| Point Forecast: 8 Miles N Mount St Helens WA 46.29N 122.18W (Elev. 1418 m) |
Last Update: 9:41 pm PDT Jul 15, 2025 |
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| Date | 07/15 | 07/16 | ||||||||||||||||||||||
| Hour (PDT) | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| Temperature (°C) | 18 | 17 | 17 | 16 | 15 | 15 | 14 | 14 | 14 | 16 | 17 | 19 | 21 | 22 | 23 | 23 | 24 | 24 | 24 | 24 | 23 | 23 | 20 | 18 |
| Dewpoint (°C) | 8 | 7 | 6 | 6 | 4 | 4 | 3 | 3 | 2 | 3 | 3 | 3 | 4 | 5 | 6 | 7 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 |
| Heat Index (°C) | 24 | 24 | 24 | 24 | ||||||||||||||||||||
| Surface Wind (mph) | 8 | 9 | 10 | 10 | 11 | 11 | 11 | 11 | 10 | 10 | 8 | 6 | 5 | 3 | 5 | 6 | 6 | 7 | 8 | 9 | 9 | 9 | 8 | 8 |
| Wind Dir | ENE | E | E | E | E | E | E | E | E | E | ESE | ESE | SE | SSE | SW | WNW | WNW | WNW | WNW | NW | NW | NW | WNW | WNW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 6 | 4 | 4 | 6 | 4 | 4 | 4 | 10 | 12 | 9 | 4 | 2 | 2 | 3 | 2 | 5 | 4 | 13 | 18 | 8 | 11 | 12 | 19 | 34 |
| 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 (%) | 54 | 52 | 48 | 49 | 48 | 47 | 47 | 46 | 45 | 43 | 40 | 36 | 34 | 32 | 33 | 34 | 34 | 37 | 38 | 38 | 39 | 42 | 51 | 57 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/17 | |||||||||||||||||||||||
| Hour (PDT) | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| Temperature (°C) | 17 | 16 | 15 | 14 | 13 | 13 | 12 | 12 | 13 | 13 | 14 | 16 | 17 | 19 | 19 | 21 | 21 | 21 | 22 | 22 | 21 | 20 | 19 | 18 |
| Dewpoint (°C) | 9 | 8 | 8 | 6 | 6 | 5 | 4 | 3 | 4 | 4 | 4 | 5 | 5 | 6 | 6 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 |
| Heat Index (°C) | ||||||||||||||||||||||||
| Surface Wind (mph) | 8 | 6 | 6 | 6 | 5 | 5 | 5 | 3 | 3 | 3 | 5 | 5 | 5 | 7 | 7 | 7 | 9 | 9 | 9 | 10 | 10 | 10 | 8 | 8 |
| Wind Dir | WNW | WNW | WNW | WNW | WNW | WNW | WNW | W | W | W | W | W | W | W | W | W | W | W | W | WNW | WNW | WNW | WNW | WNW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 21 | 7 | 7 | 7 | 3 | 3 | 3 | 6 | 6 | 6 | 7 | 7 | 7 | 4 | 4 | 4 | 7 | 7 | 7 | 6 | 6 | 6 | 10 | 10 |
| 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 (%) | 60 | 63 | 62 | 60 | 59 | 58 | 57 | 56 | 54 | 53 | 51 | 48 | 45 | 42 | 42 | 43 | 43 | 43 | 44 | 44 | 47 | 51 | 54 | 58 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
