Marine Weather Net

Winthrop, MA Weather Forecast


Marine Forecast: Boston Harbor


Winthrop, Massachusetts

 Lat: 42.38N, Lon: 70.98W

Current Conditions Updated: 954 PM EDT TUE SEP 30 2025

Mostly Clear
Temp: 61°F
  • Humidity:
  • 75%
  • Winds:
  • 7 MPH N
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.13 in.
  • Dewpoint:
  • 53°F
  • Heat index:
  • 61°F

  • Sunrise:
  • 6:37 AM EDT
  • Sunset:
  • 6:27 PM EDT
  • Moonrise:
  • 3:13 PM EDT
  • Moonset:
  • 11:53 PM EDT

TONIGHT

MOSTLY CLEAR
Lo: 51°F

WEDNESDAY

SUNNY

Hi: 61°F
Lo: 49°F

THURSDAY

SUNNY

Hi: 60°F
Lo: 45°F

FRIDAY

SUNNY

Hi: 71°F
Lo: 60°F
Weather Forecast In Detail:
Forecast Issued: 1002 PM EDT Tue Sep 30 2025

Overnight...Mostly clear. Lows in the lower 50s. Northeast winds 10 to 15 mph. Gusts up to 25 mph.
Wednesday...Sunny, cooler with highs in the lower 60s. Northeast winds 15 to 20 mph with gusts up to 30 mph.
Wednesday Night...Mostly clear. Lows in the upper 40s. Northeast winds 10 to 15 mph with gusts up to 30 mph.
Thursday...Sunny. Highs around 60. Northeast winds 5 to 10 mph with gusts up to 20 mph.
Thursday Night...Mostly clear. Lows in the mid 40s. Southeast winds around 5 mph, becoming southwest around 5 mph after midnight.
Friday...Sunny. Not as cool with highs in the lower 70s.
Friday Night And Saturday...Clear. Lows in the lower 50s. Highs in the upper 70s.
Saturday Night...Mostly clear. Lows in the upper 50s. Highs around 80.
Sunday...Mostly clear. Lows in the upper 50s. Highs around 80.
Monday...Mostly clear. Lows in the upper 50s. Highs around 80.
Monday Night And Tuesday...Partly cloudy. Lows around 60. Highs in the upper 70s.
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