Marine Weather Net

Cohasset, MA Weather Forecast




Cohasset, Massachusetts

 Lat: 42.24N, Lon: 70.8W

Current Conditions Updated: 754 PM EDT SUN JUL 12 2026

Mostly Clear
Temp: 73°F
  • Humidity:
  • 59%
  • Winds:
  • 6 MPH ESE
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.19 in.
  • Dewpoint:
  • 58°F
  • Heat index:
  • 77°F

  • Sunrise:
  • 5:16 AM EDT
  • Sunset:
  • 8:18 PM EDT
  • Moonrise:
  • 2:43 AM EDT
  • Moonset:
  • 7:15 PM EDT

TONIGHT

MOSTLY CLEAR
Lo: 61°F

MONDAY

SUNNY

Hi: 89°F
Lo: 69°F

TUESDAY

SUNNY

Hi: 99°F
Lo: 77°F

WEDNESDAY

SUNNY

Hi: 99°F
Lo: 70°F
Weather Forecast In Detail:
Forecast Issued: 703 PM EDT Sun Jul 12 2026

Tonight...Mostly clear. Lows in the lower 60s. South winds 5 to 10 mph, becoming southwest after midnight.
Monday...Sunny. Highs in the upper 80s. Southwest winds 10 to 15 mph.
Monday Night...Mostly clear. Lows in the upper 60s. Southwest winds 10 to 15 mph.
Tuesday...Sunny, hot with highs in the upper 90s. Southwest winds 10 to 15 mph. Gusts up to 20 mph, increasing to 30 mph in the afternoon.
Tuesday Night...Mostly clear. Not as cool. Humid with lows in the upper 70s. West winds 10 to 15 mph. Gusts up to 30 mph, Decreasing to 20 mph after midnight.
Wednesday...Sunny, hot with highs in the upper 90s.
Wednesday Night...Partly cloudy. Hot. Lows around 70. Highs in the lower 90s.
Thursday...Partly cloudy. Hot. Lows around 70. Highs in the lower 90s.
Friday...Sunny. Highs in the upper 80s.
Friday Night And Saturday...Partly cloudy. Lows in the mid 60s. Highs in the mid 80s.
Saturday Night...Mostly cloudy with a 30 percent chance of showers. Lows in the mid 60s.
Sunday...Mostly sunny. Highs in the lower 80s.
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