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| Point Forecast: Half Moon Bay CA 37.48N 122.42W (Elev. 397 ft) |
Last Update: 8:41 pm PDT Sep 20, 2021 |
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| Date | 09/20 | 09/21 | ||||||||||||||||||||||
| Hour (PDT) | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| Temperature (°F) | 64 | 64 | 63 | 62 | 61 | 61 | 60 | 60 | 60 | 63 | 69 | 74 | 79 | 82 | 83 | 83 | 83 | 82 | 80 | 76 | 71 | 68 | 65 | 64 |
| Dewpoint (°F) | 47 | 46 | 46 | 45 | 45 | 45 | 44 | 44 | 44 | 46 | 51 | 54 | 56 | 57 | 58 | 58 | 58 | 59 | 59 | 60 | 60 | 59 | 58 | 57 |
| Heat Index (°F) | 75 | 75 | 76 | 75 | 75 | |||||||||||||||||||
| Surface Wind (mph) | 8 | 6 | 7 | 9 | 11 | 11 | 11 | 10 | 11 | 11 | 7 | 5 | 7 | 11 | 11 | 11 | 10 | 10 | 10 | 8 | 6 | 3 | 2 | 3 |
| Wind Dir | NNE | NE | ENE | E | E | E | E | E | E | E | E | SSW | SW | SSW | SSW | SSW | SSW | SSW | SSW | SSW | SW | SW | SW | SW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 32 | 30 | 25 | 19 | 27 | 27 | 32 | 21 | 20 | 8 | 18 | 22 | 23 | 26 | 22 | 24 | 24 | 23 | 32 | 31 | 43 | 55 | 55 | 58 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 54 | 54 | 54 | 54 | 55 | 55 | 55 | 56 | 55 | 55 | 53 | 50 | 46 | 43 | 43 | 43 | 43 | 46 | 49 | 57 | 67 | 73 | 80 | 78 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 09/22 | |||||||||||||||||||||||
| Hour (PDT) | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| Temperature (°F) | 64 | 63 | 61 | 60 | 57 | 57 | 57 | 56 | 56 | 57 | 59 | 62 | 64 | 66 | 66 | 66 | 66 | 66 | 65 | 63 | 61 | 59 | 58 | 56 |
| Dewpoint (°F) | 56 | 55 | 54 | 53 | 51 | 51 | 51 | 51 | 51 | 52 | 53 | 55 | 56 | 57 | 57 | 57 | 56 | 56 | 55 | 56 | 56 | 55 | 54 | 52 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 3 | 3 | 3 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 5 | 5 | 5 |
| Wind Dir | SW | SW | SW | WSW | WSW | WSW | SW | SW | SW | SW | SW | SW | WSW | WSW | WSW | W | W | W | W | W | W | W | W | W |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 61 | 61 | 61 | 55 | 55 | 55 | 67 | 67 | 67 | 39 | 39 | 39 | 57 | 57 | 57 | 52 | 52 | 52 | 55 | 55 | 55 | 72 | 72 | 72 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 76 | 75 | 76 | 77 | 79 | 80 | 81 | 82 | 84 | 84 | 82 | 79 | 76 | 74 | 72 | 71 | 70 | 70 | 72 | 77 | 82 | 87 | 88 | 88 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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