| Point Forecast: Mount St Helens WA 46.18N 122.18W (Elev. 6204 ft) |
Last Update: 7:41 pm PDT Jul 26, 2024 |
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| Date | 07/26 | 07/27 | ||||||||||||||||||||||
| Hour (PDT) | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 |
| Temperature (°F) | 54 | 51 | 50 | 50 | 49 | 49 | 48 | 47 | 47 | 48 | 47 | 50 | 52 | 54 | 54 | 55 | 55 | 56 | 56 | 57 | 57 | 56 | 55 | 54 |
| Dewpoint (°F) | 35 | 29 | 28 | 25 | 24 | 23 | 23 | 23 | 21 | 24 | 25 | 27 | 30 | 32 | 33 | 37 | 41 | 43 | 42 | 44 | 45 | 44 | 45 | 43 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 11 | 10 | 9 | 9 | 8 | 8 | 8 | 8 | 7 | 7 | 6 | 6 | 6 | 7 | 9 | 10 | 10 | 11 | 13 | 13 | 14 | 14 | 14 | 14 |
| Wind Dir | WNW | NW | NW | WNW | NW | NW | NW | NNW | NNW | NNW | NNW | NNW | N | NNW | NNW | N | NNW | NW | NNW | NW | NW | WNW | WNW | WNW |
| Gust | 18 | 20 | 20 | 21 | 21 | 21 | ||||||||||||||||||
| Sky Cover (%) | 5 | 6 | 3 | 3 | 4 | 6 | 12 | 22 | 27 | 25 | 36 | 31 | 26 | 17 | 8 | 12 | 8 | 6 | 8 | 5 | 4 | 12 | 12 | 12 |
| Precipitation Potential (%) | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 49 | 43 | 42 | 38 | 37 | 36 | 37 | 38 | 36 | 39 | 41 | 40 | 43 | 43 | 45 | 51 | 60 | 61 | 60 | 61 | 63 | 64 | 70 | 67 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/28 | |||||||||||||||||||||||
| Hour (PDT) | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 |
| Temperature (°F) | 53 | 51 | 50 | 49 | 48 | 48 | 48 | 48 | 47 | 47 | 47 | 48 | 49 | 50 | 50 | 51 | 52 | 52 | 53 | 54 | 54 | 54 | 54 | 53 |
| Dewpoint (°F) | 40 | 35 | 33 | 33 | 32 | 31 | 31 | 31 | 30 | 30 | 29 | 30 | 31 | 34 | 35 | 38 | 40 | 41 | 43 | 44 | 44 | 44 | 44 | 42 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 14 | 14 | 14 | 8 | 8 | 8 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 8 | 8 | 8 | 9 | 9 | 9 |
| Wind Dir | WNW | WNW | WNW | WNW | WNW | WNW | W | W | W | W | W | W | WSW | WSW | WSW | W | W | W | W | W | W | WNW | WNW | WNW |
| Gust | 18 | 18 | 18 | |||||||||||||||||||||
| Sky Cover (%) | 25 | 25 | 25 | 10 | 10 | 10 | 28 | 28 | 28 | 40 | 40 | 40 | 42 | 42 | 42 | 27 | 27 | 27 | 42 | 42 | 42 | 22 | 22 | 22 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 3 | 3 | 3 |
| Relative Humidity (%) | 62 | 54 | 52 | 53 | 53 | 52 | 52 | 52 | 51 | 51 | 50 | 49 | 50 | 53 | 57 | 61 | 64 | 67 | 69 | 70 | 70 | 69 | 68 | 66 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
