| Point Forecast: 5 Miles W Napa Co. Airport CA 38.21N 122.38W (Elev. 3 ft) |
Last Update: 2:42 pm PDT Jul 13, 2025 |
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| Date | 07/13 | 07/14 | ||||||||||||||||||||||
| Hour (PDT) | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
| Temperature (°F) | 70 | 66 | 62 | 59 | 58 | 56 | 56 | 55 | 54 | 54 | 54 | 54 | 55 | 57 | 60 | 64 | 68 | 73 | 75 | 77 | 79 | 79 | 78 | 76 |
| Dewpoint (°F) | 57 | 56 | 55 | 55 | 54 | 53 | 53 | 52 | 52 | 52 | 51 | 52 | 52 | 53 | 55 | 56 | 57 | 59 | 60 | 60 | 61 | 60 | 59 | 58 |
| Heat Index (°F) | 75 | 77 | 81 | 79 | 78 | 77 | ||||||||||||||||||
| Surface Wind (mph) | 8 | 7 | 6 | 6 | 6 | 5 | 5 | 3 | 3 | 3 | 2 | 2 | 2 | 3 | 5 | 6 | 6 | 7 | 8 | 9 | 10 | 10 | 10 | 9 |
| Wind Dir | WSW | WSW | WSW | WSW | WSW | WSW | WSW | W | W | W | W | W | WSW | WSW | SW | SW | SSW | SSW | SSW | SSW | SSW | SW | WSW | WSW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 1 | 3 | 3 | 9 | 13 | 22 | 36 | 43 | 51 | 60 | 66 | 70 | 73 | 63 | 52 | 23 | 11 | 4 | 1 | 1 | 1 | 0 | 1 | 0 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 |
| Relative Humidity (%) | 61 | 70 | 78 | 85 | 86 | 89 | 90 | 91 | 92 | 92 | 92 | 91 | 91 | 87 | 83 | 75 | 70 | 63 | 59 | 56 | 54 | 52 | 52 | 53 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/15 | |||||||||||||||||||||||
| Hour (PDT) | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
| Temperature (°F) | 72 | 66 | 61 | 59 | 58 | 56 | 56 | 55 | 54 | 54 | 54 | 54 | 55 | 56 | 58 | 61 | 63 | 65 | 67 | 69 | 70 | 71 | 70 | 68 |
| Dewpoint (°F) | 57 | 56 | 55 | 54 | 54 | 54 | 53 | 53 | 52 | 52 | 52 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 59 | 60 | 60 | 60 | 59 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 8 | 8 | 8 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 6 | 6 | 6 | 9 | 9 | 9 | 11 | 11 | 11 | 10 | 10 |
| Wind Dir | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW |
| Gust | 20 | 20 | 20 | 18 | 18 | |||||||||||||||||||
| Sky Cover (%) | 1 | 3 | 4 | 16 | 27 | 27 | 27 | 61 | 61 | 61 | 79 | 79 | 79 | 77 | 77 | 77 | 34 | 34 | 34 | 7 | 7 | 7 | 9 | 9 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 3 |
| Relative Humidity (%) | 59 | 70 | 80 | 86 | 88 | 90 | 91 | 92 | 93 | 93 | 93 | 93 | 92 | 90 | 88 | 85 | 81 | 77 | 73 | 70 | 68 | 68 | 69 | 72 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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