| Point Forecast: Seatac WA 47.44N 122.3W (Elev. 358 ft) |
Last Update: 9:40 am PDT Jun 21, 2024 |
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| Date | 06/21 | 06/22 | ||||||||||||||||||||||
| Hour (PDT) | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 |
| Temperature (°F) | 78 | 80 | 82 | 84 | 84 | 86 | 84 | 83 | 79 | 72 | 69 | 66 | 64 | 63 | 60 | 58 | 57 | 56 | 56 | 57 | 59 | 62 | 65 | 68 |
| Dewpoint (°F) | 54 | 52 | 50 | 50 | 49 | 50 | 50 | 50 | 51 | 50 | 50 | 49 | 49 | 50 | 47 | 48 | 47 | 46 | 46 | 47 | 47 | 48 | 48 | 49 |
| Heat Index (°F) | 78 | 80 | 81 | 82 | 82 | 84 | 82 | 81 | 79 | |||||||||||||||
| Surface Wind (mph) | 6 | 6 | 6 | 6 | 5 | 6 | 3 | 3 | 5 | 5 | 6 | 6 | 5 | 5 | 3 | 3 | 3 | 6 | 5 | 5 | 7 | 7 | 7 | 7 |
| Wind Dir | WNW | WNW | WNW | WNW | WNW | W | W | W | NNW | NNW | NE | ENE | NE | NE | N | NNW | SSW | SW | SW | SW | SSW | SSW | SSW | SW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 11 | 25 | 26 | 19 | 29 | 18 | 23 | 23 | 41 | 52 | 48 | 46 | 58 | 55 | 63 | 82 | 83 | 80 | 81 | 67 | 52 | 31 | 36 | 41 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 43 | 38 | 33 | 31 | 30 | 29 | 31 | 32 | 37 | 46 | 51 | 55 | 59 | 62 | 63 | 68 | 69 | 69 | 70 | 70 | 65 | 60 | 55 | 50 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 06/23 | |||||||||||||||||||||||
| Hour (PDT) | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 |
| Temperature (°F) | 71 | 75 | 77 | 78 | 79 | 78 | 76 | 74 | 71 | 68 | 65 | 62 | 61 | 60 | 59 | 57 | 56 | 55 | 55 | 56 | 57 | 58 | 59 | 60 |
| Dewpoint (°F) | 49 | 49 | 49 | 49 | 49 | 50 | 52 | 52 | 53 | 53 | 53 | 53 | 52 | 52 | 51 | 50 | 49 | 48 | 48 | 47 | 47 | 47 | 46 | 46 |
| Heat Index (°F) | 75 | 77 | 78 | 79 | 78 | 76 | ||||||||||||||||||
| Surface Wind (mph) | 7 | 7 | 11 | 11 | 11 | 13 | 13 | 13 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 11 | 11 | 11 | 15 | 15 | 15 | 13 |
| Wind Dir | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SSW | SSW | SSW | SSW | SSW | SSW | SSW | SSW | SSW | SW | SW | SW | SW |
| Gust | 20 | 20 | 20 | |||||||||||||||||||||
| Sky Cover (%) | 41 | 41 | 34 | 34 | 34 | 19 | 19 | 19 | 24 | 24 | 24 | 39 | 39 | 39 | 46 | 46 | 46 | 45 | 45 | 45 | 65 | 65 | 65 | 59 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 5 | 5 | 5 | 5 | 5 | 15 | 15 | 15 | 15 | 15 | 15 | 11 |
| Relative Humidity (%) | 45 | 40 | 37 | 35 | 36 | 38 | 42 | 47 | 53 | 59 | 66 | 71 | 74 | 75 | 76 | 77 | 78 | 78 | 77 | 73 | 69 | 66 | 63 | 60 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | SChc | SChc | SChc | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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