Marine Weather Net

Portsmouth, NH Weather Forecast




Portsmouth, New Hampshire

 Lat: 43.07N, Lon: 70.76W

Current Conditions Updated: 955 AM EDT TUE JUN 2 2026

Mostly Cloudy
Temp: 66°F
  • Humidity:
  • 55%
  • Winds:
  • 5 MPH SW
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.11 in.
  • Dewpoint:
  • 50°F
  • Heat index:
  • 66°F

  • Sunrise:
  • 5:04 AM EDT
  • Sunset:
  • 8:15 PM EDT
  • Moonrise:
  • 10:46 PM EDT
  • Moonset:
  • 6:21 AM EDT

TODAY

PARTLY SUNNY
Hi: 75°F
Lo: 51°F

WEDNESDAY

MOSTLY SUNNY
Hi: 75°F
Lo: 55°F

THURSDAY

MOSTLY SUNNY
Hi: 81°F
Lo: 60°F

FRIDAY

PARTLY SUNNY
Hi: 85°F
Lo: 61°F
Weather Forecast In Detail:
Forecast Issued: 801 AM EDT Tue Jun 02 2026

Today...Partly sunny. Highs in the mid 70s. Light and variable winds.
Tonight...Partly cloudy in the evening, then clearing. Lows in the lower 50s. Light and variable winds.
Wednesday...Mostly sunny. Highs in the mid 70s. Light and variable winds.
Wednesday Night...Clear. Lows in the mid 50s. Light and variable winds.
Thursday...Mostly sunny. Highs in the lower 80s. Light and variable winds, becoming south around 10 mph in the afternoon.
Thursday Night...Mostly clear in the evening, then becoming partly cloudy. Lows around 60.
Friday...Partly sunny. Warm with highs in the mid 80s.
Friday Night...Partly cloudy. Lows in the lower 60s.
Saturday...Partly sunny in the morning, then mostly cloudy with a chance of showers in the afternoon. Highs around 80. Chance of rain 40 percent.
Saturday Night...Mostly cloudy with a chance of showers. Lows in the mid 50s. Chance of rain 40 percent.
Sunday...Mostly cloudy with a 30 percent chance of showers. Highs in the upper 60s.
Sunday Night...Partly cloudy with a 30 percent chance of showers. Lows in the lower 50s.
Monday...Partly sunny. Highs in the upper 60s.
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