| Point Forecast: South Seattle WA 47.55N 122.3W (Elev. 200 ft) |
Last Update: 11:26 am PDT Aug 17, 2026 |
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| Date | 08/17 | 08/18 | ||||||||||||||||||||||
| Hour (PDT) | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 |
| Temperature (°F) | 73 | 76 | 77 | 78 | 79 | 78 | 77 | 75 | 71 | 69 | 67 | 66 | 65 | 63 | 62 | 61 | 61 | 60 | 60 | 61 | 61 | 63 | 65 | 68 |
| Dewpoint (°F) | 58 | 59 | 58 | 57 | 58 | 57 | 57 | 57 | 56 | 57 | 57 | 57 | 58 | 57 | 56 | 56 | 57 | 56 | 56 | 57 | 57 | 57 | 58 | 57 |
| Heat Index (°F) | 76 | 77 | 78 | 79 | 78 | 77 | 75 | |||||||||||||||||
| Surface Wind (mph) | 5 | 6 | 6 | 6 | 6 | 5 | 5 | 3 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 3 | 5 | 5 | 6 | 6 | 6 | 6 | 6 |
| Wind Dir | NW | NW | NW | NW | NNW | NNW | NNW | NNW | N | N | NE | NE | NNW | WNW | WSW | SSW | S | S | S | S | S | SSW | SSW | SSW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 16 | 5 | 3 | 4 | 5 | 9 | 20 | 31 | 42 | 43 | 48 | 38 | 38 | 46 | 55 | 64 | 78 | 74 | 77 | 86 | 87 | 77 | 65 | 52 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 60 | 55 | 52 | 49 | 48 | 48 | 50 | 54 | 60 | 65 | 69 | 72 | 77 | 80 | 82 | 85 | 86 | 88 | 88 | 87 | 86 | 82 | 77 | 69 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 08/19 | |||||||||||||||||||||||
| Hour (PDT) | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 |
| Temperature (°F) | 72 | 74 | 77 | 78 | 79 | 79 | 78 | 76 | 71 | 69 | 67 | 66 | 64 | 63 | 61 | 61 | 60 | 59 | 60 | 61 | 62 | 62 | 64 | 67 |
| Dewpoint (°F) | 58 | 58 | 58 | 57 | 57 | 57 | 57 | 58 | 56 | 57 | 57 | 57 | 57 | 56 | 55 | 55 | 55 | 54 | 55 | 56 | 56 | 56 | 56 | 57 |
| Heat Index (°F) | 77 | 78 | 79 | 79 | 78 | 76 | ||||||||||||||||||
| Surface Wind (mph) | 5 | 5 | 5 | 5 | 3 | 3 | 3 | 5 | 5 | 5 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 3 | 3 |
| Wind Dir | SW | SW | SW | WSW | WSW | WSW | WSW | W | W | W | SW | SW | SW | S | S | S | SSW | SSW | SSW | SSW | SSW | SSW | SSW | SSW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 43 | 27 | 12 | 12 | 10 | 10 | 10 | 32 | 32 | 32 | 57 | 57 | 57 | 68 | 68 | 68 | 87 | 87 | 87 | 80 | 80 | 80 | 63 | 63 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 62 | 57 | 52 | 49 | 47 | 47 | 49 | 54 | 60 | 66 | 69 | 73 | 77 | 79 | 80 | 82 | 83 | 84 | 85 | 84 | 82 | 79 | 75 | 69 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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