Marine Weather Net

Portsmouth, NH Weather Forecast




Portsmouth, New Hampshire

 Lat: 43.07N, Lon: 70.76W

Current Conditions Updated: 455 PM EDT FRI OCT 31 2025

Overcast
Temp: 53°F
  • Humidity:
  • 55%
  • Winds:
  • 25 MPH WSW
  • Gusts:
  • 36 MPH
  • Barometer:
  • 29.14 in.
  • Dewpoint:
  • 38°F
  • Heat index:
  • 53°F

  • Sunrise:
  • 7:14 AM EDT
  • Sunset:
  • 5:36 PM EDT
  • Moonrise:
  • 3:10 PM EDT
  • Moonset:
  • 1:04 AM EDT

THIS AFTERNOON

MOSTLY CLOUDY
Hi: 61°F
Lo: 41°F

SATURDAY

MOSTLY SUNNY
Hi: 55°F
Lo: 31°F

SUNDAY

MOSTLY SUNNY
Hi: 55°F
Lo: 31°F

MONDAY

PARTLY SUNNY
Hi: 59°F
Lo: 41°F
Precip: 40%
Weather Forecast In Detail:
Forecast Issued: 144 PM EDT Fri Oct 31 2025

This Afternoon...Mostly cloudy. Highs in the lower 60s. Southwest winds 15 to 20 mph with gusts up to 35 mph.
Tonight...Partly cloudy. Lows in the lower 40s. West winds 15 to 20 mph with gusts up to 35 mph.
Saturday...Mostly sunny. Highs in the mid 50s. West winds 10 to 15 mph with gusts up to 30 mph.
Saturday Night...Mostly clear. Lows in the lower 30s. West winds around 10 mph with gusts up to 25 mph in the evening, becoming light and variable.
Sunday...Mostly sunny. Highs in the mid 50s. West winds around 10 mph.
Sunday Night...Mostly clear. Lows in the lower 30s.
Monday...Partly sunny. A chance of rain showers in the afternoon. Highs in the upper 50s. Chance of rain 40 percent.
Monday Night...Showers likely. Lows in the lower 40s. Chance of rain 70 percent.
Tuesday...Partly sunny. A chance of showers in the morning. Highs in the mid 50s. Chance of rain 50 percent.
Tuesday Night...Mostly clear. Lows in the upper 30s.
Wednesday...Partly sunny. Highs in the mid 50s.
Wednesday Night...A chance of showers in the evening, then showers likely after midnight. Lows around 40. Chance of rain 60 percent.
Thursday...Showers likely in the morning, then partly sunny with a chance of showers in the afternoon. Highs in the lower 50s. Chance of rain 60 percent.
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