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| Point Forecast: 5 Miles W Napa Co. Airport CA 38.21N 122.38W (Elev. 3 ft) |
Last Update: 12:25 pm PDT Sep 29, 2023 |
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| Date | 09/29 | 09/30 | ||||||||||||||||||||||
| Hour (PDT) | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 |
| Temperature (°F) | 72 | 72 | 70 | 70 | 68 | 66 | 64 | 62 | 60 | 60 | 60 | 60 | 60 | 59 | 58 | 58 | 58 | 56 | 57 | 58 | 59 | 60 | 63 | 64 |
| Dewpoint (°F) | 59 | 61 | 60 | 59 | 60 | 57 | 57 | 56 | 56 | 57 | 57 | 56 | 56 | 55 | 55 | 55 | 54 | 54 | 54 | 55 | 55 | 56 | 57 | 57 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 13 | 15 | 14 | 15 | 16 | 16 | 15 | 14 | 14 | 14 | 14 | 13 | 11 | 13 | 10 | 10 | 9 | 8 | 8 | 7 | 6 | 6 | 6 | 6 |
| Wind Dir | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | WSW | WSW | W | W | W | W | W | W | SW |
| Gust | 18 | 21 | 22 | 22 | 24 | 24 | 23 | 22 | 22 | 22 | 22 | 18 | 18 | 18 | ||||||||||
| Sky Cover (%) | 56 | 87 | 83 | 68 | 84 | 79 | 75 | 70 | 57 | 57 | 44 | 57 | 67 | 57 | 57 | 64 | 63 | 71 | 69 | 57 | 80 | 71 | 73 | 57 |
| Precipitation Potential (%) | 5 | 5 | 5 | 5 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 22 | 22 | 22 | 22 | 22 | 22 | 35 | 35 |
| Relative Humidity (%) | 64 | 68 | 69 | 69 | 74 | 74 | 79 | 82 | 86 | 87 | 88 | 88 | 86 | 86 | 89 | 89 | 89 | 92 | 89 | 90 | 88 | 86 | 83 | 79 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | SChc | SChc | SChc | Chc | Chc |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 10/01 | |||||||||||||||||||||||
| Hour (PDT) | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 |
| Temperature (°F) | 65 | 67 | 66 | 67 | 67 | 66 | 64 | 62 | 61 | 59 | 58 | 57 | 56 | 55 | 55 | 54 | 54 | 54 | 54 | 54 | 58 | 63 | 67 | 70 |
| Dewpoint (°F) | 57 | 59 | 58 | 57 | 57 | 57 | 56 | 56 | 55 | 55 | 54 | 54 | 53 | 52 | 51 | 51 | 51 | 51 | 52 | 51 | 51 | 51 | 50 | 50 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 6 | 6 | 6 | 7 | 7 | 6 | 6 | 6 | 5 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 7 | 7 |
| Wind Dir | S | S | SSE | S | S | SSE | SSW | SW | SW | WSW | W | W | W | W | W | W | SSW | SSW | SSW | NNW | NNW | NNW | N | N |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 62 | 64 | 66 | 61 | 57 | 41 | 17 | 17 | 12 | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 34 | 34 | 34 | 17 | 17 | 17 | 9 | 9 |
| Precipitation Potential (%) | 35 | 35 | 35 | 35 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 |
| Relative Humidity (%) | 76 | 75 | 74 | 71 | 70 | 72 | 75 | 80 | 82 | 85 | 87 | 88 | 88 | 88 | 89 | 89 | 90 | 92 | 92 | 88 | 78 | 66 | 54 | 48 |
| Rain | Chc | Chc | Chc | Chc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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