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| Point Forecast: 2 Miles WSW Mount St Helens WA 46.18N 122.21W (Elev. 5938 ft) |
Last Update: 8:40 pm PDT Apr 19, 2024 |
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| Date | 04/19 | 04/20 | ||||||||||||||||||||||
| 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) | 37 | 34 | 33 | 32 | 32 | 32 | 32 | 31 | 31 | 31 | 31 | 32 | 33 | 35 | 38 | 39 | 40 | 41 | 41 | 39 | 37 | 32 | 31 | 31 |
| Dewpoint (°F) | 19 | 14 | 12 | 12 | 11 | 11 | 11 | 11 | 10 | 11 | 11 | 10 | 12 | 13 | 16 | 18 | 21 | 23 | 24 | 27 | 27 | 27 | 29 | 29 |
| Wind Chill (°F) | 27 | 23 | 21 | 20 | 21 | 22 | 23 | 21 | 21 | 21 | 21 | 22 | 22 | 25 | 29 | 29 | 31 | 32 | 31 | 29 | 27 | 20 | 19 | 19 |
| Surface Wind (mph) | 18 | 18 | 20 | 18 | 17 | 15 | 13 | 13 | 13 | 13 | 14 | 14 | 16 | 17 | 17 | 20 | 20 | 20 | 22 | 20 | 20 | 20 | 20 | 20 |
| Wind Dir | ESE | ESE | ESE | ESE | ESE | ESE | ESE | ESE | ESE | ESE | ESE | ESE | ESE | SE | SE | SE | SSE | S | S | SSW | SW | SW | SW | SW |
| Gust | 31 | 30 | 31 | 31 | 30 | 25 | 20 | 20 | 18 | 20 | 21 | 21 | 26 | 30 | 30 | 31 | 31 | 32 | 34 | 32 | 32 | 31 | 31 | 31 |
| Sky Cover (%) | 3 | 11 | 8 | 6 | 13 | 15 | 18 | 14 | 22 | 19 | 28 | 30 | 23 | 13 | 20 | 25 | 30 | 38 | 54 | 73 | 79 | 100 | 100 | 100 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 | 2 | 4 | 5 | 10 | 18 | 31 | 45 | 57 | 94 | 94 | 94 |
| Relative Humidity (%) | 47 | 43 | 42 | 43 | 42 | 41 | 41 | 42 | 41 | 42 | 42 | 40 | 42 | 39 | 40 | 42 | 47 | 48 | 51 | 61 | 68 | 82 | 94 | 91 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | Chc | Lkly | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Snow | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | Chc | Chc | Lkly | Ocnl | Ocnl | Ocnl |
| Freezing Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Sleet | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 04/21 | |||||||||||||||||||||||
| 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) | 29 | 28 | 28 | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 28 | 29 | 30 | 30 | 31 | 31 | 31 | 30 |
| Dewpoint (°F) | 26 | 25 | 24 | 23 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 21 | 21 | 22 | 22 | 23 | 25 | 26 | 26 | 25 | 25 | 24 | 23 |
| Wind Chill (°F) | 18 | 16 | 16 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 17 | 17 | 18 | 17 | 19 | 20 | 21 | 21 | 22 | 22 | 21 | 21 |
| Surface Wind (mph) | 15 | 15 | 15 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 11 |
| Wind Dir | WSW | WSW | WSW | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | WNW | WNW | WNW |
| Gust | 25 | 25 | 25 | 28 | 28 | 28 | 25 | 25 | 25 | 25 | 25 | 25 | ||||||||||||
| Sky Cover (%) | 100 | 100 | 100 | 78 | 78 | 78 | 79 | 79 | 79 | 97 | 97 | 97 | 97 | 97 | 97 | 78 | 78 | 78 | 78 | 78 | 78 | 55 | 55 | 55 |
| Precipitation Potential (%) | 94 | 94 | 94 | 58 | 58 | 58 | 58 | 58 | 58 | 77 | 77 | 77 | 77 | 77 | 77 | 58 | 58 | 58 | 58 | 58 | 58 | 11 | 11 | 11 |
| Relative Humidity (%) | 90 | 87 | 86 | 85 | 84 | 84 | 84 | 84 | 85 | 85 | 84 | 83 | 82 | 81 | 81 | 81 | 82 | 84 | 84 | 82 | 79 | 77 | 76 | 75 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Snow | Ocnl | Ocnl | Ocnl | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | -- | -- | -- |
| Freezing Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Sleet | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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