Port Jefferson, New York Weather
Port Jefferson, 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 for Port Jefferson, Suffolk County.
Tides, marine forecast and fishing conditions near Port Jefferson. Tide source:
Full aviation weather for Port Jefferson is published on the Long Island MacArthur Airport (KISP) page, 17 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 Port Jefferson 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 Port Jefferson: Brookhaven Calabro Airport (KHWV) 22 km · Igor I Sikorsky Memorial Airport (KBDR) 25 km · Lufker Airport (K49N) 30 km · Republic Airport (KFRG) 38 km · Tweed New Haven Airport (KHVN) 38 km
Conditions reported at KISP describe the airfield itself. Weather 17 km away can differ, particularly in terrain or near the coast. For conditions at Port Jefferson specifically, see the current conditions and forecast above.
About Port Jefferson, New York
Port Jefferson breathes the salty tang of the Long Island Sound, its harbor a gentle curve against the northern shore. It lies 6.3 miles north-north-east of Centereach, NY (from Centereach, NY: bearing 15°T), and is situated 9.3 miles north-east of Smithtown. Rolling hills, softened by centuries of wind and weather, give way to the bustling waterfront, where weathered pilings stand sentinel over the water. The air here hums with a unique coastal melody – the cry of gulls, the distant thrum of ferries, the murmur of conversations drifting from open doorways. Sunlight, especially in the late afternoon, spills across the water in shimmering ribbons, catching the sails of pleasure craft and glinting off the polished brass of the harbor master's office. This is a place where history is not just remembered but felt in the very cobblestones beneath your feet. Once a vital hub for shipbuilding and whaling, Port Jefferson’s maritime legacy still echoes in its narrow, winding streets and the sturdy architecture that lines the waterfront. Today, the local economy thrives on a blend of tourism, ferry services connecting to Connecticut, and a vibrant array of shops and restaurants that draw visitors and residents alike. The Stony Brook University campus, a short drive inland, injects a youthful energy, while the charming village green remains the heart of community gatherings, a testament to Port Jefferson's enduring spirit.
Live animated radar for Port Jefferson 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 | Port Jefferson, Suffolk County, New York |
| Coordinates | 40.946488°N, 73.069273°W |
| Timezone | Eastern Time (America/New_York) |
| ZIP Code(s) | 11777 |
| Area Code | 516 |
| Page generated | September 2026 |
| Weather data | Open-Meteo (open-source), NOAA National Weather Service |
About This Port Jefferson, New York Weather Page
This page provides live weather conditions and forecasts for Port Jefferson, 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 Port Jefferson includes coordinates 40.946488°N, 73.069273°W, situated in Suffolk County. ZIP code 11777. 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.
