| Point Forecast: Seattle-Tacoma International Airport WA 47.46N 122.31W (Elev. 122 m) |
Last Update: 8:00 pm PDT Jul 13, 2025 |
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| Date | 07/13 | 07/14 | ||||||||||||||||||||||
| Hour (PDT) | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| Temperature (°C) | 23 | 22 | 21 | 20 | 19 | 18 | 18 | 17 | 17 | 17 | 17 | 18 | 18 | 19 | 20 | 21 | 22 | 23 | 23 | 23 | 23 | 23 | 22 | 21 |
| Dewpoint (°C) | 14 | 14 | 14 | 14 | 14 | 13 | 14 | 14 | 13 | 14 | 13 | 13 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 |
| Heat Index (°C) | ||||||||||||||||||||||||
| Surface Wind (mph) | 8 | 8 | 9 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 5 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 9 | 7 |
| Wind Dir | NE | NE | NE | NNE | NE | NNE | NNE | NNE | NNE | NNE | NNE | NNE | N | N | NNW | NNW | NW | NW | NNW | NNW | NNW | NNW | N | N |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 23 | 18 | 28 | 26 | 26 | 46 | 38 | 57 | 67 | 72 | 72 | 86 | 85 | 83 | 70 | 78 | 67 | 65 | 58 | 46 | 32 | 12 | 8 | 7 |
| Precipitation Potential (%) | 3 | 2 | 3 | 3 | 3 | 3 | 3 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 58 | 62 | 66 | 68 | 70 | 75 | 78 | 80 | 80 | 80 | 77 | 75 | 74 | 69 | 66 | 63 | 60 | 54 | 53 | 51 | 50 | 52 | 53 | 59 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/15 | |||||||||||||||||||||||
| Hour (PDT) | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| Temperature (°C) | 19 | 19 | 18 | 17 | 16 | 16 | 15 | 15 | 16 | 17 | 18 | 19 | 21 | 23 | 25 | 27 | 28 | 29 | 29 | 30 | 29 | 28 | 27 | 26 |
| Dewpoint (°C) | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 12 |
| Heat Index (°C) | 25 | 27 | 27 | 28 | 28 | 29 | 28 | 28 | 27 | 26 | ||||||||||||||
| Surface Wind (mph) | 7 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 7 | 7 | 7 | 9 | 9 | 9 | 11 | 11 | 11 | 11 | 11 | 11 | 7 | 7 |
| Wind Dir | N | NNE | NNE | NNE | NE | NE | NE | NNE | NNE | NNE | N | N | N | N | N | N | N | N | N | N | N | N | N | N |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 7 | 7 | 7 | 7 | 5 | 5 | 5 | 7 | 7 | 7 | 7 | 7 | 7 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 4 | 4 |
| Precipitation Potential (%) | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 63 | 64 | 66 | 69 | 72 | 75 | 77 | 77 | 75 | 72 | 68 | 63 | 58 | 52 | 47 | 42 | 38 | 35 | 33 | 32 | 32 | 34 | 37 | 41 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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