| Point Forecast: South Seattle WA 47.57N 122.31W (Elev. 200 ft) |
Last Update: 3:40 pm PDT May 19, 2025 |
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| Date | 05/19 | 05/20 | ||||||||||||||||||||||
| 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 | 53 | 52 | 51 | 50 | 49 | 49 | 49 | 49 | 48 | 47 | 49 | 49 | 51 | 53 | 54 | 56 | 57 | 58 | 58 | 59 | 60 | 59 | 58 |
| Dewpoint (°F) | 47 | 47 | 47 | 46 | 46 | 46 | 46 | 46 | 46 | 45 | 44 | 46 | 44 | 45 | 46 | 46 | 46 | 47 | 47 | 46 | 47 | 47 | 47 | 47 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 10 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 8 |
| Wind Dir | SSW | SSW | SSW | SSW | SSW | SSW | SSW | SSW | S | S | S | S | SSW | SSW | SSW | SSW | SSW | SSW | SSW | SSW | SW | SW | SSW | SW |
| Gust | 20 | 21 | ||||||||||||||||||||||
| Sky Cover (%) | 67 | 59 | 53 | 56 | 57 | 50 | 47 | 58 | 74 | 71 | 68 | 76 | 58 | 71 | 72 | 62 | 84 | 75 | 70 | 71 | 76 | 69 | 69 | 69 |
| Precipitation Potential (%) | 51 | 39 | 30 | 34 | 35 | 25 | 20 | 29 | 38 | 45 | 28 | 28 | 37 | 45 | 50 | 42 | 75 | 62 | 55 | 56 | 64 | 53 | 53 | 53 |
| Relative Humidity (%) | 77 | 80 | 84 | 84 | 85 | 88 | 89 | 90 | 88 | 90 | 89 | 89 | 84 | 81 | 78 | 74 | 70 | 69 | 67 | 64 | 64 | 63 | 64 | 66 |
| Rain | Chc | Chc | Chc | Chc | Chc | Chc | SChc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Ocnl | Lkly | Lkly | Lkly | Lkly | Chc | Chc | Chc |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc |
| Date | 05/21 | |||||||||||||||||||||||
| 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) | 56 | 54 | 53 | 51 | 50 | 49 | 49 | 48 | 47 | 47 | 47 | 48 | 49 | 51 | 53 | 55 | 57 | 59 | 61 | 62 | 63 | 63 | 62 | 60 |
| Dewpoint (°F) | 47 | 47 | 47 | 46 | 46 | 46 | 46 | 46 | 45 | 45 | 45 | 46 | 46 | 46 | 46 | 46 | 46 | 45 | 45 | 45 | 45 | 45 | 45 | 44 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 8 | 6 | 5 | 6 | 6 | 6 | 5 | 5 | 5 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 5 | 5 | 5 | 6 | 6 | 6 |
| Wind Dir | SW | SW | SSW | SSW | SSW | SSW | S | S | S | S | S | S | S | S | S | S | S | S | N | N | N | NNW | NNW | NNW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 69 | 69 | 69 | 50 | 50 | 50 | 64 | 64 | 64 | 74 | 74 | 74 | 68 | 68 | 68 | 61 | 61 | 61 | 44 | 44 | 44 | 62 | 62 | 62 |
| Precipitation Potential (%) | 53 | 53 | 53 | 25 | 25 | 25 | 25 | 25 | 25 | 12 | 12 | 12 | 12 | 12 | 12 | 10 | 10 | 10 | 10 | 10 | 10 | 8 | 8 | 8 |
| Relative Humidity (%) | 73 | 78 | 80 | 84 | 87 | 88 | 89 | 91 | 92 | 93 | 93 | 92 | 89 | 84 | 78 | 71 | 65 | 60 | 56 | 53 | 51 | 51 | 53 | 56 |
| Rain | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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