Marine Weather Net

Chatham, MA Weather Forecast


Marine Forecast: Nantucket Sound


Chatham, Massachusetts

 Lat: 41.68N, Lon: 69.96W

Current Conditions Updated: 452 PM EDT SAT APR 4 2026

Overcast
Temp: 41°F
  • Humidity:
  • 73%
  • Winds:
  • 17 MPH ENE
  • Gusts:
  • 28 MPH
  • Barometer:
  • 30.37 in.
  • Dewpoint:
  • 33°F
  • Heat index:
  • 41°F

  • Sunrise:
  • 6:16 AM EDT
  • Sunset:
  • 7:07 PM EDT
  • Moonrise:
  • 10:14 PM EDT
  • Moonset:
  • 7:04 AM EDT

TONIGHT

ISOLATED SHOWERS
Lo: 37°F
Precip: 20%

SUNDAY

CHANCE OF T-STORM
Hi: 51°F
Lo: 39°F
Precip: 100%

MONDAY

MOSTLY SUNNY
Hi: 49°F
Lo: 35°F

TUESDAY

PARTLY SUNNY
Hi: 49°F
Lo: 29°F
Precip: 50%
Weather Forecast In Detail:
Forecast Issued: 402 PM EDT Sat Apr 04 2026

Tonight...Cloudy. Patchy drizzle this evening, then isolated showers with patchy drizzle after midnight. Near steady temperature in the upper 30s. East winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent.
Sunday...A slight chance of showers with patchy drizzle in the morning, then showers with isolated thunderstorms in the afternoon. Highs in the lower 50s. Southwest winds 15 to 20 mph with gusts up to 30 mph. Chance of rain near 100 percent.
Sunday Night...Mostly cloudy. Showers in the evening. Lows in the upper 30s. Southwest winds 10 to 15 mph, becoming west after midnight. Gusts up to 25 mph. Chance of rain 90 percent.
Monday...Mostly sunny. Highs in the upper 40s. West winds 10 to 15 mph with gusts up to 25 mph.
Monday Night...Partly cloudy. Lows in the mid 30s. West winds 5 to 10 mph.
Tuesday...Partly sunny with a 50 percent chance of rain showers. Highs in the upper 40s.
Tuesday Night...Partly cloudy. Lows in the upper 20s.
Wednesday...Sunny, cold with highs around 40.
Wednesday Night And Thursday...Mostly clear. Lows in the lower 30s. Highs in the upper 40s.
Thursday Night...Partly cloudy. Lows in the lower 40s. Highs in the lower 50s.
Friday...Partly cloudy. Lows in the lower 40s. Highs in the lower 50s.
Saturday...Partly cloudy. Lows in the lower 40s. Highs in the lower 50s.
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