Marine Weather Net

Cohasset, MA Weather Forecast




Cohasset, Massachusetts

 Lat: 42.24N, Lon: 70.8W

Current Conditions Updated: 154 AM EDT FRI MAR 20 2026

Overcast
Temp: 37°F
  • Humidity:
  • 72%
  • Winds:
  • 12 MPH SW
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.16 in.
  • Dewpoint:
  • 29°F
  • Heat index:
  • 37°F

  • Sunrise:
  • 6:45 AM EDT
  • Sunset:
  • 6:54 PM EDT
  • Moonrise:
  • 7:17 AM EDT
  • Moonset:
  • 9:14 PM EDT

TONIGHT

MOSTLY CLOUDY
Lo: 30°F

FRIDAY

SUNNY

Hi: 51°F
Lo: 41°F

SATURDAY

MOSTLY SUNNY
Hi: 55°F
Lo: 35°F

SUNDAY

CHANCE OF RAIN
Hi: 51°F
Lo: 39°F
Precip: 40%
Weather Forecast In Detail:
Forecast Issued: 1005 PM EDT Thu Mar 19 2026

Overnight...Mostly cloudy. Near steady temperature in the lower 30s. Southwest winds around 5 mph.
Friday...Sunny in the morning, then becoming mostly cloudy. Not as cool with highs in the lower 50s. West winds around 5 mph, increasing to south 15 to 20 mph with gusts up to 35 mph in the afternoon.
Friday Night...Showers, mainly in the evening. Lows in the lower 40s. Southwest winds 15 to 20 mph with gusts up to 35 mph, diminishing to 5 to 10 mph with gusts up to 25 mph after midnight. Chance of rain 90 percent.
Saturday...Mostly sunny. Highs in the mid 50s. Northwest winds 10 to 15 mph with gusts up to 25 mph.
Saturday Night...Mostly cloudy. Lows in the mid 30s. Northwest winds 10 to 15 mph, becoming west around 5 mph after midnight.
Sunday...Mostly cloudy with a 40 percent chance of rain. Highs in the lower 50s.
Sunday Night...Rain likely. Lows in the upper 30s. Chance of rain 70 percent.
Monday...Rain likely. Highs in the upper 40s. Chance of rain 60 percent.
Monday Night...Partly cloudy. Lows in the upper 20s. Highs in the lower 40s.
Tuesday...Partly cloudy. Lows in the upper 20s. Highs in the lower 40s.
Wednesday...Partly sunny with a 30 percent chance of rain. Highs in the mid 40s.
Wednesday Night And Thursday...Mostly cloudy. Lows in the upper 20s. Highs in the upper 40s.
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