| Point Forecast: 4 Miles NNW Chinook Pass WA 46.92N 121.55W (Elev. 3245 ft) |
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 (°F) | 60 | 66 | 70 | 72 | 72 | 72 | 70 | 69 | 67 | 64 | 61 | 58 | 57 | 55 | 54 | 53 | 53 | 53 | 52 | 52 | 51 | 50 | 53 | 57 |
| Dewpoint (°F) | 55 | 55 | 55 | 53 | 53 | 54 | 55 | 56 | 58 | 57 | 56 | 54 | 54 | 53 | 52 | 50 | 49 | 49 | 48 | 47 | 47 | 46 | 49 | 50 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 1 | 2 | 2 | 3 | 5 | 6 | 7 | 7 | 7 | 6 | 5 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 1 | 2 | 2 | 2 | 1 | 1 |
| Wind Dir | NNE | N | WNW | WNW | NW | N | N | N | N | N | N | N | N | NW | NNW | W | W | NW | NE | SSW | SSW | SSW | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 39 | 30 | 30 | 31 | 30 | 34 | 38 | 41 | 55 | 65 | 73 | 74 | 71 | 62 | 69 | 67 | 80 | 85 | 86 | 83 | 83 | 83 | 71 | 71 |
| Precipitation Potential (%) | 0 | 1 | 2 | 5 | 3 | 4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 85 | 68 | 59 | 52 | 52 | 53 | 58 | 64 | 72 | 77 | 84 | 88 | 90 | 93 | 93 | 91 | 87 | 86 | 85 | 84 | 86 | 86 | 86 | 76 |
| 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 (°F) | 66 | 73 | 77 | 78 | 78 | 78 | 76 | 76 | 71 | 68 | 66 | 63 | 60 | 57 | 55 | 55 | 54 | 53 | 52 | 52 | 51 | 50 | 52 | 57 |
| Dewpoint (°F) | 52 | 51 | 52 | 51 | 53 | 55 | 57 | 60 | 59 | 59 | 60 | 59 | 56 | 54 | 52 | 51 | 50 | 49 | 48 | 48 | 48 | 48 | 49 | 51 |
| Heat Index (°F) | 77 | 78 | 78 | 78 | 76 | 76 | ||||||||||||||||||
| Surface Wind (mph) | 1 | 3 | 3 | 3 | 7 | 7 | 7 | 8 | 8 | 8 | 5 | 5 | 5 | 3 | 3 | 3 | 3 | 3 | 3 | 5 | 5 | 5 | 3 | 3 |
| Wind Dir | S | WNW | WNW | WNW | NW | NW | NW | NW | NW | NW | WNW | WNW | WNW | W | W | W | W | W | W | W | W | W | W | W |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 71 | 61 | 61 | 61 | 13 | 13 | 13 | 16 | 16 | 16 | 44 | 44 | 44 | 39 | 39 | 39 | 51 | 51 | 51 | 43 | 43 | 43 | 27 | 27 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 2 | 2 | 6 | 4 | 4 | 4 | 4 | 4 | 4 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Relative Humidity (%) | 61 | 46 | 42 | 39 | 42 | 45 | 51 | 58 | 66 | 74 | 81 | 86 | 88 | 89 | 89 | 87 | 86 | 86 | 86 | 86 | 89 | 92 | 90 | 79 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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