| Point Forecast: Mount St Helens WA 46.2N 122.18W (Elev. 5997 ft) |
Last Update: 10:41 pm PDT May 5, 2024 |
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| Date | 05/05 | 05/06 | ||||||||||||||||||||||
| Hour (PDT) | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| Temperature (°F) | 27 | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 25 | 25 |
| Dewpoint (°F) | 26 | 25 | 25 | 26 | 26 | 25 | 25 | 25 | 23 | 23 | 23 | 23 | 24 | 24 | 25 | 24 | 23 | 23 | 22 | 23 | 23 | 24 | 23 | 22 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 30 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 23 | 24 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 25 |
| Wind Dir | WSW | WSW | SW | SW | SW | SW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | W | W | W | W | W | W | W | W | W | W |
| Gust | 39 | 37 | 39 | 39 | 39 | 39 | 37 | 36 | 36 | 34 | 34 | 33 | 31 | 32 | 32 | 34 | 36 | 34 | 36 | 36 | 36 | 32 | 32 | 32 |
| Sky Cover (%) | 96 | 97 | 97 | 98 | 99 | 96 | 96 | 94 | 89 | 99 | 86 | 86 | 86 | 94 | 93 | 98 | 99 | 98 | 100 | 100 | 100 | 100 | 100 | 100 |
| Precipitation Potential (%) | 93 | 95 | 95 | 96 | 98 | 92 | 92 | 86 | 83 | 77 | 75 | 72 | 79 | 90 | 89 | 97 | 98 | 96 | 99 | 99 | 99 | 99 | 99 | 99 |
| Relative Humidity (%) | 94 | 93 | 93 | 94 | 95 | 97 | 97 | 95 | 93 | 91 | 92 | 93 | 94 | 93 | 91 | 88 | 86 | 85 | 85 | 87 | 89 | 91 | 91 | 90 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc |
| Date | 05/07 | |||||||||||||||||||||||
| Hour (PDT) | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| Temperature (°F) | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 26 | 26 | 27 | 28 | 28 | 28 | 27 | 27 | 27 | 26 | 26 | 26 |
| Dewpoint (°F) | 23 | 24 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 25 | 24 | 22 | 22 | 22 | 23 | 24 | 24 | 23 | 22 | 23 | 24 | 24 | 24 | 23 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 23 | 23 | 23 | 21 | 21 | 21 | 21 | 21 | 21 | 18 | 18 | 18 | 21 | 21 | 21 | 24 | 24 | 24 | 28 | 28 | 28 | 14 | 14 | 14 |
| Wind Dir | WNW | WNW | WNW | WNW | WNW | WNW | WNW | WNW | WNW | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W |
| Gust | 31 | 31 | 31 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 30 | 30 | 30 | 33 | 33 | 33 | 36 | 36 | 36 | 21 | 21 | 21 |
| Sky Cover (%) | 88 | 88 | 88 | 88 | 88 | 88 | 92 | 92 | 92 | 92 | 92 | 92 | 92 | 92 | 92 | 92 | 92 | 92 | 54 | 54 | 54 | 52 | 52 | 52 |
| Precipitation Potential (%) | 81 | 81 | 81 | 81 | 81 | 81 | 88 | 88 | 88 | 88 | 88 | 88 | 88 | 88 | 88 | 88 | 88 | 88 | 28 | 28 | 28 | 28 | 28 | 28 |
| Relative Humidity (%) | 91 | 94 | 98 | 100 | 99 | 98 | 98 | 98 | 99 | 99 | 95 | 90 | 86 | 85 | 84 | 84 | 83 | 82 | 82 | 86 | 89 | 92 | 92 | 90 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
