Marine Weather Net

Winthrop, MA Weather Forecast


Marine Forecast: Boston Harbor


Winthrop, Massachusetts

 Lat: 42.38N, Lon: 70.98W

Current Conditions Updated: 1154 PM EDT SUN MAY 24 2026

Fair
Temp: 53°F
  • Humidity:
  • 96%
  • Winds:
  • 13 MPH ENE
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.24 in.
  • Dewpoint:
  • 52°F
  • Heat index:
  • 53°F

  • Sunrise:
  • 5:12 AM EDT
  • Sunset:
  • 8:07 PM EDT
  • Moonrise:
  • 2:46 PM EDT
  • Moonset:
  • 2:13 AM EDT

TONIGHT

SHOWERS
Lo: 51°F
Precip: 80%

MEMORIAL DAY

SHOWERS
Hi: 71°F
Lo: 59°F
Precip: 70%

TUESDAY

MOSTLY SUNNY
Hi: 81°F
Lo: 61°F

WEDNESDAY

PARTLY SUNNY
Hi: 85°F
Lo: 51°F
Precip: 30%
Weather Forecast In Detail:
Forecast Issued: 1004 PM EDT Sun May 24 2026

Overnight...Cloudy. Showers this evening. Patchy fog. Lows in the lower 50s. East winds 5 to 10 mph. Chance of rain 80 percent.
Memorial Day...Cloudy. Showers likely, mainly in the morning. Patchy fog. Not as cool with highs in the lower 70s. South winds around 5 mph, becoming west with gusts up to 20 mph in the afternoon. Chance of rain 70 percent.
Monday Night...Mostly cloudy. Lows in the upper 50s. West winds around 5 mph.
Tuesday...Mostly sunny. Warmer with highs in the lower 80s. West winds around 5 mph, becoming south in the afternoon.
Tuesday Night...Mostly clear. Lows in the lower 60s. Southwest winds 5 to 10 mph.
Wednesday...Partly sunny with a 30 percent chance of showers. Highs in the mid 80s.
Wednesday Night And Thursday...Partly cloudy. Lows in the upper 50s. Highs around 70.
Thursday Night...Partly cloudy. Lows in the lower 50s.
Friday...Partly cloudy with a 30 percent chance of showers. Highs in the upper 60s. Lows in the lower 50s.
Saturday...Partly cloudy with a 30 percent chance of showers. Highs in the upper 60s. Lows in the lower 50s.
Saturday Night And Sunday...Partly cloudy. Lows in the lower 50s. Highs in the upper 60s.
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