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Dennis, Massachusetts Weather

Dennis, Massachusetts — live current conditions, hourly and 7-day forecasts, NWS alerts, aviation weather, radar and satellite imagery, tides and marine conditions for Dennis, Barnstable 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 Dennis. Nearest NOAA tide station:

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✈️ Aviation Weather

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

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NWS Extended Forecast
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📡 Precipitation Radar

Live animated radar for Dennis 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 Dennis, Massachusetts

Dennis sprawls across the mid-Cape, a landscape shaped by the relentless push and pull of the Atlantic and the quieter, reflective waters of its bays. It lies 5.8 miles south-south-west of Cape Cod, MA (from Cape Cod, MA: bearing 205°T), and is situated 6.0 miles east-north-east of Barnstable. Rolling hills, softened by centuries of wind and weather, give way to the sandy textures of Cape Cod, where scrub pine and bayberry cling tenaciously to the earth. The air here carries the brine of the sea, a constant reminder of the ocean's proximity, and in the late afternoon, the light often takes on a diffused, hazy quality, softening the edges of the dunes and casting long shadows across the marsh grasses. Water is the dominant character, from the vibrant blue of Nantucket Sound to the whispering channels of the Bass River and the tranquil expanse of Cape Cod Bay, all of which dictate the flow of life and the very breath of Dennis. The history of Dennis is deeply entwined with the sea and the ingenuity of its people. Established in 1793, it was once a vital hub for whaling, its seafaring heritage evident in the weathered clapboard houses that still line some of its older roads. Today, its economy draws strength from tourism, with visitors drawn to its pristine beaches and the allure of the Cape's distinctive charm, yet it retains a working spirit, particularly in the fishing fleets that still ply the waters of the bays. The Cape Cod Canal, a modern marvel of engineering, bisects the Cape, subtly altering the traditional flow of traffic and commerce, and in Dennis, this intersection of old and new rhythms is palpable, a quiet hum beneath the surface of everyday life.

LocationDennis, Barnstable County, Massachusetts
Coordinates41.735387°N, 70.193909°W
TimezoneEastern Time (America/New_York)
ZIP Code(s)02638
Area Code339, 351, 413, 508, 617, 774, 781, 857, 978
Page generatedJune 2026
Weather dataOpen-Meteo (open-source), NOAA National Weather Service