Marine Weather Net

Chatham, MA Weather Forecast


Marine Forecast: Nantucket Sound


Chatham, Massachusetts

 Lat: 41.68N, Lon: 69.96W

Current Conditions Updated: 1252 PM EST TUE DEC 30 2025

Partly Cloudy
Temp: 31°F
  • Humidity:
  • 35%
  • Winds:
  • 16 MPH W
  • Gusts:
  • 32 MPH
  • Barometer:
  • 29.49 in.
  • Dewpoint:
  • 7°F
  • Heat index:
  • 31°F

  • Sunrise:
  • 7:05 AM EST
  • Sunset:
  • 4:16 PM EST
  • Moonrise:
  • 12:36 PM EST
  • Moonset:
  • 2:49 AM EST

THIS AFTERNOON

PARTLY SUNNY
Lo: 25°F

WEDNESDAY

PARTLY SUNNY
Hi: 31°F
Lo: 30°F

NEW YEARS DAY

PARTLY SUNNY
Hi: 30°F
Lo: 25°F
Precip: 50%

SATURDAY

MOSTLY SUNNY
Hi: 31°F
Lo: 21°F
Weather Forecast In Detail:
Forecast Issued: 1004 AM EST Tue Dec 30 2025

WIND ADVISORY REMAINS IN EFFECT UNTIL 1 AM EST WEDNESDAY
This Afternoon...Partly sunny and blustery. Much cooler. Near steady temperature in the upper 20s. West winds 20 to 25 mph with gusts up to 50 mph.
Tonight...Partly cloudy and blustery. Near steady temperature in the mid 20s. West winds 15 to 25 mph with gusts up to 45 mph.
Wednesday...Partly sunny. Highs in the lower 30s. West winds 15 to 20 mph with gusts up to 30 mph.
Wednesday Night...Snow likely. Light snow accumulation possible. Near steady temperature around 30. Southwest winds 5 to 10 mph with gusts up to 20 mph. Chance of snow 70 percent.
New Years Day...Partly sunny with a 50 percent chance of snow. Highs around 30. West winds 10 to 15 mph with gusts up to 25 mph.
Thursday Night And Friday...Partly cloudy. Lows 15 to 20. Highs around 30.
Friday Night...Mostly clear. Near steady temperature in the mid 20s.
Saturday...Mostly sunny. Highs in the lower 30s.
Saturday Night...Mostly cloudy. Lows around 20.
Sunday And Sunday Night...Partly cloudy. Highs around 30. Lows in the lower 20s.
Monday...Mostly cloudy with a chance of snow and rain. Highs in the mid 30s. Chance of precipitation 30 percent.
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