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Lake Hopatcong, New Jersey Weather

Lake Hopatcong, New Jersey — live current conditions, hourly and 7-day forecasts, NWS alerts, aviation weather, radar and satellite imagery, tides and marine conditions for Lake Hopatcong, Morris County.

🌡️ Current Conditions
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24-Hour Forecast
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Current Conditions Detail
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7-Day Forecast
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🌊 Marine & Fishing

Tides, marine forecast and fishing conditions near Lake Hopatcong. Nearest NOAA tide station:

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✈️ Aviation Weather

Flight conditions near Lake Hopatcong — sourced from the FAA Aviation Weather Center. Nearest reporting station: locating…

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🌿 Air Quality
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NWS Extended Forecast
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📡 Precipitation Radar

Live animated radar for Lake Hopatcong and surroundings — RainViewer.

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🛰️ Satellite Imagery

NOAA GOES-16 GEOCOLOR — live animated loop updated every 10 minutes. Shows cloud cover, storm systems and weather patterns across the continental US.

NOAA GOES-16 CONUS GEOCOLOR satellite animated loop
🛰️ GEOCOLOR loop 🌡️ Infrared (IR) 🌀 NHC Hurricane Satellite 🔗 NOAA Full Viewer

Source: NOAA/NESDIS GOES-East · Public domain · Auto-updates on page reload

🌙 Astronomy
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About Lake Hopatcong, New Jersey

Lake Hopatcong, a sprawling expanse of blue, mirrors the changing New Jersey sky, its shores a mosaic of rocky outcrops and sandy coves. It lies 6.3 miles north-north-west of Randolph, NJ (from Randolph, NJ: bearing 347°T), and is situated 9.0 miles north-east of Mount Olive. The landscape around Lake Hopatcong is a gentle, rolling terrain, softened by dense woodlands that spill down to the water's edge, their leaves rustling with a sound like distant conversation. In the summer, the air hums with the low thrum of boat engines and the occasional sharp cry of a gull, a sound that seems to belong to the very texture of the humid air. The water itself, a deep, cool green in the shallows and a mysterious, inky blue further out, is the undisputed heart of this place, its currents dictating the rhythm of life for those who call its perimeter home. This vast body of water, the largest in New Jersey, carries the echoes of a different era when it was a vital artery for commerce and a summer destination for city dwellers seeking respite. The old Morris Canal, now largely a memory, once connected this inland lake to the industrial centers of the east, a ghost of past ambition that still whispers through the reedy marshes. Today, the economy of Lake Hopatcong is largely sustained by tourism and recreation, its marinas and lakeside eateries bustling with activity during the warmer months, a vibrant testament to the enduring appeal of its aquatic charm. Even in the quiet chill of autumn, when the deciduous trees shed their fiery cloaks, the lake retains a certain gravity, a placid grandeur that draws visitors back, year after year, to its familiar, inviting shores.

LocationLake Hopatcong, Morris County, New Jersey
Coordinates40.948432°N, 74.617105°W
TimezoneEastern Time (America/New_York)
ZIP Code(s)07849
Area Code201, 551, 609, 640, 732, 848, 856, 862, 908, 973
Page generatedJune 2026
Weather dataOpen-Meteo (open-source), NOAA National Weather Service