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| Point Forecast: Mount St Helens WA 46.2N 122.18W (Elev. 5997 ft) |
Last Update: 11:41 am PDT Mar 29, 2023 |
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| Date | 03/29 | 03/30 | ||||||||||||||||||||||
| Hour (PDT) | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 |
| Temperature (°F) | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 28 | 27 | 27 | 26 | 27 | 27 | 26 | 25 | 25 | 25 | 24 | 24 | 24 | 25 | 25 |
| Dewpoint (°F) | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 25 | 25 | 25 | 24 | 24 | 24 | 25 | 25 | 23 | 22 | 22 | 21 | 20 | 20 | 20 | 21 | 21 |
| Wind Chill (°F) | 22 | 24 | 24 | 23 | 22 | 22 | 20 | 22 | 20 | 20 | 19 | 19 | 18 | 18 | 17 | 15 | 13 | 13 | 13 | 12 | 12 | 12 | 13 | 13 |
| Surface Wind (mph) | 5 | 3 | 3 | 5 | 6 | 6 | 8 | 7 | 9 | 8 | 8 | 8 | 8 | 9 | 11 | 13 | 14 | 15 | 14 | 14 | 14 | 13 | 13 | 13 |
| Wind Dir | ESE | E | ESE | E | N | WNW | W | W | W | W | W | W | W | W | W | WSW | WSW | SW | WSW | WSW | WSW | WSW | WSW | WSW |
| Gust | 18 | 21 | 18 | 18 | 18 | |||||||||||||||||||
| Sky Cover (%) | 46 | 44 | 48 | 43 | 46 | 56 | 59 | 74 | 70 | 67 | 62 | 61 | 72 | 72 | 72 | 75 | 75 | 75 | 73 | 73 | 73 | 75 | 75 | 75 |
| Precipitation Potential (%) | 15 | 23 | 23 | 24 | 21 | 24 | 36 | 36 | 36 | 36 | 36 | 36 | 18 | 18 | 18 | 18 | 18 | 18 | 50 | 50 | 50 | 50 | 50 | 50 |
| Relative Humidity (%) | 83 | 82 | 82 | 82 | 83 | 83 | 84 | 85 | 86 | 87 | 89 | 90 | 92 | 92 | 91 | 90 | 88 | 86 | 85 | 85 | 85 | 86 | 86 | 87 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Snow | SChc | SChc | SChc | SChc | SChc | SChc | Chc | Chc | Chc | Chc | Chc | Chc | SChc | SChc | SChc | SChc | SChc | SChc | Chc | Chc | Chc | Chc | Chc | Chc |
| Freezing Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Sleet | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 03/31 | |||||||||||||||||||||||
| Hour (PDT) | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 |
| Temperature (°F) | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 25 | 25 | 24 | 23 | 22 | 22 | 22 | 21 | 21 | 21 | 21 | 22 | 22 | 23 | 23 | 23 |
| Dewpoint (°F) | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 22 | 22 | 21 | 20 | 20 | 19 | 19 | 19 | 18 | 17 | 18 | 20 | 21 | 20 | 19 |
| Wind Chill (°F) | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 13 | 13 | 11 | 10 | 9 | 8 | 8 | 7 | 7 | 7 | 7 | 10 | 10 | 11 | 11 | 11 | 11 |
| Surface Wind (mph) | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 17 | 17 | 17 | 17 | 17 | 17 | 18 | 18 | 18 | 11 | 11 | 11 | 13 | 13 | 13 |
| Wind Dir | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW |
| Gust | 21 | 21 | 21 | 22 | 22 | 22 | 22 | 22 | 22 | 25 | 25 | 25 | 24 | 24 | 24 | 25 | 25 | 25 | 18 | 18 | 18 | 20 | 20 | 20 |
| Sky Cover (%) | 84 | 84 | 84 | 84 | 84 | 84 | 90 | 90 | 90 | 90 | 90 | 90 | 92 | 92 | 92 | 92 | 92 | 92 | 94 | 94 | 94 | 94 | 94 | 94 |
| Precipitation Potential (%) | 76 | 76 | 76 | 76 | 76 | 76 | 84 | 84 | 84 | 84 | 84 | 84 | 87 | 87 | 87 | 87 | 87 | 87 | 91 | 91 | 91 | 91 | 91 | 91 |
| Relative Humidity (%) | 87 | 88 | 89 | 90 | 90 | 89 | 89 | 90 | 91 | 91 | 91 | 90 | 90 | 91 | 91 | 92 | 91 | 86 | 85 | 86 | 90 | 92 | 91 | 87 |
| 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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