| Point Forecast: 4 Miles S Portola Valley CA 37.3N 122.23W (Elev. 1447 ft) |
Last Update: 1:26 pm PDT Jun 17, 2024 |
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| Date | 06/17 | 06/18 | ||||||||||||||||||||||
| Hour (PDT) | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| Temperature (°F) | 69 | 67 | 64 | 60 | 58 | 57 | 58 | 57 | 56 | 55 | 53 | 52 | 52 | 51 | 53 | 56 | 59 | 63 | 66 | 68 | 68 | 68 | 69 | 67 |
| Dewpoint (°F) | 43 | 42 | 41 | 40 | 40 | 41 | 40 | 41 | 41 | 42 | 41 | 41 | 42 | 42 | 43 | 44 | 45 | 48 | 49 | 50 | 50 | 49 | 50 | 48 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 8 | 7 | 7 | 6 | 6 | 5 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 5 | 6 | 6 | 6 | 7 | 7 | 7 |
| Wind Dir | WNW | WNW | NW | NW | NW | NNW | NNW | N | N | N | N | N | N | N | N | NNW | NW | NW | WNW | WNW | W | W | W | W |
| Gust | 21 | 21 | 18 | 18 | ||||||||||||||||||||
| Sky Cover (%) | 19 | 8 | 4 | 14 | 35 | 28 | 23 | 24 | 18 | 15 | 16 | 18 | 14 | 18 | 11 | 28 | 31 | 26 | 45 | 49 | 35 | 45 | 39 | 37 |
| 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 (%) | 39 | 41 | 43 | 49 | 52 | 54 | 51 | 56 | 59 | 61 | 65 | 65 | 69 | 71 | 70 | 65 | 60 | 58 | 54 | 53 | 52 | 52 | 50 | 50 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 06/19 | |||||||||||||||||||||||
| Hour (PDT) | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| Temperature (°F) | 64 | 62 | 57 | 54 | 51 | 50 | 50 | 49 | 49 | 48 | 48 | 47 | 48 | 48 | 49 | 51 | 53 | 56 | 59 | 61 | 63 | 64 | 64 | 63 |
| Dewpoint (°F) | 48 | 47 | 45 | 44 | 44 | 44 | 44 | 44 | 44 | 44 | 44 | 45 | 45 | 45 | 46 | 46 | 48 | 49 | 50 | 51 | 52 | 52 | 53 | 52 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 7 | 6 | 5 | 5 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 5 | 6 | 6 | 6 | 6 | 6 | 6 |
| Wind Dir | W | W | WNW | WNW | WNW | WNW | WNW | WNW | WNW | WNW | WNW | W | W | W | W | W | W | WNW | WNW | WNW | WNW | WNW | WNW | WNW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 16 | 10 | 16 | 34 | 46 | 48 | 41 | 39 | 38 | 36 | 39 | 42 | 45 | 44 | 42 | 41 | 37 | 32 | 28 | 29 | 31 | 32 | 34 | 35 |
| 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 (%) | 56 | 59 | 64 | 71 | 78 | 80 | 80 | 82 | 84 | 86 | 88 | 90 | 91 | 90 | 87 | 84 | 80 | 77 | 74 | 70 | 68 | 67 | 66 | 68 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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