| Point Forecast: Mount St Helens WA 46.2N 122.18W (Elev. 5997 ft) |
Last Update: 4:45 am PDT Jul 14, 2025 |
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| Date | 07/14 | 07/15 | ||||||||||||||||||||||
| Hour (PDT) | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 |
| Temperature (°F) | 56 | 55 | 54 | 56 | 57 | 57 | 58 | 58 | 59 | 58 | 59 | 58 | 59 | 57 | 57 | 55 | 53 | 51 | 49 | 49 | 49 | 48 | 49 | 49 |
| Dewpoint (°F) | 41 | 41 | 40 | 41 | 42 | 42 | 44 | 44 | 47 | 45 | 45 | 43 | 44 | 42 | 42 | 41 | 39 | 37 | 36 | 37 | 36 | 34 | 34 | 34 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 9 | 10 | 10 | 11 | 13 | 14 | 15 | 15 | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 16 | 15 | 14 | 11 | 11 | 11 | 10 | 11 |
| Wind Dir | WNW | WNW | WNW | W | WNW | W | WNW | WNW | WNW | WNW | WNW | WNW | WNW | WNW | WNW | NW | NW | NW | NNW | N | NNW | N | NNE | N |
| Gust | 18 | 20 | 22 | 23 | 24 | 24 | 24 | 25 | 24 | 24 | 24 | 24 | 22 | 21 | 18 | |||||||||
| Sky Cover (%) | 10 | 17 | 21 | 22 | 15 | 16 | 13 | 12 | 15 | 13 | 7 | 5 | 4 | 5 | 5 | 9 | 17 | 23 | 20 | 24 | 26 | 24 | 17 | 12 |
| Precipitation Potential (%) | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 58 | 58 | 58 | 58 | 58 | 58 | 59 | 60 | 64 | 63 | 59 | 58 | 58 | 58 | 58 | 58 | 58 | 58 | 61 | 62 | 60 | 59 | 57 | 57 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/16 | |||||||||||||||||||||||
| Hour (PDT) | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 |
| Temperature (°F) | 49 | 48 | 48 | 51 | 53 | 55 | 58 | 60 | 62 | 64 | 66 | 66 | 67 | 67 | 66 | 66 | 65 | 63 | 61 | 59 | 58 | 58 | 57 | 56 |
| Dewpoint (°F) | 35 | 35 | 33 | 35 | 37 | 37 | 39 | 41 | 43 | 46 | 47 | 47 | 48 | 47 | 46 | 46 | 45 | 44 | 41 | 39 | 37 | 37 | 35 | 33 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 11 | 11 | 10 | 9 | 9 | 8 | 7 | 6 | 6 | 6 | 7 | 7 | 7 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 14 | 14 |
| Wind Dir | N | NNE | N | NNE | NE | NE | NNE | NNE | NNE | NNE | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | ENE | ENE | ENE | E | E |
| Gust | 18 | 18 | ||||||||||||||||||||||
| Sky Cover (%) | 10 | 10 | 10 | 10 | 2 | 2 | 2 | 3 | 3 | 3 | 11 | 11 | 11 | 11 | 11 | 11 | 17 | 17 | 17 | 10 | 10 | 10 | 3 | 3 |
| 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 (%) | 58 | 60 | 56 | 54 | 54 | 51 | 50 | 50 | 50 | 51 | 51 | 50 | 50 | 49 | 49 | 49 | 49 | 49 | 48 | 48 | 46 | 45 | 43 | 42 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
