| Point Forecast: Mount St Helens WA 46.2N 122.18W (Elev. 5997 ft) |
Last Update: 7:40 pm PDT May 9, 2024 |
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| Date | 05/09 | 05/10 | ||||||||||||||||||||||
| Hour (PDT) | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 |
| Temperature (°F) | 51 | 50 | 48 | 47 | 46 | 46 | 46 | 45 | 43 | 43 | 44 | 46 | 48 | 50 | 52 | 53 | 54 | 56 | 57 | 57 | 57 | 57 | 56 | 55 |
| Dewpoint (°F) | 32 | 31 | 30 | 29 | 28 | 28 | 28 | 27 | 26 | 27 | 28 | 30 | 31 | 32 | 32 | 32 | 32 | 33 | 33 | 33 | 33 | 34 | 37 | 40 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 13 | 10 | 11 | 13 | 14 | 15 | 16 | 15 | 15 | 14 | 14 | 14 | 13 | 14 | 13 | 11 | 10 | 8 | 6 | 6 | 6 | 6 | 6 | 6 |
| Wind Dir | E | E | ESE | ESE | SE | SE | SE | SE | SE | SE | SE | SE | SE | SE | SE | SE | SE | SE | SE | SE | ESE | N | N | N |
| Gust | 22 | 23 | 23 | 22 | 18 | 18 | 18 | |||||||||||||||||
| Sky Cover (%) | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 13 | 12 | 12 | 12 |
| 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 (%) | 48 | 48 | 49 | 49 | 49 | 49 | 50 | 51 | 50 | 52 | 53 | 53 | 51 | 49 | 46 | 44 | 43 | 42 | 41 | 40 | 40 | 43 | 49 | 57 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 05/11 | |||||||||||||||||||||||
| Hour (PDT) | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 |
| Temperature (°F) | 53 | 52 | 51 | 50 | 50 | 51 | 50 | 49 | 47 | 47 | 48 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 56 | 56 | 55 | 54 | 53 | 53 |
| Dewpoint (°F) | 41 | 40 | 38 | 36 | 36 | 36 | 35 | 34 | 32 | 32 | 33 | 34 | 35 | 34 | 32 | 30 | 30 | 31 | 32 | 32 | 32 | 31 | 32 | 33 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 7 | 7 | 7 | 9 | 9 | 9 | 11 | 11 | 11 |
| Wind Dir | NNE | NNE | NNE | ENE | ENE | ENE | W | W | W | NNW | NNW | NNW | NE | NE | NE | W | W | W | WNW | WNW | WNW | WNW | WNW | WNW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 5 | 5 | 5 | 0 | 0 | 0 | 3 | 3 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 3 | 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 (%) | 62 | 63 | 61 | 59 | 58 | 57 | 57 | 56 | 55 | 55 | 55 | 55 | 54 | 49 | 44 | 40 | 39 | 39 | 40 | 40 | 41 | 42 | 45 | 48 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
