| Point Forecast: 8 Miles NNW Bethel Island CA 38.16N 121.7W (Elev. 30 m) |
Last Update: 2:00 pm PDT Aug 14, 2026 |
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| Date | 08/14 | 08/15 | ||||||||||||||||||||||
| 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 (°C) | 18 | 17 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 14 | 15 | 16 | 17 | 18 | 20 | 22 | 24 | 26 | 27 | 27 | 27 | 26 | 24 | 21 |
| Dewpoint (°C) | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 15 | 16 | 16 | 16 | 15 | 15 | 15 | 16 | 16 | 14 |
| Heat Index (°C) | 24 | 26 | 27 | 27 | 27 | 26 | 24 | |||||||||||||||||
| Surface Wind (mph) | 15 | 15 | 14 | 13 | 13 | 13 | 13 | 11 | 11 | 11 | 11 | 13 | 13 | 11 | 11 | 11 | 11 | 11 | 11 | 13 | 14 | 14 | 14 | 14 |
| Wind Dir | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | W | W | W | W | WSW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 5 | 5 | 6 | 2 | 5 | 49 | 36 | 48 | 41 | 41 | 40 | 42 | 13 | 3 | 0 | 0 | 0 | 0 | 3 | 1 | 7 | 7 | 7 | 20 |
| 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 (%) | 77 | 82 | 85 | 87 | 88 | 86 | 88 | 88 | 88 | 90 | 88 | 86 | 83 | 78 | 72 | 65 | 59 | 52 | 49 | 47 | 48 | 53 | 58 | 66 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 08/16 | |||||||||||||||||||||||
| 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 (°C) | 19 | 18 | 17 | 16 | 16 | 16 | 15 | 15 | 15 | 14 | 14 | 15 | 17 | 19 | 22 | 24 | 27 | 28 | 29 | 29 | 29 | 27 | 25 | 22 |
| Dewpoint (°C) | 13 | 13 | 13 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 14 |
| Heat Index (°C) | 24 | 27 | 28 | 29 | 29 | 28 | 27 | 25 | ||||||||||||||||
| Surface Wind (mph) | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 13 | 13 | 13 | 11 | 11 | 11 | 10 | 10 | 10 | 14 | 14 | 14 | 16 |
| Wind Dir | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | WSW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 20 | 20 | 22 | 22 | 22 | 21 | 21 | 21 | 15 | 15 | 15 | 27 | 27 | 27 | 6 | 6 | 6 | 12 | 12 | 12 | 22 | 22 | 22 | 21 |
| 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 (%) | 71 | 76 | 82 | 86 | 87 | 87 | 90 | 90 | 90 | 92 | 91 | 88 | 82 | 74 | 66 | 57 | 49 | 43 | 40 | 39 | 41 | 45 | 52 | 59 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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