| Point Forecast: 8 Miles N Mount St Helens WA 46.29N 122.18W (Elev. 4652 ft) |
Last Update: 9:40 am PDT Jun 12, 2026 |
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| Date | 06/12 | 06/13 | ||||||||||||||||||||||
| Hour (PDT) | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 |
| Temperature (°F) | 53 | 54 | 56 | 57 | 58 | 58 | 59 | 59 | 59 | 57 | 56 | 52 | 50 | 49 | 48 | 46 | 46 | 46 | 45 | 46 | 48 | 52 | 58 | 61 |
| Dewpoint (°F) | 38 | 39 | 41 | 41 | 41 | 40 | 40 | 41 | 40 | 40 | 42 | 39 | 38 | 37 | 37 | 36 | 36 | 35 | 33 | 33 | 33 | 35 | 37 | 37 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 10 | 13 | 13 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 13 | 10 | 10 | 9 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 |
| Wind Dir | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | N | N | NNE | NE | NE | ENE | ENE | ENE | ENE | ENE | ENE | ENE | ENE |
| Gust | 18 | 20 | 20 | 21 | 21 | 21 | 21 | 22 | 21 | 18 | ||||||||||||||
| Sky Cover (%) | 4 | 6 | 3 | 2 | 4 | 7 | 2 | 2 | 3 | 2 | 4 | 3 | 3 | 2 | 3 | 3 | 4 | 4 | 4 | 6 | 6 | 6 | 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 (%) | 56 | 56 | 56 | 54 | 53 | 52 | 50 | 51 | 49 | 53 | 59 | 62 | 64 | 64 | 66 | 67 | 67 | 66 | 63 | 61 | 57 | 52 | 46 | 40 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 06/14 | |||||||||||||||||||||||
| Hour (PDT) | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 |
| Temperature (°F) | 63 | 64 | 66 | 67 | 68 | 69 | 70 | 70 | 69 | 67 | 65 | 62 | 60 | 57 | 56 | 56 | 55 | 55 | 54 | 54 | 57 | 59 | 62 | 64 |
| Dewpoint (°F) | 37 | 38 | 39 | 39 | 39 | 40 | 42 | 44 | 44 | 47 | 50 | 49 | 47 | 43 | 41 | 39 | 36 | 34 | 32 | 31 | 34 | 35 | 37 | 37 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 8 | 6 | 6 | 6 | 6 | 6 | 6 | 8 | 8 | 8 | 6 | 6 | 6 | 9 | 9 | 9 | 11 | 11 | 11 | 13 | 13 | 13 | 10 | 10 |
| Wind Dir | ENE | ENE | ENE | ENE | NNE | NNE | NNE | N | N | N | WNW | WNW | WNW | S | S | S | SE | SE | SE | E | E | E | ENE | ENE |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 3 | 4 | 4 | 4 | 7 | 7 | 7 | 7 | 7 | 7 | 5 | 5 | 5 | 13 | 13 | 13 | 5 | 5 | 5 | 10 | 10 | 10 | 5 | 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 (%) | 38 | 38 | 37 | 36 | 35 | 35 | 36 | 39 | 41 | 49 | 59 | 62 | 62 | 59 | 56 | 52 | 48 | 45 | 43 | 42 | 41 | 40 | 39 | 37 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
