Marine Weather Net

Yarmouth Port, MA Weather Forecast


Marine Forecast: Cape Cod BayCape Cod Bay


Yarmouth Port, Massachusetts

 Lat: 41.70N, Lon: 70.25W

Current Conditions Updated: 856 PM EDT THU SEP 17 2026

Partly Cloudy
Temp: 71°F
  • Humidity:
  • 86%
  • Winds:
  • 10 MPH SSW
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.12 in.
  • Dewpoint:
  • 67°F
  • Heat index:
  • 71°F

  • Sunrise:
  • 6:20 AM EDT
  • Sunset:
  • 6:47 PM EDT
  • Moonrise:
  • 1:26 PM EDT
  • Moonset:
  • 10:00 PM EDT

TONIGHT

CHANCE OF SHOWERS
Lo: 69°F
Precip: 50%

FRIDAY

PARTLY SUNNY
Lo: 55°F

SATURDAY

MOSTLY SUNNY
Hi: 65°F
Lo: 55°F

SUNDAY

CHANCE OF SHOWERS
Hi: 65°F
Lo: 59°F
Precip: 50%
Weather Forecast In Detail:
Forecast Issued: 1002 PM EDT Thu Sep 17 2026

Overnight...Mostly cloudy. A slight chance of showers, then a chance of showers. Patchy fog. Near steady temperature in the upper 60s. Southwest winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 50 percent.
Friday...Partly sunny in the morning, then clearing. Patchy fog in the morning. Near steady temperature in the upper 60s. Northwest winds 5 to 10 mph, becoming north 10 to 15 mph in the afternoon.
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 mid 60s. Northeast winds 10 to 15 mph.
Saturday Night...Partly cloudy. Near steady temperature in the mid 50s. Southeast winds around 5 mph.
Sunday...Mostly cloudy with a 50 percent chance of showers. Highs in the mid 60s.
Sunday Night...Showers likely. Lows in the upper 50s. Chance of rain 70 percent.
Monday...Mostly cloudy with a 50 percent chance of showers. Highs in the mid 60s.
Monday Night And Tuesday...Mostly cloudy. A 30 percent chance of showers. Lows in the mid 50s. Highs in the lower 60s.
Tuesday Night...Mostly cloudy. Lows in the mid 50s.
Wednesday And Wednesday Night...Partly cloudy and breezy. Highs in the lower 60s. Lows in the mid 50s.
Thursday...Partly sunny with a 30 percent chance of showers. Highs in the lower 60s.
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