| Point Forecast: 5 Miles W Napa Co. Airport CA 38.21N 122.38W (Elev. 3 ft) |
Last Update: 3:29 am PDT May 4, 2024 |
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| Date | 05/04 | 05/05 | ||||||||||||||||||||||
| Hour (PDT) | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 |
| Temperature (°F) | 50 | 51 | 52 | 51 | 51 | 51 | 54 | 52 | 54 | 54 | 55 | 55 | 54 | 52 | 50 | 48 | 46 | 46 | 45 | 44 | 43 | 43 | 42 | 41 |
| Dewpoint (°F) | 50 | 50 | 51 | 50 | 50 | 50 | 52 | 49 | 49 | 47 | 46 | 44 | 44 | 43 | 43 | 42 | 42 | 41 | 41 | 41 | 40 | 39 | 39 | 39 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 14 | 18 | 18 | 15 | 14 | 14 | 14 | 13 | 13 | 14 | 15 | 17 | 15 | 14 | 14 | 13 | 11 | 10 | 9 | 9 | 9 | 9 | 9 | 8 |
| Wind Dir | SSW | SSW | SW | WSW | W | W | W | WSW | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W |
| Gust | 22 | 26 | 26 | 23 | 22 | 21 | 20 | 18 | 20 | 21 | 22 | 25 | 23 | 22 | 20 | 20 | ||||||||
| Sky Cover (%) | 99 | 99 | 99 | 99 | 99 | 92 | 89 | 87 | 87 | 87 | 87 | 57 | 23 | 33 | 21 | 13 | 13 | 14 | 11 | 9 | 8 | 18 | 9 | 8 |
| Precipitation Potential (%) | 78 | 89 | 95 | 94 | 94 | 89 | 86 | 60 | 28 | 29 | 27 | 2 | 3 | 4 | 3 | 2 | 2 | 2 | 3 | 2 | 2 | 2 | 2 | 1 |
| Relative Humidity (%) | 98 | 98 | 98 | 96 | 96 | 95 | 93 | 90 | 85 | 76 | 71 | 66 | 68 | 69 | 76 | 80 | 83 | 85 | 86 | 87 | 87 | 88 | 91 | 92 |
| Rain | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 05/06 | |||||||||||||||||||||||
| Hour (PDT) | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 |
| Temperature (°F) | 42 | 43 | 45 | 50 | 54 | 57 | 59 | 61 | 61 | 62 | 61 | 60 | 58 | 55 | 52 | 50 | 49 | 48 | 46 | 45 | 44 | 43 | 42 | 43 |
| Dewpoint (°F) | 39 | 39 | 39 | 41 | 42 | 42 | 42 | 42 | 43 | 43 | 43 | 43 | 43 | 43 | 42 | 42 | 42 | 42 | 42 | 41 | 41 | 41 | 41 | 41 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 8 | 9 | 9 | 8 | 7 | 7 | 7 | 7 | 10 | 10 | 10 | 13 | 13 | 13 | 10 | 10 | 10 | 7 | 7 | 7 | 6 | 6 | 6 | 5 |
| Wind Dir | W | W | WNW | WNW | WNW | WNW | WNW | WNW | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W |
| Gust | 18 | 18 | 18 | |||||||||||||||||||||
| Sky Cover (%) | 5 | 4 | 18 | 10 | 7 | 4 | 4 | 4 | 19 | 19 | 19 | 11 | 11 | 11 | 7 | 7 | 7 | 6 | 6 | 6 | 7 | 7 | 7 | 10 |
| Precipitation Potential (%) | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 91 | 87 | 79 | 72 | 64 | 57 | 53 | 51 | 50 | 50 | 52 | 54 | 58 | 63 | 69 | 73 | 78 | 82 | 85 | 88 | 90 | 92 | 93 | 93 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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