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| Point Forecast: 17 Miles ENE Mount St Helens WA 46.27N 121.86W (Elev. 4833 ft) |
Last Update: 4:02 pm PDT Aug 2, 2021 |
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| Date | 08/02 | 08/03 | ||||||||||||||||||||||
| Hour (PDT) | 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) | 77 | 76 | 75 | 73 | 71 | 68 | 67 | 66 | 66 | 65 | 65 | 63 | 62 | 61 | 63 | 66 | 70 | 73 | 76 | 78 | 80 | 81 | 82 | 82 |
| Dewpoint (°F) | 41 | 43 | 46 | 49 | 51 | 50 | 49 | 48 | 48 | 49 | 49 | 48 | 46 | 44 | 44 | 45 | 46 | 46 | 46 | 46 | 47 | 48 | 49 | 49 |
| Heat Index (°F) | 77 | 76 | 75 | 76 | 78 | 79 | 80 | 81 | 80 | |||||||||||||||
| Surface Wind (mph) | 7 | 7 | 7 | 7 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 2 | 2 | 2 | 6 | 6 | 6 | 7 | 7 |
| Wind Dir | NW | NW | NW | NW | NNW | NNW | NNW | E | E | E | E | E | E | E | E | E | ESE | ESE | ESE | W | W | W | WNW | WNW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 15 | 15 | 15 | 15 | 13 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 21 | 19 | 18 | 21 | 24 | 15 | 10 | 10 | 10 | 10 |
| Precipitation Potential (%) | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 0 | 0 |
| Relative Humidity (%) | 28 | 30 | 36 | 44 | 50 | 53 | 53 | 53 | 54 | 55 | 57 | 57 | 56 | 54 | 51 | 47 | 42 | 38 | 34 | 32 | 31 | 31 | 32 | 33 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 08/04 | |||||||||||||||||||||||
| Hour (PDT) | 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) | 80 | 78 | 76 | 73 | 70 | 68 | 65 | 64 | 63 | 63 | 63 | 62 | 60 | 60 | 61 | 63 | 66 | 70 | 74 | 78 | 80 | 81 | 82 | 83 |
| Dewpoint (°F) | 49 | 50 | 53 | 54 | 55 | 53 | 50 | 48 | 48 | 49 | 48 | 44 | 39 | 37 | 39 | 43 | 46 | 48 | 48 | 48 | 50 | 52 | 53 | 51 |
| Heat Index (°F) | 80 | 78 | 76 | 78 | 80 | 81 | 81 | 81 | ||||||||||||||||
| Surface Wind (mph) | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 3 | 3 | 3 | 6 | 6 | 6 | 8 | 8 |
| Wind Dir | WNW | WNW | WNW | WNW | NNW | NNW | NNW | N | N | N | N | N | N | N | N | N | NNE | NNE | NNE | NW | NW | NW | NW | NW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 14 | 10 | 10 | 10 | 10 | 13 | 14 | 15 | 15 | 15 | 33 | 33 | 33 | 36 | 36 | 36 | 27 | 27 | 27 | 32 | 32 | 32 | 32 | 32 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 3 | 3 | 3 | 3 | 3 | 7 | 7 | 7 | 7 | 7 | 7 | 12 | 12 | 12 | 12 | 12 |
| Relative Humidity (%) | 34 | 38 | 45 | 52 | 57 | 59 | 58 | 57 | 58 | 60 | 58 | 52 | 45 | 43 | 44 | 47 | 49 | 46 | 40 | 36 | 35 | 36 | 36 | 33 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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