| Point Forecast: 5 Miles SSW Saint Helena CA 38.44N 122.5W (Elev. 426 m) |
Last Update: 4:42 am PDT Jun 14, 2026 |
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| Date | 06/14 | 06/15 | ||||||||||||||||||||||
| Hour (PDT) | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 |
| Temperature (°C) | 18 | 20 | 22 | 24 | 26 | 26 | 26 | 26 | 24 | 23 | 22 | 19 | 18 | 18 | 17 | 16 | 16 | 15 | 16 | 16 | 16 | 17 | 17 | 18 |
| Dewpoint (°C) | 12 | 12 | 12 | 13 | 13 | 14 | 14 | 13 | 13 | 13 | 12 | 11 | 11 | 10 | 10 | 10 | 10 | 9 | 10 | 10 | 10 | 11 | 12 | 12 |
| Heat Index (°C) | 24 | 26 | 26 | 26 | 26 | 24 | ||||||||||||||||||
| Surface Wind (mph) | 3 | 5 | 5 | 6 | 6 | 7 | 7 | 7 | 8 | 7 | 7 | 7 | 7 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 3 | 3 | 3 | 5 |
| Wind Dir | WSW | WSW | SW | SW | SW | WSW | WSW | WSW | WSW | WSW | W | W | W | W | W | W | W | W | W | W | W | W | W | WSW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 4 | 3 | 1 | 0 | 1 | 2 | 2 | 2 | 1 | 2 | 3 | 4 | 6 | 6 | 5 | 9 | 10 | 9 | 8 | 6 | 7 | 7 | 7 | 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 (%) | 66 | 60 | 55 | 51 | 48 | 47 | 47 | 47 | 48 | 51 | 53 | 56 | 60 | 61 | 64 | 67 | 69 | 69 | 68 | 68 | 67 | 69 | 69 | 71 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 06/16 | |||||||||||||||||||||||
| Hour (PDT) | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 |
| Temperature (°C) | 19 | 21 | 23 | 24 | 26 | 27 | 27 | 26 | 25 | 24 | 22 | 19 | 18 | 17 | 17 | 16 | 16 | 15 | 14 | 14 | 14 | 14 | 15 | 17 |
| Dewpoint (°C) | 13 | 13 | 14 | 14 | 14 | 16 | 16 | 15 | 14 | 14 | 13 | 12 | 11 | 11 | 11 | 11 | 10 | 10 | 9 | 9 | 9 | 9 | 10 | 11 |
| Heat Index (°C) | 25 | 26 | 27 | 27 | 26 | 25 | 24 | |||||||||||||||||
| Surface Wind (mph) | 5 | 5 | 6 | 6 | 6 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 6 | 6 | 6 | 5 | 5 | 5 | 3 | 3 | 3 | 2 |
| Wind Dir | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | W | W | W | W | W | W | SW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 2 | 2 | 4 | 4 | 4 | 5 | 5 | 5 | 3 | 3 | 3 | 5 | 5 | 5 | 15 | 15 | 15 | 31 | 31 | 31 | 26 | 26 | 26 | 17 |
| 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 (%) | 68 | 63 | 57 | 53 | 51 | 50 | 50 | 50 | 51 | 56 | 58 | 61 | 63 | 65 | 67 | 69 | 71 | 72 | 71 | 70 | 69 | 70 | 72 | 71 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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