Marine Weather Net

Portsmouth, NH Weather Forecast




Portsmouth, New Hampshire

 Lat: 43.07N, Lon: 70.76W

Current Conditions Updated: 255 PM EDT TUE MAY 12 2026

Partly Cloudy
Temp: 62°F
  • Humidity:
  • 24%
  • Winds:
  • 15 MPH WNW
  • Gusts:
  • 23 MPH
  • Barometer:
  • 30.03 in.
  • Dewpoint:
  • 26°F
  • Heat index:
  • 62°F

  • Sunrise:
  • 5:21 AM EDT
  • Sunset:
  • 7:55 PM EDT
  • Moonrise:
  • 2:56 AM EDT
  • Moonset:
  • 3:37 PM EDT

THIS AFTERNOON

PARTLY SUNNY
Hi: 60°F
Lo: 41°F

WEDNESDAY

CHANCE OF SHOWERS
Hi: 60°F
Lo: 47°F
Precip: 40%

THURSDAY

RAIN
Hi: 59°F
Lo: 45°F
Precip: 100%

FRIDAY

SHOWERS
Hi: 55°F
Lo: 45°F
Precip: 90%
Weather Forecast In Detail:
Forecast Issued: 238 PM EDT Tue May 12 2026

This Afternoon...Partly sunny. Highs around 60. West winds around 10 mph with gusts up to 20 mph.
Tonight...Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 40s. West winds around 10 mph in the evening, becoming light and variable.
Wednesday...Cloudy with a 40 percent chance of showers. Highs around 60. Light and variable winds, becoming south around 10 mph with gusts up to 25 mph in the afternoon.
Wednesday Night...Cloudy. A chance of rain after midnight. Lows in the upper 40s. South winds around 10 mph. Gusts up to 25 mph in the evening. Chance of rain 30 percent.
Thursday...Rain. Highs in the upper 50s. Southeast winds around 10 mph with gusts up to 20 mph. Chance of rain near 100 percent.
Thursday Night...Rain. Lows in the mid 40s. Chance of rain near 100 percent.
Friday...Rain in the morning, then showers in the afternoon. Highs in the mid 50s. Chance of rain 90 percent.
Friday Night...Partly cloudy. A chance of showers in the evening. Lows in the mid 40s. Chance of rain 40 percent.
Saturday...Partly sunny. Highs in the lower 70s.
Saturday Night...Mostly clear. Lows in the mid 50s.
Sunday...Mostly sunny. Highs in the mid 70s.
Sunday Night...Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 50s.
Monday...Partly sunny. Highs in the upper 60s.
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