Marine Weather Net

Dennis Port, MA Weather Forecast


Marine Forecast: Nantucket Sound


Dennis Port, Massachusetts

 Lat: 41.66N, Lon: 70.13W

Current Conditions Updated: 852 AM EDT THU SEP 17 2026

Mostly Cloudy
Temp: 70°F
  • Humidity:
  • 87%
  • Winds:
  • 6 MPH SSW
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.27 in.
  • Dewpoint:
  • 66°F
  • Heat index:
  • 70°F

  • Sunrise:
  • 6:20 AM EDT
  • Sunset:
  • 6:46 PM EDT
  • Moonrise:
  • 1:25 PM EDT
  • Moonset:
  • 10:00 PM EDT

TODAY

MOSTLY SUNNY
Hi: 75°F
Lo: 65°F

FRIDAY

MOSTLY SUNNY
Hi: 71°F
Lo: 55°F
Precip: 50%

SATURDAY

MOSTLY SUNNY
Hi: 61°F
Lo: 55°F

MONDAY

CHANCE OF SHOWERS
Hi: 65°F
Lo: 55°F
Precip: 40%
Weather Forecast In Detail:
Forecast Issued: 702 AM EDT Thu Sep 17 2026

Today...Mostly sunny. Highs in the mid 70s. Southwest winds 5 to 10 mph.
Tonight...Mostly cloudy. A slight chance of showers in the evening, then a chance of showers after midnight. Humid with lows in the mid 60s. Southwest winds 10 to 15 mph. Chance of rain 50 percent.
Friday...Mostly cloudy with a chance of showers in the morning, then mostly sunny in the afternoon. Patchy fog in the morning. Highs in the lower 70s. Northwest winds 10 to 15 mph, becoming north in the afternoon. Gusts up to 25 mph. Chance of rain 50 percent.
Friday Night...Partly cloudy. Cooler. Less humid with lows in the lower 50s. North winds 10 to 15 mph with gusts up to 25 mph.
Saturday...Mostly sunny. Highs in the lower 60s. Northeast winds 10 to 15 mph.
Saturday Night...Mostly cloudy. Lows in the upper 40s. Temperature rising into the upper 50s after midnight.
Sunday And Sunday Night...Showers likely. Highs in the mid 60s. Lows in the mid 50s. Chance of rain 70 percent.
Monday...Mostly cloudy with a 40 percent chance of showers. Highs in the mid 60s.
Monday Night And Tuesday...Mostly cloudy. Lows in the mid 50s. Highs in the mid 60s.
Tuesday Night And Wednesday...Partly cloudy. Lows in the mid 50s. Highs in the mid 60s.
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