| Point Forecast: 17 Miles ENE Mount St Helens WA 46.27N 121.86W (Elev. 4833 ft) |
Last Update: 3:21 am PDT Jul 14, 2025 |
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| Date | 07/14 | 07/15 | ||||||||||||||||||||||
| Hour (PDT) | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 |
| Temperature (°F) | 57 | 56 | 55 | 54 | 56 | 58 | 59 | 63 | 64 | 65 | 66 | 66 | 66 | 67 | 65 | 63 | 61 | 55 | 53 | 51 | 50 | 50 | 50 | 49 |
| Dewpoint (°F) | 50 | 49 | 49 | 48 | 48 | 49 | 48 | 50 | 50 | 51 | 51 | 49 | 48 | 49 | 47 | 45 | 46 | 43 | 45 | 45 | 45 | 44 | 45 | 44 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 8 | 7 | 7 | 8 | 9 | 10 | 10 | 13 | 13 | 14 | 13 | 13 | 13 | 13 | 11 | 13 | 13 | 13 | 11 | 10 | 10 | 10 | 9 | 9 |
| Wind Dir | NNW | NNW | NNW | NNW | NNW | NW | NW | WNW | WNW | WNW | WNW | WNW | WNW | NW | NW | NW | NNW | NNW | N | N | N | N | N | NNE |
| Gust | 18 | 20 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 20 | 20 | 18 | |||||||||||
| Sky Cover (%) | 8 | 11 | 17 | 29 | 27 | 21 | 18 | 15 | 19 | 23 | 9 | 5 | 6 | 4 | 3 | 3 | 5 | 18 | 18 | 29 | 38 | 28 | 33 | 16 |
| Precipitation Potential (%) | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 76 | 78 | 81 | 79 | 75 | 72 | 68 | 63 | 61 | 61 | 58 | 54 | 52 | 52 | 52 | 52 | 57 | 64 | 74 | 81 | 84 | 81 | 83 | 82 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/16 | |||||||||||||||||||||||
| Hour (PDT) | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 |
| Temperature (°F) | 49 | 49 | 49 | 48 | 51 | 54 | 58 | 63 | 65 | 67 | 70 | 72 | 73 | 73 | 74 | 72 | 70 | 68 | 65 | 63 | 60 | 59 | 57 | 56 |
| Dewpoint (°F) | 44 | 42 | 43 | 41 | 41 | 42 | 43 | 46 | 45 | 46 | 48 | 48 | 49 | 48 | 48 | 48 | 49 | 49 | 47 | 47 | 45 | 44 | 42 | 41 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 9 | 8 | 8 | 8 | 8 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 9 |
| Wind Dir | NNE | N | NNE | N | NNE | NE | NE | NE | NE | NE | NE | NE | NE | NE | NNE | NNE | NNE | N | N | N | E | E | E | E |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 11 | 8 | 10 | 10 | 10 | 3 | 3 | 3 | 5 | 5 | 5 | 11 | 11 | 11 | 8 | 8 | 8 | 15 | 15 | 15 | 10 | 10 | 10 | 5 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 82 | 78 | 80 | 76 | 69 | 64 | 57 | 53 | 49 | 47 | 45 | 43 | 42 | 41 | 40 | 43 | 47 | 50 | 53 | 55 | 58 | 58 | 57 | 57 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
