Great River, New York Weather
Great River, New York — live current conditions, hourly and 7-day forecasts, NWS alerts, radar and satellite imagery, tide predictions, marine conditions and a solunar fishing forecast, soil and crop conditions for Great River, Suffolk County.
Tides, marine forecast and fishing conditions near Great River. Tide source:
Full aviation weather for Great River is published on the Long Island MacArthur Airport (KISP) page, 10 km away. It carries the current METAR decoded into plain language — surface wind, visibility, cloud layers and ceiling, temperature and dewpoint, and altimeter setting — alongside the raw observation as transmitted. 6 airfields within reach of Great River have their own pages, listed below.
The Terminal Aerodrome Forecast (TAF) is shown across its full validity period, with each change group broken out so you can see when conditions are expected to shift. Flight category is derived automatically — VFR, MVFR, IFR or LIFR — from reported ceiling and visibility, with runway details and field elevation alongside. Observations update roughly hourly and forecasts several times a day.
Other airports near Great River: Republic Airport (KFRG) 22 km · Brookhaven Calabro Airport (KHWV) 27 km · Lufker Airport (K49N) 36 km · Francis S Gabreski Airport (KFOK) 46 km · Igor I Sikorsky Memorial Airport (KBDR) 49 km
Conditions reported at KISP describe the airfield itself. Weather 10 km away can differ, particularly in terrain or near the coast. For conditions at Great River specifically, see the current conditions and forecast above.
Soil conditions, frost risk and crop weather for Great River.
About Great River, New York
Great River unfolds along the western edge of Great South Bay, a place where the land, gently sloping and generously wooded, meets the expansive, shimmering water. It lies 2.8 miles east-south-east of Islip, NY (from Islip, NY: bearing 102°T), and is situated 9.6 miles south-south-east of Smithtown. Mature oak and maple trees, their branches often heavy with moss, cast a dappled shade over quiet residential streets, creating a sense of secluded elegance. The air here carries the faint, salty tang of the bay, mingling with the sweet perfume of blooming hydrangeas and roses in meticulously kept gardens. It is a landscape that breathes with a quiet, settled grace, where the call of a distant heron or the rustle of leaves underfoot are the dominant sounds, a gentle counterpoint to the distant hum of civilization. The history of Great River is deeply entwined with the Gilded Age, a period when its serene beauty attracted wealthy New Yorkers seeking respite from the city’s clamor. Grand estates, some remnants of which still grace the landscape, were built along the bay, their architectural ambitions echoing the era’s opulence. The local economy, once driven by the grandeur of these estates and their accompanying staff, has since evolved, with many residents now commuting to other centers for work, yet a strong sense of community endures. The bay itself remains a central feature, offering opportunities for sailing and fishing, and its protective barrier beach forms a natural bulwark, a constant reminder of the ocean’s vast presence just beyond.
Live animated radar for Great River 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 | Great River, Suffolk County, New York |
| Coordinates | 40.72121°N, 73.157614°W |
| Timezone | Eastern Time (America/New_York) |
| ZIP Code(s) | 11739, 11730 |
| Area Code | 516 |
| Page generated | September 2026 |
| Weather data | Open-Meteo (open-source), NOAA National Weather Service |
About This Great River, New York Weather Page
This page provides live weather conditions and forecasts for Great River, New York, including current conditions, a 24-hour hourly forecast, 7-day outlook, NWS extended text forecast, precipitation radar and NOAA GOES-16 satellite imagery. Aviation weather — live METAR observations and TAF forecasts — is published separately on the pages for the nearest reporting airports, linked from the aviation section above. 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 Great River includes coordinates 40.721210°N, 73.157614°W, situated in Suffolk County. ZIP code 11739, 11730. Telephone area code: 516. Timezone: Eastern Time (America/New_York).
Weather data is sourced from the NOAA National Weather Service (NWS) and the open-source Open-Meteo API. 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.
