| Point Forecast: 8 Miles SSW Chinook Pass WA 46.75N 121.56W (Elev. 2313 ft) |
Last Update: 11:26 am PDT Aug 17, 2026 |
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| Date | 08/17 | 08/18 | ||||||||||||||||||||||
| Hour (PDT) | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 |
| Temperature (°F) | 88 | 88 | 87 | 87 | 87 | 84 | 78 | 75 | 68 | 65 | 63 | 61 | 59 | 58 | 56 | 55 | 55 | 54 | 53 | 55 | 59 | 65 | 72 | 78 |
| Dewpoint (°F) | 51 | 51 | 54 | 54 | 57 | 58 | 60 | 60 | 57 | 57 | 56 | 55 | 54 | 54 | 52 | 50 | 50 | 49 | 49 | 50 | 52 | 54 | 56 | 58 |
| Heat Index (°F) | 85 | 85 | 85 | 85 | 86 | 84 | 78 | 75 | 78 | |||||||||||||||
| Surface Wind (mph) | 5 | 5 | 6 | 6 | 5 | 5 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 3 |
| Wind Dir | SSW | SSW | SSW | SSW | SSW | SSW | S | S | SSE | SSE | S | SE | ESE | E | NE | N | NNW | NW | N | SSW | SSW | SSW | SSW | SSW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 5 | 5 | 7 | 6 | 4 | 7 | 8 | 9 | 14 | 16 | 14 | 30 | 47 | 53 | 53 | 58 | 58 | 55 | 54 | 54 | 38 | 18 | 22 | 29 |
| Precipitation Potential (%) | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 28 | 28 | 32 | 33 | 36 | 42 | 54 | 60 | 68 | 74 | 79 | 80 | 83 | 85 | 86 | 84 | 82 | 83 | 85 | 83 | 78 | 67 | 58 | 50 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 08/19 | |||||||||||||||||||||||
| Hour (PDT) | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 |
| Temperature (°F) | 84 | 86 | 83 | 84 | 84 | 79 | 73 | 70 | 66 | 64 | 62 | 60 | 59 | 57 | 55 | 55 | 55 | 53 | 53 | 55 | 59 | 64 | 70 | 76 |
| Dewpoint (°F) | 58 | 59 | 58 | 58 | 58 | 57 | 57 | 56 | 56 | 56 | 55 | 53 | 53 | 51 | 49 | 49 | 48 | 46 | 47 | 49 | 51 | 52 | 54 | 55 |
| Heat Index (°F) | 83 | 85 | 83 | 83 | 84 | 79 | 76 | |||||||||||||||||
| Surface Wind (mph) | 5 | 5 | 6 | 6 | 5 | 5 | 5 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 |
| Wind Dir | SSW | SSW | SW | SW | WSW | WSW | WSW | WSW | WSW | WSW | W | W | W | N | N | N | NNE | NNE | NNE | W | W | W | WSW | WSW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 23 | 14 | 17 | 20 | 18 | 18 | 18 | 20 | 20 | 20 | 34 | 34 | 34 | 42 | 42 | 42 | 54 | 54 | 54 | 36 | 36 | 36 | 19 | 19 |
| Precipitation Potential (%) | 2 | 2 | 2 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 41 | 40 | 42 | 41 | 42 | 47 | 58 | 62 | 70 | 75 | 78 | 78 | 79 | 80 | 81 | 79 | 77 | 78 | 79 | 79 | 74 | 66 | 57 | 49 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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