| Point Forecast: 3 Miles S Mount St Helens WA 46.14N 122.2W (Elev. 2956 ft) |
Last Update: 12:45 pm PDT Jul 13, 2025 |
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| Date | 07/13 | 07/14 | ||||||||||||||||||||||
| Hour (PDT) | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 |
| Temperature (°F) | 79 | 81 | 81 | 82 | 80 | 79 | 77 | 75 | 72 | 70 | 68 | 67 | 66 | 64 | 63 | 61 | 61 | 60 | 58 | 58 | 58 | 60 | 61 | 64 |
| Dewpoint (°F) | 58 | 58 | 58 | 59 | 57 | 56 | 57 | 56 | 54 | 53 | 53 | 54 | 53 | 53 | 53 | 52 | 52 | 52 | 49 | 52 | 53 | 54 | 55 | 56 |
| Heat Index (°F) | 79 | 81 | 81 | 82 | 80 | 79 | 77 | 75 | ||||||||||||||||
| Surface Wind (mph) | 7 | 8 | 9 | 10 | 10 | 10 | 10 | 10 | 9 | 8 | 7 | 6 | 6 | 5 | 5 | 5 | 3 | 5 | 5 | 5 | 6 | 6 | 6 | 7 |
| Wind Dir | WSW | NW | NNW | NNW | NNW | NNW | NNW | NNW | N | N | N | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | W | W | W | W |
| Gust | 18 | 18 | 18 | 18 | ||||||||||||||||||||
| Sky Cover (%) | 5 | 4 | 3 | 3 | 2 | 2 | 1 | 2 | 5 | 10 | 16 | 13 | 12 | 11 | 11 | 14 | 23 | 26 | 26 | 26 | 31 | 31 | 31 | 27 |
| Precipitation Potential (%) | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 48 | 45 | 45 | 45 | 45 | 46 | 50 | 52 | 54 | 55 | 58 | 63 | 64 | 68 | 69 | 71 | 71 | 75 | 73 | 80 | 82 | 82 | 80 | 75 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/15 | |||||||||||||||||||||||
| Hour (PDT) | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 |
| Temperature (°F) | 66 | 68 | 70 | 70 | 69 | 69 | 67 | 65 | 63 | 62 | 61 | 60 | 60 | 59 | 59 | 58 | 58 | 57 | 58 | 59 | 60 | 64 | 68 | 72 |
| Dewpoint (°F) | 56 | 56 | 56 | 56 | 55 | 55 | 54 | 53 | 51 | 51 | 50 | 49 | 48 | 47 | 46 | 45 | 45 | 44 | 45 | 46 | 48 | 49 | 51 | 52 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 7 | 7 | 9 | 9 | 9 | 9 | 9 | 9 | 7 | 7 | 7 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| Wind Dir | W | W | W | W | W | WNW | WNW | WNW | NW | NW | NW | N | N | N | NNE | NNE | NNE | NE | NE | NE | ENE | ENE | ENE | E |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 27 | 27 | 16 | 16 | 16 | 6 | 6 | 6 | 12 | 12 | 12 | 11 | 11 | 11 | 8 | 8 | 8 | 13 | 13 | 13 | 11 | 11 | 11 | 7 |
| 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 (%) | 70 | 66 | 61 | 61 | 61 | 61 | 63 | 64 | 66 | 66 | 66 | 66 | 65 | 64 | 63 | 63 | 62 | 62 | 63 | 63 | 64 | 59 | 55 | 50 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
