 0 0 0% 29.96 0.0
01 11:15 NW 10 9.00 Fair CLR 60.8 50 68% 29.95 0.0
01 10:55 NW 10 9.00 Fair CLR 59 50 72% 29.95 0.0
01 10:35 NW 9 9.00 Fair CLR 59 53.6 82% 29.95 0.0
01 10:15 NW 12 9.00 Fair CLR 59 53.6 82% 29.95 0.0
01 09:55 NW 10 8.00 Fair CLR 59 53.6 82% 29.94 0.0
01 09:35 NW 8 9.00 Fair CLR 59 53.6 82% 29.93 0.0
01 09:15 N 7 9.00 Fair CLR 57.2 53.6 88% 29.93 0.0
01 08:55 N 6 9.00 Fair CLR 0 0 0% 29.92 0.0
01 08:35 Calm 8.00 Fair CLR 55.4 53.6 94% 29.92 0.0
01 08:15 Calm 9.00 Fair CLR 53.6 53.6 100% 29.92 0.0
01 07:55 Calm 9.00 Fair CLR 51.8 51.8 100% 29.91 0.0
01 07:35 Calm 9.00 Fair CLR 50 50 100% 29.9 0.0
01 07:15 Calm 9.00 Fair CLR 46.4 46.4 100% 29.89 0.0
01 06:55 NE 3 8.00 Fair CLR 46.4 46.4 100% 29.88 0.0
01 06:35 Calm 9.00 Fair CLR 46.4 46.4 100% 29.87 0.0
01 06:15 N 3 9.00 Fair CLR 46.4 46.4 100% 29.86 0.0
01 05:55 NE 3 1.00 Fog/Mist CLR 46.4 46.4 100% 29.86 0.0 0.01
01 05:35 Calm 3.00 Fog/Mist FEW034 48.2 48.2 100% 29.86 0.0
01 05:15 Calm 9.00 Mostly Cloudy FEW026 BKN037 BKN070 50 50 100% 29.85 0.0
01 04:55 N 6 7.00 Mostly Cloudy FEW024 SCT028 BKN042 50 50 100% 48 29.85 0.0 0.01
01 04:35 Calm 9.00 Partly Cloudy SCT031 SCT065 50 50 100% 29.83 0.0
01 04:15 Calm 9.00 Mostly Cloudy FEW021 FEW027 BKN060 0 0 0% 29.83 0.0
01 03:55 NE 3 9.00 Mostly Cloudy BKN019 BKN023 BKN050 51.8 51.8 100% 29.83 0.0
01 03:35 NE 3 9.00 Overcast OVC020 51.8 51.8 100% 29.83 0.0
01 03:15 NE 7 9.00 Overcast OVC020 51.8 51.8 100% 29.82 0.0
01 02:55 NE 3 9.00 Overcast OVC022 51.8 51.8 100% 29.83 0.0
01 02:15 Vrbl 3 9.00 Mostly Cloudy FEW031 SCT060 BKN075 50 50 100% 29.83 0.0
01 01:55 E 8 6.00 Light Rain Fog/Mist FEW034 SCT047 OVC060 51.8 51.8 100% 29.82 0.0 0.05
01 01:35 NE 3 8.00 Overcast FEW046 OVC060 51.8 51.8 100% 29.83 0.0
01 01:15 NE 6 5.00 Light Rain Fog/Mist FEW026 SCT038 OVC055 51.8 51.8 100% 29.84 0.0
01 01:55 N 12 G 21 1.75 Rain Fog/Mist SCT025 BKN034 OVC050 53.6 51.8 94% 29.85 0.0 0.06
01 01:35 NW 20 G 29 2.50 Light Rain FEW032 SCT040 BKN050 0 0 0% 29.85 0.0
01 01:15 NW 21 G 28 8.00 Overcast and Breezy BKN032 OVC040 57.2 51.8 82% 29.84 0.0
01 00:55 Calm 9.00 Overcast FEW028 BKN034 OVC047 51.8 51.8 100% 29.84 0.0
01 00:35 E 5 10.00 Overcast FEW022 BKN028 OVC050 51.8 51.8 100% 29.84 0.0
01 00:15 Calm 9.00 Overcast SCT023 BKN046 OVC055 50 50 100% 29.85 0.0
01 00:00 NE 3 9.00 Mostly Cloudy FEW030 SCT048 BKN055 48.2 48.2 100% 29.85 0.0
31 23:55 Calm 9.00 Mostly Cloudy FEW030 FEW048 BKN055 48.2 48.2 100% 29.85 0.0
31 23:50 Calm 9.00 Mostly Cloudy FEW030 SCT055 BKN110 50 48.2 94% 29.85 0.0
31 23:35 Calm 9.00 A Few Clouds FEW110 48.2 48.2 100% 29.85 0.0
31 23:15 Vrbl 5 9.00 Fair CLR 48.2 48.2 100% 47 29.86 0.0
31 22:55 Calm 9.00 A Few Clouds FEW090 FEW120 50 50 100% 29.86 0.0
31 22:35 Calm 9.00 Partly Cloudy SCT110 50 50 100% 29.86 0.0
31 22:15 Calm 9.00 Overcast OVC110 51.8 50 94% 29.86 0.0
31 21:55 Calm 9.00 Overcast OVC110 51.8 50 94% 29.86 0.0
31 21:35 E 5 9.00 Mostly Cloudy BKN120 51.8 50 94% 29.86 0.0
31 21:15 Calm 9.00 Fair CLR 50 50 100% 29.86 0.0
31 20:55 Calm 9.00 Fair CLR 50 48.2 94% 29.86 0.0
31 20:35 Calm 9.00 A Few Clouds FEW024 FEW029 FEW120 50 50 100% 29.86 0.0
31 20:15 Calm 9.00 Fair CLR 50 50 100% 29.86 0.0
31 19:55 Calm 9.00 Fair CLR 50 48.2 94% 29.86 0.0
31 19:35 NE 5 9.00 Fair CLR 51.8 50 94% 29.86 0.0
31 19:15 Calm 9.00 Fair CLR 51.8 50 94% 29.86 0.0
31 18:55 NE 3 9.00 Fair CLR 53.6 50 88% 29.86 0.0
31 18:35 Calm 9.00 Fair CLR 57.2 51.8 82% 29.86 0.0
31 18:15 N 6 9.00 Fair CLR 57.2 51.8 82% 29.85 0.0
31 17:55 N 7 8.00 A Few Clouds FEW120 59 51.8 77% 29.86 0.0
31 17:35 N 3 9.00 A Few Clouds FEW120 60.8 51.8 72% 29.86 0.0
31 17:15 N 6 9.00 A Few Clouds FEW120 0 0 0% 29.86 0.0
31 16:55 N 8 9.00 Fair CLR 59 51.8 77% 29.86 0.0
31 16:35 NW 9 8.00 Fair CLR 60.8 51.8 72% 29.87 0.0
31 16:15 NW 8 9.00 Fair CLR 62.6 50 64% 29.87 0.0
31 15:55 Vrbl 5 9.00 Fair CLR 62.6 51.8 68% 29.87 0.0
31 15:35 NW 6 8.00 Fair CLR 60.8 50 68% 29.87 0.0
31 15:15 Vrbl 5 9.00 Fair CLR 60.8 50 68% 29.88 0.0
31 14:55 NW 6 8.00 Fair CLR 62.6 50 64% 29.89 0.0
31 14:35 NW 5 8.00 Fair CLR 62.6 50 64% 29.9 0.0
31 14:15 N 6 9.00 Fair CLR 60.8 50 68% 29.89 0.0
31 13:55 Calm 8.00 Fair CLR 60.8 50 68% 29.91 0.0
31 13:35 NW 6 8.00 Fair CLR 60.8 50 68% 29.91 0.0
31 13:15 NW 8 7.00 A Few Clouds FEW030 62.6 50 64% 29.9 0.0
31 12:55 NW 8 9.00 A Few Clouds FEW030 62.6 50 64% 29.91 0.0
31 12:35 NW 5 8.00 Fair CLR 62.6 51.8 68% 29.92 0.0
31 12:15 Calm 8.00 Fair CLR 60.8 50 68% 29.93 0.0
31 11:55 Vrbl 3 7.00 Partly Cloudy SCT028 SCT032 60.8 51.8 72% 29.94 0.0
31 11:35 Calm 8.00 Mostly Cloudy BKN028 60.8 51.8 72% 29.94 0.0
31 11:15 Calm 7.00 A Few Clouds FEW028 60.8 51.8 72% 29.93 0.0
31 10:55 S 3 7.00 A Few Clouds FEW029 60.8 51.8 72% 29.93 0.0
31 10:35 S 5 6.00 Fair with Haze CLR 60.8 51.8 72% 29.93 0.0
31 10:15 Calm 7.00 Fair CLR 60.8 51.8 72% 29.93 0.0
31 09:55 Calm 6.00 Fair with Haze CLR 57.2 53.6 88% 29.93 0.0
31 09:35 Calm 7.00 Fair CLR 57.2 53.6 88% 29.94 0.0
31 09:15 Calm 7.00 Fair CLR 55.4 53.6 94% 29.94 0.0
31 08:55 Calm 6.00 Fog/Mist CLR 53.6 51.8 94% 29.93 0.0
31 08:35 E 3 7.00 Fair CLR 50 50 100% 29.93 0.0
31 08:15 Calm 7.00 Partly Cloudy SCT029 0 0 0% 29.92 0.0
Date Time (pst) Wind (mph) Vis. (mi.) Weather Sky Cond. Air Dwpt Max. Min. Relative Humidity Wind Chill (°F) Heat Index (°F) altimeter (in) sea level (mb) 1 hr 3 hr 6 hr
6 hour
Temperature (ºF) Pressure Precipitation (in)