Newcastle, Washington — live current conditions, hourly and 7-day forecasts, NWS alerts, aviation weather, radar and satellite imagery, tides and marine conditions for Newcastle, King County.
Tides, marine forecast and fishing conditions near Newcastle. Nearest NOAA tide station:
Flight conditions near Newcastle — sourced from the FAA Aviation Weather Center. Nearest reporting station: locating…
Live animated radar for Newcastle and surroundings — RainViewer.
NOAA GOES-16 GEOCOLOR — live animated loop updated every 10 minutes. Shows cloud cover, storm systems and weather patterns across the continental US.
Source: NOAA/NESDIS GOES-East · Public domain · Auto-updates on page reload
Newcastle rests on slopes that tumble towards the broad, shimmering expanse of Lake Washington, its avenues tracing the generous contours of the land. It lies 3.8 miles south-east of Mercer Island, WA (from Mercer Island, WA: bearing 125°T), and is situated 9.4 miles east-south-east of Seattle. The air here, especially as the day begins to soften towards evening, carries a cool, damp kiss from the water, a scent of pine needles and distant, damp earth. Sunlight, when it breaks through the frequent Pacific Northwest clouds, can be startlingly bright, illuminating the verdant tapestry of firs and cedars that still cling to the steeper inclines, hinting at a wilder past just beyond the manicured lawns and quiet cul-de-sacs. The character of Newcastle is one of elegant repose, a place where the natural world has been thoughtfully integrated into the rhythm of modern life, a continuous conversation between the built environment and the ancient, breathing landscape. The story of Newcastle is deeply entwined with the earth beneath its feet, once a rich vein of coal that fueled the early growth of the region and drew a diverse population of miners to its steep hillsides. This industrial past, though largely dormant now, has left its imprint, a subtle resilience in the community's spirit. Today, Newcastle’s economy has broadened, embracing technology and a service sector that supports its growing residential base, yet the echoes of its mining heritage remain, a quiet reminder of the labor that shaped its foundations. The town’s connection to Lake Washington is paramount, offering residents not just scenic vistas but also recreational opportunities, a watery artery that pulses with life and connects Newcastle to the larger Puget Sound.
| Location | Newcastle, King County, Washington |
| Coordinates | 47.538989°N, 122.155677°W |
| Timezone | Pacific Time (America/Los_Angeles) |
| ZIP Code(s) | 98059 |
| Area Code | 206, 253 |
| Page generated | June 2026 |
| Weather data | Open-Meteo (open-source), NOAA National Weather Service |