| Point Forecast: 8 Miles N Mount St Helens WA 46.29N 122.18W (Elev. 4652 ft) |
Last Update: 3:25 am PDT Jul 15, 2025 |
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| Date | 07/15 | 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) | 52 | 52 | 51 | 51 | 55 | 58 | 61 | 66 | 68 | 70 | 71 | 73 | 73 | 73 | 74 | 73 | 72 | 70 | 65 | 64 | 62 | 61 | 60 | 59 |
| Dewpoint (°F) | 44 | 44 | 43 | 42 | 43 | 44 | 43 | 45 | 45 | 46 | 47 | 47 | 47 | 48 | 48 | 48 | 49 | 49 | 48 | 48 | 44 | 42 | 41 | 39 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 8 | 8 | 8 | 7 | 6 | 6 | 5 | 3 | 3 | 5 | 5 | 6 | 6 | 7 | 8 | 7 | 7 | 7 | 7 | 8 | 8 | 9 | 10 | 11 |
| Wind Dir | NE | NE | ENE | ENE | E | E | E | E | E | E | E | ENE | NE | NE | NNE | NNE | NNE | NNE | NNE | NE | E | E | E | E |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 5 | 4 | 9 | 13 | 9 | 3 | 2 | 2 | 2 | 2 | 5 | 5 | 6 | 3 | 7 | 3 | 4 | 7 | 8 | 8 | 5 | 6 | 8 | 5 |
| 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 (%) | 74 | 74 | 74 | 71 | 65 | 60 | 52 | 46 | 43 | 43 | 42 | 40 | 40 | 41 | 39 | 41 | 44 | 48 | 54 | 55 | 52 | 49 | 49 | 48 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/17 | |||||||||||||||||||||||
| 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) | 59 | 59 | 58 | 57 | 61 | 63 | 66 | 70 | 72 | 73 | 75 | 76 | 76 | 75 | 75 | 73 | 71 | 69 | 66 | 64 | 61 | 59 | 58 | 56 |
| Dewpoint (°F) | 39 | 38 | 38 | 36 | 38 | 38 | 38 | 40 | 41 | 41 | 44 | 45 | 46 | 46 | 48 | 49 | 49 | 49 | 48 | 48 | 47 | 45 | 45 | 43 |
| Heat Index (°F) | 75 | 76 | 76 | 75 | 75 | |||||||||||||||||||
| Surface Wind (mph) | 11 | 11 | 11 | 10 | 9 | 8 | 6 | 5 | 3 | 3 | 3 | 6 | 6 | 6 | 9 | 9 | 9 | 8 | 8 | 8 | 6 | 6 | 6 | 3 |
| Wind Dir | E | E | E | E | E | E | ESE | S | SSW | SSW | SSW | W | W | W | WNW | WNW | WNW | WNW | WNW | WNW | WNW | WNW | WNW | W |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 5 | 5 | 8 | 14 | 10 | 4 | 5 | 5 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 5 | 5 | 11 | 11 | 11 | 10 | 10 | 10 | 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 (%) | 47 | 46 | 47 | 45 | 42 | 40 | 36 | 33 | 32 | 32 | 33 | 33 | 35 | 36 | 38 | 42 | 45 | 49 | 52 | 56 | 59 | 60 | 61 | 62 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
