New Castle, Delaware Weather
New Castle, Delaware — live current conditions, hourly and 7-day forecasts, NWS alerts, aviation weather, radar and satellite imagery, tide predictions, marine conditions and a solunar fishing forecast for New Castle, New Castle County.
Tides, marine forecast and fishing conditions near New Castle. Tide source:
Flight conditions near New Castle. Data source: locating…
About New Castle, Delaware
New Castle, Delaware, unfolds with a quiet dignity along the broad curve of the Delaware River. It lies 5.9 miles south of Wilmington, DE (from Wilmington, DE: bearing 190°T), and is situated 9.9 miles east of Newark. Its landscape, a gentle transition from the river's edge to rolling hills, is marked by the sturdy brick homes and mature trees that line its historic streets. The air here, especially on a late afternoon when the sun begins its descent, carries a faint, salty tang from the river, mingling with the scent of blooming magnolias in the warmer months. Cobblestone remnants peek through the asphalt in places, a subtle reminder of pathways worn smooth by generations. The overall character of New Castle is one of enduring grace, a place where the past feels not distant, but comfortably present. This riverfront settlement, rich in colonial history, was once the capital of Delaware, a vital hub for trade and governance. Its economy, historically tied to the river and agriculture, has evolved, yet the echoes of its past are palpable in the preserved architecture and the enduring spirit of its residents. The historic New Castle Court House stands as a proud sentinel, having witnessed pivotal moments in the region's formation. While industry has ebbed and flowed, the deep-water port continues to play a role, and the nearby natural beauty of the Delaware Estuary provides a constant, calming presence, a reminder of the natural rhythms that have shaped New Castle for centuries.
Live animated radar for New Castle 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
| Location | New Castle, New Castle County, Delaware |
| Coordinates | 39.662057°N, 75.566313°W |
| Timezone | Eastern Time (America/New_York) |
| ZIP Code(s) | 19720, 19721, 19726 |
| Area Code | 302 |
| Page generated | July 2026 |
| Weather data | Open-Meteo (open-source), NOAA National Weather Service |
About This New Castle, Delaware Weather Page
This page provides live weather conditions and forecasts for New Castle, Delaware, including current conditions, a 24-hour hourly forecast, 7-day outlook, NWS extended text forecast, real-time aviation weather (live METAR and TAF reports from the nearest reporting airport, with a modeled estimate shown when no station is in range), precipitation radar and NOAA GOES-16 satellite imagery. Additional sections may include tide predictions, wave height, wave direction and sea-surface temperature, a barometric pressure trend, and a solunar-based fishing forecast with a fishing-conditions rating for coastal localities, and soil temperature, crop weather and live USGS river gauge data for agricultural areas near a monitored waterway. All data updates automatically on every page visit.
Location data for New Castle includes coordinates 39.662057°N, 75.566313°W, situated in New Castle County. ZIP code 19720, 19721, 19726. Telephone area code: 302. Timezone: Eastern Time (America/New_York).
Weather data is sourced from the NOAA National Weather Service (NWS) and the open-source Open-Meteo API. Aviation data is sourced from aviationweather.gov (NOAA), with a modeled estimate used where no nearby reporting station is available. River and stream data is sourced from the USGS National Water Information System. Tide predictions are sourced from NOAA CO-OPS; marine and solunar data are modeled from Open-Meteo and public sunrise/moon calculations and should be treated as a general guide alongside on-the-water conditions. Radar is provided by RainViewer. Satellite imagery is sourced from NOAA/NESDIS GOES-East and is public domain.
