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| Point Forecast: Mount St Helens WA 46.18N 122.18W (Elev. 6204 ft) |
Last Update: 3:41 pm PST Nov 30, 2023 |
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| Date | 11/30 | 12/01 | ||||||||||||||||||||||
| Hour (PST) | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 |
| Temperature (°F) | 23 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 24 | 23 | 24 | 24 | 24 | 25 | 25 | 24 | 25 | 25 | 24 | 24 | 25 | 25 | 25 | 25 |
| Dewpoint (°F) | 18 | 19 | 18 | 19 | 18 | 17 | 18 | 17 | 17 | 17 | 17 | 17 | 17 | 19 | 19 | 18 | 18 | 19 | 21 | 23 | 24 | 24 | 24 | 23 |
| Wind Chill (°F) | 12 | 11 | 8 | 9 | 10 | 10 | 9 | 9 | 12 | 9 | 9 | 9 | 7 | 9 | 9 | 8 | 9 | 9 | 8 | 8 | 9 | 8 | 9 | 9 |
| Surface Wind (mph) | 11 | 11 | 17 | 18 | 14 | 14 | 15 | 16 | 13 | 17 | 21 | 24 | 28 | 28 | 28 | 26 | 26 | 28 | 26 | 26 | 26 | 28 | 28 | 28 |
| Wind Dir | SSW | SW | WSW | W | W | W | W | W | WSW | SW | SW | SW | SSW | SSW | SSW | SW | WSW | W | W | W | W | W | W | W |
| Gust | 30 | 31 | 21 | 21 | 25 | 28 | 20 | 30 | 33 | 39 | 41 | 41 | 41 | 40 | 40 | 41 | 40 | 40 | 40 | 41 | 41 | 41 | ||
| Sky Cover (%) | 100 | 95 | 93 | 94 | 92 | 89 | 90 | 93 | 93 | 93 | 95 | 96 | 95 | 99 | 100 | 94 | 93 | 88 | 87 | 89 | 89 | 93 | 91 | 90 |
| Precipitation Potential (%) | 100 | 92 | 83 | 71 | 59 | 45 | 38 | 43 | 50 | 67 | 82 | 92 | 91 | 98 | 100 | 91 | 89 | 82 | 79 | 74 | 72 | 71 | 74 | 74 |
| Relative Humidity (%) | 80 | 88 | 86 | 83 | 81 | 78 | 81 | 78 | 76 | 79 | 77 | 74 | 75 | 77 | 77 | 79 | 75 | 78 | 87 | 96 | 97 | 98 | 94 | 91 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Snow | Ocnl | Ocnl | Ocnl | Lkly | Lkly | Chc | Chc | Chc | Chc | Lkly | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Lkly | Lkly | Lkly | Lkly | Lkly |
| Freezing Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Sleet | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 12/02 | |||||||||||||||||||||||
| Hour (PST) | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 |
| Temperature (°F) | 26 | 26 | 26 | 27 | 26 | 27 | 27 | 27 | 27 | 26 | 27 | 28 | 28 | 29 | 29 | 30 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 28 |
| Dewpoint (°F) | 22 | 24 | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 21 | 22 | 22 | 22 | 22 | 23 | 24 | 24 | 24 | 24 | 26 | 27 | 28 | 27 | 26 |
| Wind Chill (°F) | 12 | 11 | 11 | 12 | 12 | 13 | 13 | 12 | 12 | 10 | 11 | 12 | 13 | 13 | 14 | 14 | 13 | 12 | 12 | 12 | 12 | 14 | 14 | 14 |
| Surface Wind (mph) | 23 | 23 | 23 | 22 | 22 | 22 | 24 | 24 | 24 | 30 | 30 | 30 | 31 | 31 | 31 | 36 | 36 | 36 | 31 | 31 | 31 | 21 | 21 | 21 |
| Wind Dir | W | W | W | WSW | WSW | WSW | WSW | WSW | WSW | SW | SW | SW | SW | SW | SW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW |
| Gust | 37 | 37 | 37 | 34 | 34 | 34 | 39 | 39 | 39 | 45 | 45 | 45 | 47 | 47 | 47 | 49 | 49 | 49 | 47 | 47 | 47 | 33 | 33 | 33 |
| Sky Cover (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Precipitation Potential (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Relative Humidity (%) | 85 | 93 | 88 | 85 | 85 | 82 | 81 | 81 | 81 | 81 | 79 | 78 | 76 | 76 | 76 | 77 | 79 | 81 | 85 | 91 | 97 | 100 | 97 | 92 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Snow | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl |
| Freezing Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Sleet | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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