| Point Forecast: Washington Pass WA 48.53N 120.65W (Elev. 5617 ft) |
Last Update: 4:31 pm PDT Sep 8, 2026 |
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| Date | 09/08 | 09/09 | ||||||||||||||||||||||
| 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 (°F) | 46 | 45 | 44 | 43 | 43 | 42 | 42 | 42 | 41 | 41 | 41 | 43 | 48 | 54 | 58 | 62 | 64 | 65 | 65 | 65 | 63 | 61 | 58 | 52 |
| Dewpoint (°F) | 38 | 38 | 38 | 37 | 37 | 35 | 35 | 35 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 32 | 32 | 33 | 34 | 35 | 37 | 38 | 40 | 39 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 2 | 3 | 5 | 6 | 7 | 8 | 8 | 9 | 8 | 8 | 8 | 7 |
| Wind Dir | W | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | W | W | W | W | W |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 7 | 4 | 4 | 6 | 9 | 10 | 7 | 6 | 6 | 17 | 21 | 22 | 5 | 23 | 32 | 53 | 53 | 63 | 73 | 76 | 76 | 76 | 76 | 90 |
| Precipitation Potential (%) | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 74 | 76 | 78 | 78 | 78 | 77 | 76 | 76 | 74 | 73 | 72 | 67 | 56 | 45 | 38 | 32 | 30 | 30 | 32 | 33 | 38 | 43 | 51 | 61 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 09/10 | |||||||||||||||||||||||
| 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 (°F) | 50 | 49 | 48 | 48 | 48 | 47 | 47 | 47 | 46 | 46 | 45 | 45 | 46 | 47 | 49 | 51 | 52 | 53 | 53 | 52 | 50 | 47 | 44 | 41 |
| Dewpoint (°F) | 38 | 38 | 37 | 38 | 38 | 37 | 37 | 38 | 37 | 38 | 39 | 39 | 39 | 39 | 39 | 37 | 35 | 33 | 32 | 32 | 33 | 33 | 33 | 33 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 11 | 11 | 11 | 13 | 13 | 13 | 11 | 11 | 11 | 8 |
| Wind Dir | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 90 | 90 | 62 | 62 | 62 | 74 | 74 | 74 | 77 | 77 | 77 | 45 | 45 | 45 | 27 | 27 | 27 | 23 | 23 | 23 | 17 | 17 | 17 | 38 |
| Precipitation Potential (%) | 0 | 0 | 5 | 5 | 5 | 5 | 5 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 64 | 65 | 66 | 67 | 68 | 68 | 69 | 71 | 71 | 74 | 77 | 79 | 77 | 73 | 67 | 59 | 51 | 46 | 45 | 47 | 52 | 58 | 66 | 74 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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