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| Point Forecast: 4 Miles W Lake Berryessa CA 38.58N 122.33W (Elev. 1138 ft) |
Last Update: 7:33 pm PDT May 17, 2021 |
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| Date | 05/17 | 05/18 | ||||||||||||||||||||||
| 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) | 63 | 59 | 56 | 53 | 52 | 51 | 49 | 48 | 48 | 47 | 50 | 56 | 61 | 66 | 70 | 73 | 75 | 76 | 78 | 78 | 77 | 74 | 70 | 64 |
| Dewpoint (°F) | 46 | 44 | 42 | 41 | 40 | 40 | 40 | 38 | 38 | 38 | 38 | 41 | 42 | 42 | 41 | 41 | 40 | 39 | 38 | 37 | 37 | 36 | 36 | 37 |
| Heat Index (°F) | 75 | 76 | 78 | 78 | 77 | |||||||||||||||||||
| Surface Wind (mph) | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 9 | 7 | 5 | 6 | 9 | 13 | 16 | 17 | 17 | 17 | 16 | 15 | 10 |
| Wind Dir | WNW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NNW | NNW | N | N | WNW | W | W | W | W | W | W | W | W | W |
| Gust | 21 | 23 | 22 | 22 | 22 | 20 | ||||||||||||||||||
| Sky Cover (%) | 8 | 3 | 4 | 7 | 7 | 6 | 3 | 5 | 9 | 6 | 3 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 1 | 2 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 55 | 58 | 60 | 63 | 64 | 65 | 69 | 68 | 68 | 71 | 64 | 55 | 48 | 42 | 36 | 32 | 28 | 26 | 24 | 23 | 24 | 25 | 29 | 37 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 05/19 | |||||||||||||||||||||||
| 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) | 58 | 54 | 50 | 48 | 47 | 46 | 44 | 43 | 43 | 44 | 46 | 49 | 54 | 59 | 63 | 67 | 69 | 71 | 72 | 72 | 71 | 68 | 64 | 60 |
| Dewpoint (°F) | 36 | 35 | 33 | 32 | 32 | 32 | 31 | 30 | 30 | 30 | 30 | 31 | 32 | 33 | 34 | 34 | 34 | 35 | 35 | 35 | 36 | 36 | 35 | 35 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 7 | 6 | 6 | 6 | 6 | 8 | 8 | 8 | 9 | 9 | 9 | 8 | 8 | 8 | 5 | 5 | 5 | 14 | 14 | 14 | 16 | 16 | 16 | 9 |
| Wind Dir | W | W | WNW | WNW | WNW | NW | NW | NW | NNW | NNW | NNW | N | N | N | WNW | WNW | WNW | W | W | W | NW | NW | NW | NW |
| Gust | 18 | 18 | 18 | 21 | 21 | 21 | ||||||||||||||||||
| Sky Cover (%) | 4 | 3 | 5 | 5 | 5 | 4 | 4 | 4 | 9 | 9 | 9 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 1 | 2 | 2 | 2 | 2 |
| 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 (%) | 43 | 50 | 52 | 54 | 56 | 58 | 59 | 60 | 60 | 58 | 55 | 50 | 44 | 38 | 33 | 30 | 28 | 27 | 26 | 26 | 27 | 30 | 34 | 39 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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