| Point Forecast: 17 Miles ENE Mount St Helens WA 46.27N 121.86W (Elev. 4833 ft) |
Last Update: 9:20 am PDT Jul 15, 2025 |
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| Date | 07/15 | 07/16 | ||||||||||||||||||||||
| Hour (PDT) | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 |
| Temperature (°F) | 58 | 63 | 65 | 67 | 70 | 71 | 72 | 73 | 72 | 71 | 70 | 66 | 63 | 60 | 59 | 57 | 57 | 55 | 55 | 54 | 53 | 54 | 56 | 59 |
| Dewpoint (°F) | 42 | 45 | 44 | 45 | 46 | 45 | 44 | 44 | 44 | 43 | 44 | 43 | 43 | 41 | 40 | 39 | 39 | 38 | 38 | 37 | 36 | 37 | 37 | 38 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 8 | 8 | 9 | 10 | 10 | 10 | 10 | 9 | 7 | 6 |
| Wind Dir | ENE | ENE | ENE | ENE | ENE | NE | ENE | NE | NE | ENE | NE | NE | NE | NE | ENE | ENE | ENE | E | E | E | ESE | SE | ESE | E |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 1 | 1 | 3 | 3 | 3 | 2 | 3 | 2 | 2 | 3 | 6 | 7 | 5 | 6 | 5 | 4 | 5 | 3 | 3 | 2 | 3 | 9 | 5 | 2 |
| 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 (%) | 56 | 51 | 46 | 45 | 43 | 39 | 37 | 36 | 36 | 36 | 39 | 43 | 48 | 50 | 49 | 50 | 51 | 53 | 53 | 53 | 53 | 52 | 48 | 46 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/17 | |||||||||||||||||||||||
| Hour (PDT) | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 |
| Temperature (°F) | 64 | 67 | 69 | 71 | 72 | 74 | 74 | 74 | 74 | 72 | 69 | 67 | 64 | 62 | 59 | 57 | 56 | 54 | 53 | 53 | 52 | 54 | 55 | 57 |
| Dewpoint (°F) | 40 | 40 | 40 | 41 | 41 | 42 | 43 | 43 | 44 | 45 | 45 | 46 | 46 | 46 | 45 | 44 | 44 | 43 | 42 | 42 | 41 | 42 | 42 | 42 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 5 | 3 | 3 | 3 | 3 | 5 | 5 | 5 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 3 | 3 | 3 | 3 | 3 | 3 | 5 |
| Wind Dir | ESE | SSE | S | S | S | SW | SW | SW | WNW | WNW | WNW | WNW | WNW | WNW | WNW | WNW | WNW | WNW | WNW | WNW | W | W | W | W |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 2 | 3 | 4 | 4 | 4 | 3 | 3 | 3 | 7 | 7 | 7 | 8 | 8 | 8 | 10 | 10 | 10 | 5 | 5 | 5 | 5 | 5 | 5 | 4 |
| 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 (%) | 41 | 37 | 35 | 34 | 33 | 32 | 33 | 33 | 34 | 38 | 42 | 46 | 51 | 55 | 60 | 62 | 65 | 67 | 67 | 67 | 67 | 64 | 61 | 58 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
