| Point Forecast: Mount St Helens WA 46.2N 122.18W (Elev. 1828 m) |
Last Update: 2:41 pm PDT Jun 22, 2024 |
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| Date | 06/22 | 06/23 | ||||||||||||||||||||||
| Hour (PDT) | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 |
| Temperature (°C) | 14 | 14 | 15 | 14 | 13 | 12 | 11 | 9 | 9 | 7 | 7 | 7 | 6 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 |
| Dewpoint (°C) | 2 | 3 | 3 | 3 | 6 | 8 | 8 | 6 | 6 | 6 | 4 | 4 | 4 | 2 | 0 | -2 | -3 | -3 | -2 | -2 | -7 | -7 | -5 | -6 |
| Heat Index (°C) | ||||||||||||||||||||||||
| Surface Wind (mph) | 9 | 13 | 14 | 14 | 14 | 15 | 15 | 16 | 17 | 18 | 18 | 18 | 17 | 17 | 17 | 16 | 16 | 15 | 15 | 14 | 13 | 13 | 13 | 13 |
| Wind Dir | SSW | W | W | W | W | W | W | WSW | SW | WSW | SW | SW | WSW | WSW | WSW | WSW | WSW | WSW | SW | WSW | WSW | WSW | W | WSW |
| Gust | 29 | 31 | 31 | 32 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 30 | 30 | 29 | 30 | |||||||||
| Sky Cover (%) | 14 | 17 | 17 | 12 | 13 | 14 | 27 | 36 | 39 | 47 | 53 | 56 | 64 | 57 | 51 | 40 | 39 | 34 | 36 | 36 | 35 | 34 | 32 | 30 |
| Precipitation Potential (%) | 2 | 3 | 3 | 2 | 2 | 2 | 3 | 7 | 14 | 23 | 23 | 24 | 22 | 18 | 16 | 11 | 11 | 11 | 12 | 13 | 12 | 11 | 9 | 7 |
| Relative Humidity (%) | 44 | 45 | 46 | 47 | 59 | 73 | 79 | 79 | 80 | 88 | 83 | 87 | 87 | 83 | 76 | 68 | 65 | 64 | 66 | 68 | 47 | 47 | 52 | 49 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 06/24 | |||||||||||||||||||||||
| Hour (PDT) | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 |
| Temperature (°C) | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 2 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Dewpoint (°C) | -3 | -3 | -1 | 1 | 1 | 1 | -1 | -2 | -3 | -2 | -3 | -3 | -3 | -4 | -5 | -6 | -5 | -4 | -4 | -4 | -5 | -6 | -4 | -2 |
| Heat Index (°C) | ||||||||||||||||||||||||
| Surface Wind (mph) | 14 | 15 | 16 | 15 | 14 | 10 | 13 | 11 | 11 | 11 | 10 | 10 | 9 | 9 | 9 | 9 | 8 | 7 | 7 | 5 | 3 | 6 | 3 | 5 |
| Wind Dir | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | WNW | WNW | WNW | W | WSW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 34 | 43 | 49 | 50 | 50 | 50 | 61 | 61 | 61 | 43 | 43 | 43 | 35 | 35 | 35 | 25 | 25 | 25 | 28 | 28 | 28 | 14 | 14 | 14 |
| Precipitation Potential (%) | 5 | 6 | 11 | 6 | 6 | 6 | 6 | 6 | 6 | 2 | 2 | 2 | 2 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 62 | 62 | 73 | 81 | 79 | 78 | 77 | 72 | 71 | 71 | 71 | 71 | 71 | 69 | 66 | 64 | 62 | 59 | 57 | 52 | 48 | 43 | 46 | 50 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
