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| Point Forecast: 12 Miles ESE Mount St Helens WA 46.1N 122W (Elev. 1411 ft) |
Last Update: 12:02 pm PST Feb 22, 2020 |
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| Date | 02/22 | 02/23 | ||||||||||||||||||||||
| Hour (PST) | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 |
| Temperature (°F) | 45 | 46 | 47 | 47 | 47 | 46 | 42 | 40 | 39 | 39 | 38 | 38 | 36 | 35 | 37 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 42 |
| Dewpoint (°F) | 38 | 39 | 41 | 40 | 38 | 38 | 37 | 37 | 37 | 36 | 36 | 36 | 36 | 35 | 35 | 35 | 34 | 34 | 34 | 34 | 35 | 35 | 36 | 36 |
| Wind Chill (°F) | 45 | 46 | 47 | 47 | 46 | 44 | 40 | 40 | 39 | 39 | 38 | 38 | 36 | 35 | 37 | 40 | 40 | 40 | 40 | 36 | 36 | 36 | 32 | 35 |
| Surface Wind (mph) | 0 | 0 | 0 | 0 | 3 | 3 | 3 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 5 | 5 | 5 | 13 | 13 |
| Wind Dir | S | W | W | W | NNW | NNW | NNW | NNE | NNE | NNE | NE | NE | NE | SSE | SSE | SSE | ESE | ESE | ESE | SSW | SSW | SSW | WSW | WSW |
| Gust | 20 | 20 | ||||||||||||||||||||||
| Sky Cover (%) | 70 | 84 | 78 | 77 | 58 | 58 | 58 | 58 | 58 | 58 | 97 | 97 | 97 | 97 | 97 | 97 | 96 | 96 | 96 | 96 | 96 | 96 | 95 | 95 |
| Precipitation Potential (%) | 14 | 14 | 14 | 14 | 4 | 4 | 4 | 4 | 4 | 4 | 51 | 51 | 51 | 51 | 51 | 51 | 97 | 97 | 97 | 97 | 97 | 97 | 100 | 100 |
| Relative Humidity (%) | 77 | 77 | 78 | 76 | 71 | 73 | 85 | 88 | 92 | 90 | 94 | 93 | 97 | 100 | 91 | 82 | 81 | 80 | 80 | 81 | 83 | 84 | 86 | 80 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | Chc | Chc | Chc | Chc | Chc | Chc | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Snow | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Freezing Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Sleet | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 02/24 | |||||||||||||||||||||||
| Hour (PST) | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 |
| Temperature (°F) | 42 | 42 | 42 | 41 | 41 | 41 | 40 | 39 | 39 | 38 | 38 | 37 | 36 | 35 | 35 | 34 | 33 | 32 | 32 | 32 | 33 | 35 | 37 | 38 |
| Dewpoint (°F) | 37 | 37 | 38 | 38 | 38 | 37 | 37 | 36 | 36 | 35 | 35 | 34 | 34 | 33 | 33 | 32 | 32 | 31 | 31 | 31 | 31 | 32 | 32 | 32 |
| Wind Chill (°F) | 35 | 35 | 35 | 34 | 35 | 35 | 33 | 34 | 34 | 33 | 32 | 31 | 30 | 28 | 28 | 27 | 33 | 32 | 32 | 32 | 33 | 35 | 34 | 35 |
| Surface Wind (mph) | 13 | 13 | 13 | 13 | 10 | 10 | 10 | 7 | 7 | 7 | 8 | 8 | 8 | 9 | 9 | 9 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 3 |
| Wind Dir | WSW | WSW | WSW | WSW | WSW | WSW | WSW | W | W | W | WSW | WSW | WSW | WSW | WSW | WSW | S | S | S | SSW | SSW | SSW | SW | SW |
| Gust | 20 | 20 | 20 | 20 | ||||||||||||||||||||
| Sky Cover (%) | 95 | 70 | 70 | 70 | 84 | 84 | 84 | 84 | 84 | 84 | 84 | 84 | 84 | 79 | 79 | 79 | 82 | 82 | 82 | 76 | 76 | 76 | 73 | 73 |
| Precipitation Potential (%) | 100 | 100 | 100 | 100 | 91 | 91 | 91 | 91 | 91 | 91 | 74 | 74 | 74 | 74 | 74 | 74 | 40 | 40 | 40 | 40 | 40 | 40 | 22 | 22 |
| Relative Humidity (%) | 81 | 83 | 84 | 89 | 89 | 87 | 89 | 91 | 89 | 89 | 89 | 90 | 91 | 91 | 92 | 92 | 93 | 94 | 96 | 96 | 93 | 88 | 83 | 79 |
| Rain | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Snow | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Chc | Chc | Chc | Chc | Chc | Chc | -- | -- |
| Freezing Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Sleet | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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