Marine Weather Net

Winthrop, MA Weather Forecast


Marine Forecast: Boston Harbor


Winthrop, Massachusetts

 Lat: 42.38N, Lon: 70.98W

Current Conditions Updated: 854 PM EDT WED APR 8 2026

Mostly Clear
Temp: 36°F
  • Humidity:
  • 58%
  • Winds:
  • 12 MPH S
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.61 in.
  • Dewpoint:
  • 23°F
  • Heat index:
  • 36°F

  • Sunrise:
  • 6:13 AM EDT
  • Sunset:
  • 7:16 PM EDT
  • Moonrise:
  • 1:22 AM EDT
  • Moonset:
  • 9:43 AM EDT

TONIGHT

CLEAR

Lo: 31°F

THURSDAY

SUNNY

Hi: 55°F
Lo: 35°F

FRIDAY

SUNNY

Hi: 65°F
Lo: 49°F

SATURDAY

PARTLY SUNNY
Hi: 59°F
Lo: 60°F
Precip: 40%
Weather Forecast In Detail:
Forecast Issued: 701 PM EDT Wed Apr 08 2026

Tonight...Clear. Lows in the lower 30s. Southeast winds around 5 mph, becoming southwest around 5 mph after midnight.
Thursday...Sunny. Not as cool with highs in the mid 50s. South winds 10 to 15 mph.
Thursday Night...Mostly clear. Lows in the mid 30s. South winds 10 to 15 mph, becoming southwest around 5 mph after midnight.
Friday...Sunny. Not as cool with highs in the mid 60s. Southwest winds 5 to 10 mph. Gusts up to 20 mph in the afternoon.
Friday Night...Mostly cloudy with a 50 percent chance of showers. Not as cool with lows in the upper 40s. Southwest winds 5 to 10 mph. Gusts up to 20 mph in the evening.
Saturday...Partly sunny with a 40 percent chance of showers. Highs in the upper 50s.
Saturday Night And Sunday...Mostly clear. Lows in the upper 30s. Highs in the upper 50s.
Sunday Night And Monday...Mostly cloudy. Lows in the mid 40s. Highs in the upper 60s.
Monday Night...Mostly cloudy. Not as cool with lows around 60.
Tuesday...Mostly sunny. Warmer with highs in the lower 80s.
Tuesday Night...Mostly cloudy with a 30 percent chance of showers. Lows in the upper 50s.
Wednesday...Partly sunny with a 30 percent chance of showers. Highs in the upper 70s.
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