| Point Forecast: 8 Miles SSW Chinook Pass WA 46.75N 121.56W (Elev. 705 m) |
Last Update: 12:35 am PDT Aug 16, 2026 |
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| Date | 08/16 | 08/17 | ||||||||||||||||||||||
| Hour (PDT) | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 |
| Temperature (°C) | 18 | 21 | 25 | 28 | 29 | 28 | 28 | 28 | 26 | 22 | 21 | 19 | 18 | 17 | 16 | 16 | 15 | 14 | 14 | 14 | 13 | 13 | 14 | 16 |
| Dewpoint (°C) | 15 | 16 | 16 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 15 | 14 | 14 | 14 | 13 | 13 | 13 | 12 | 11 | 11 | 11 | 10 | 11 | 12 |
| Heat Index (°C) | 25 | 28 | 28 | 28 | 28 | 28 | 26 | |||||||||||||||||
| Surface Wind (mph) | 1 | 2 | 3 | 3 | 5 | 5 | 5 | 5 | 3 | 3 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Wind Dir | SSW | SSW | SSW | SSW | SSW | SSW | SSW | SSW | SSW | SSW | S | E | E | E | NE | N | NE | NE | NE | NNE | NNE | NNE | ESE | ESE |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 39 | 33 | 25 | 16 | 20 | 24 | 22 | 23 | 31 | 41 | 64 | 56 | 58 | 55 | 63 | 69 | 80 | 80 | 87 | 89 | 89 | 89 | 71 | 71 |
| Precipitation Potential (%) | 0 | 1 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 85 | 73 | 58 | 43 | 40 | 42 | 43 | 44 | 49 | 61 | 67 | 73 | 78 | 82 | 83 | 86 | 87 | 87 | 84 | 82 | 82 | 84 | 83 | 74 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 08/18 | |||||||||||||||||||||||
| Hour (PDT) | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 |
| Temperature (°C) | 20 | 23 | 27 | 31 | 32 | 31 | 31 | 31 | 28 | 26 | 24 | 22 | 19 | 18 | 17 | 16 | 15 | 14 | 14 | 13 | 13 | 13 | 14 | 16 |
| Dewpoint (°C) | 12 | 12 | 12 | 12 | 12 | 13 | 14 | 16 | 16 | 17 | 17 | 17 | 16 | 14 | 14 | 13 | 13 | 12 | 12 | 11 | 11 | 12 | 12 | 12 |
| Heat Index (°C) | 27 | 30 | 31 | 30 | 30 | 31 | 28 | 26 | 24 | |||||||||||||||
| Surface Wind (mph) | 1 | 2 | 2 | 2 | 6 | 6 | 6 | 6 | 6 | 6 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Wind Dir | ESE | SW | SW | SW | SW | SW | SW | SW | SW | SW | W | W | W | WNW | WNW | WNW | WNW | WNW | WNW | NW | NW | NW | W | W |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 71 | 37 | 37 | 37 | 17 | 17 | 17 | 18 | 18 | 18 | 37 | 37 | 37 | 34 | 34 | 34 | 49 | 49 | 49 | 46 | 46 | 46 | 35 | 35 |
| Precipitation Potential (%) | 0 | 0 | 0 | 1 | 3 | 2 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Relative Humidity (%) | 60 | 49 | 40 | 31 | 31 | 35 | 36 | 40 | 46 | 56 | 66 | 73 | 78 | 82 | 85 | 86 | 87 | 87 | 86 | 86 | 88 | 90 | 89 | 82 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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