Marine Weather Net

Portsmouth, RI Weather Forecast


Marine Forecast: Narragansett Bay


Portsmouth, Rhode Island

 Lat: 41.60N, Lon: 71.25W

Current Conditions Updated: 635 PM EDT SAT APR 4 2026

Overcast
Temp: 42°F
  • Humidity:
  • 81%
  • Winds:
  • 17 MPH NE
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.34 in.
  • Dewpoint:
  • 37°F
  • Heat index:
  • 42°F

  • Sunrise:
  • 6:21 AM EDT
  • Sunset:
  • 7:12 PM EDT
  • Moonrise:
  • 10:19 PM EDT
  • Moonset:
  • 7:10 AM EDT

TONIGHT

ISOLATED SHOWERS
Lo: 40°F
Precip: 20%

SUNDAY

CHANCE OF T-STORM
Hi: 50°F
Lo: 39°F
Precip: 90%

MONDAY

MOSTLY SUNNY
Hi: 51°F
Lo: 35°F

TUESDAY

PARTLY SUNNY
Hi: 49°F
Lo: 29°F
Precip: 40%
Weather Forecast In Detail:
Forecast Issued: 402 PM EDT Sat Apr 04 2026

Tonight...Cloudy. Patchy drizzle this evening, then isolated showers with patchy drizzle after midnight. Cooler. Near steady temperature around 40. East winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent.
Sunday...Cloudy. A slight chance of showers with patchy drizzle in the morning, then showers with isolated thunderstorms in the afternoon. Cooler with highs around 50. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 90 percent.
Sunday Night...Mostly cloudy. Showers in the evening. Lows in the upper 30s. West winds around 10 mph, becoming northwest after midnight. Gusts up to 25 mph. Chance of rain 80 percent.
Monday...Mostly sunny. Highs in the lower 50s. West winds 10 to 15 mph with gusts up to 25 mph.
Monday Night...Partly cloudy. Lows in the mid 30s. West winds 5 to 10 mph.
Tuesday...Partly sunny with a 40 percent chance of rain showers. Highs in the upper 40s.
Tuesday Night...Mostly clear. Lows in the upper 20s.
Wednesday...Sunny. Highs in the mid 40s.
Wednesday Night...Mostly clear. Lows in the lower 30s.
Thursday And Thursday Night...Partly cloudy. Highs around 50. Lows in the lower 40s.
Friday...Partly cloudy. Highs in the mid 50s. Lows in the lower 40s.
Saturday...Partly cloudy. Highs in the mid 50s. Lows in the lower 40s.
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