| Point Forecast: 2 Miles WSW Portola Valley CA 37.37N 122.25W (Elev. 1473 ft) |
Last Update: 1:26 pm PDT Jun 15, 2025 |
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| Date | 06/15 | 06/16 | ||||||||||||||||||||||
| Hour (PDT) | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| Temperature (°F) | 55 | 53 | 52 | 52 | 52 | 51 | 50 | 49 | 48 | 49 | 50 | 50 | 53 | 54 | 56 | 57 | 59 | 60 | 61 | 61 | 60 | 59 | 57 | 54 |
| Dewpoint (°F) | 43 | 42 | 42 | 42 | 42 | 41 | 41 | 42 | 42 | 42 | 43 | 44 | 46 | 47 | 47 | 47 | 48 | 48 | 47 | 47 | 47 | 47 | 46 | 44 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 10 | 9 | 9 | 9 | 8 | 8 | 9 | 11 | 13 | 11 | 11 | 9 | 9 | 10 | 11 | 14 | 14 | 16 | 15 | 14 | 13 | 16 | 15 | 14 |
| Wind Dir | WSW | WSW | WSW | WSW | W | W | WSW | WSW | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W |
| Gust | 18 | 18 | 18 | 22 | 22 | 22 | 22 | 22 | 22 | 21 | ||||||||||||||
| Sky Cover (%) | 15 | 12 | 11 | 12 | 14 | 18 | 22 | 29 | 32 | 49 | 37 | 31 | 34 | 20 | 10 | 8 | 7 | 6 | 6 | 6 | 7 | 8 | 10 | 11 |
| Precipitation Potential (%) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 64 | 67 | 69 | 68 | 68 | 70 | 73 | 75 | 78 | 77 | 77 | 81 | 78 | 76 | 71 | 69 | 66 | 64 | 61 | 60 | 61 | 64 | 67 | 69 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 06/17 | |||||||||||||||||||||||
| Hour (PDT) | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| Temperature (°F) | 52 | 51 | 50 | 50 | 49 | 49 | 49 | 49 | 50 | 50 | 51 | 52 | 54 | 58 | 60 | 63 | 65 | 66 | 66 | 66 | 65 | 63 | 60 | 58 |
| Dewpoint (°F) | 42 | 41 | 41 | 40 | 40 | 39 | 40 | 40 | 41 | 42 | 43 | 44 | 46 | 46 | 47 | 48 | 49 | 50 | 50 | 49 | 49 | 49 | 49 | 48 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 14 | 13 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 11 | 11 | 11 | 13 | 13 | 13 | 10 |
| Wind Dir | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | W | W | W | W | W | W | W | W | W | W | W | W | WSW |
| Gust | 21 | 21 | 20 | 20 | 20 | 20 | 20 | 20 | 21 | 21 | 21 | |||||||||||||
| Sky Cover (%) | 11 | 8 | 5 | 5 | 5 | 8 | 8 | 8 | 8 | 8 | 8 | 12 | 12 | 12 | 3 | 3 | 3 | 2 | 2 | 2 | 1 | 1 | 1 | 4 |
| 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 (%) | 67 | 68 | 70 | 70 | 69 | 69 | 70 | 71 | 72 | 74 | 76 | 75 | 71 | 66 | 61 | 58 | 57 | 56 | 54 | 54 | 56 | 60 | 65 | 69 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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