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| Point Forecast: 3 Miles S Mount St Helens WA 46.14N 122.2W (Elev. 2956 ft) |
Last Update: 7:03 am PST Dec 6, 2021 |
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| Date | 12/06 | 12/07 | ||||||||||||||||||||||
| Hour (PST) | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 |
| Temperature (°F) | 33 | 32 | 33 | 33 | 34 | 34 | 35 | 34 | 34 | 35 | 35 | 36 | 36 | 36 | 37 | 37 | 37 | 38 | 38 | 38 | 39 | 39 | 39 | 39 |
| Dewpoint (°F) | 30 | 30 | 32 | 31 | 34 | 34 | 35 | 34 | 34 | 35 | 35 | 34 | 34 | 34 | 35 | 35 | 35 | 36 | 36 | 36 | 37 | 37 | 38 | 38 |
| Wind Chill (°F) | 28 | 26 | 28 | 27 | 27 | 27 | 28 | 27 | 28 | 28 | 29 | 31 | 31 | 31 | 32 | 32 | 32 | 33 | 33 | 32 | 33 | 33 | 32 | 32 |
| Surface Wind (mph) | 6 | 6 | 6 | 7 | 8 | 8 | 9 | 8 | 7 | 8 | 7 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 8 | 9 | 9 | 10 | 10 |
| Wind Dir | WNW | WNW | WNW | NW | WNW | WNW | WNW | WNW | W | W | W | W | WNW | W | W | WNW | W | W | WNW | W | W | W | W | W |
| Gust | 18 | 18 | ||||||||||||||||||||||
| Sky Cover (%) | 99 | 99 | 99 | 100 | 100 | 100 | 100 | 100 | 100 | 94 | 94 | 94 | 93 | 93 | 93 | 91 | 91 | 91 | 93 | 93 | 93 | 92 | 92 | 92 |
| Precipitation Potential (%) | 98 | 98 | 98 | 100 | 100 | 100 | 100 | 100 | 100 | 77 | 77 | 77 | 77 | 77 | 77 | 40 | 40 | 40 | 40 | 40 | 40 | 41 | 41 | 41 |
| Relative Humidity (%) | 90 | 92 | 95 | 94 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 92 | 93 | 93 | 93 | 93 | 93 | 93 | 94 | 94 | 94 | 94 | 95 | 95 |
| Rain | Ocnl | -- | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Snow | -- | Ocnl | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Freezing Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Sleet | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 12/08 | |||||||||||||||||||||||
| Hour (PST) | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 |
| Temperature (°F) | 38 | 39 | 39 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 39 | 37 | 36 | 36 | 37 |
| Dewpoint (°F) | 37 | 38 | 38 | 39 | 40 | 40 | 40 | 40 | 40 | 40 | 39 | 39 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 37 | 36 | 36 | 36 |
| Wind Chill (°F) | 32 | 32 | 32 | 34 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 32 | 30 | 28 | 28 | 28 | 29 |
| Surface Wind (mph) | 9 | 11 | 10 | 9 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 11 | 16 | 16 | 16 | 11 | 11 | 11 |
| Wind Dir | W | WNW | WNW | WNW | W | W | W | W | W | W | W | W | W | W | W | WSW | WSW | WSW | W | W | W | WSW | WSW | WSW |
| Gust | 21 | 18 | 21 | 21 | 21 | 18 | 18 | 18 | 18 | 18 | 23 | 23 | 23 | 23 | 23 | 23 | 29 | 29 | 29 | 22 | 22 | 22 | ||
| Sky Cover (%) | 99 | 99 | 99 | 92 | 92 | 92 | 100 | 100 | 100 | 91 | 91 | 91 | 91 | 91 | 91 | 91 | 91 | 91 | 88 | 88 | 88 | 100 | 100 | 100 |
| Precipitation Potential (%) | 41 | 41 | 41 | 40 | 40 | 40 | 40 | 40 | 40 | 63 | 63 | 63 | 63 | 63 | 63 | 81 | 81 | 81 | 81 | 81 | 81 | 99 | 99 | 99 |
| Relative Humidity (%) | 95 | 96 | 96 | 97 | 100 | 100 | 100 | 100 | 100 | 100 | 98 | 96 | 94 | 94 | 94 | 94 | 94 | 94 | 94 | 96 | 98 | 100 | 98 | 96 |
| Rain | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Snow | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | Ocnl | Ocnl | Ocnl |
| Freezing Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Sleet | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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