Marine Weather Net

Portsmouth, NH Weather Forecast




Portsmouth, New Hampshire

 Lat: 43.07N, Lon: 70.76W

Current Conditions Updated: 455 AM EST FRI JAN 30 2026

Clear


Temp: 5°F
  • Humidity:
  • 53%
  • Winds:
  • 15 MPH W
  • Gusts:
  • 20 MPH
  • Barometer:
  • 29.89 in.
  • Dewpoint:
  • -8°F
  • Heat index:
  • 5°F

  • Sunrise:
  • 7:00 AM EST
  • Sunset:
  • 4:50 PM EST
  • Moonrise:
  • 2:05 PM EST
  • Moonset:
  • 5:35 AM EST

TONIGHT

MOSTLY CLEAR
Lo: 1°F

FRIDAY

MOSTLY SUNNY
Hi: 14°F
Lo: -1°F

SATURDAY

MOSTLY SUNNY
Hi: 20°F
Lo: 5°F

SUNDAY

MOSTLY CLOUDY
Hi: 25°F
Lo: 10°F
Weather Forecast In Detail:
Forecast Issued: 1258 AM EST Fri Jan 30 2026

COLD WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM EST FRIDAY
Rest Of Tonight...Mostly clear. Lows around 1 above. West winds around 15 mph with gusts up to 30 mph. Wind chill values as low as 18 below.
Friday...Mostly sunny. Highs around 14. West winds 15 to 20 mph with gusts up to 30 mph. Wind chill values as low as 20 below.
Friday Night...Mostly clear. Lows around 1 below. Northwest winds 10 to 15 mph with gusts up to 25 mph. Wind chill values as low as 16 below.
Saturday...Mostly sunny. Highs around 20. Northwest winds around 10 mph in the morning, becoming light and variable. Wind chill values as low as 17 below in the morning.
Saturday Night...Partly cloudy. Lows around 5 above. Light and variable winds, becoming north around 10 mph with gusts up to 20 mph after midnight. Wind chill values as low as 9 below after midnight.
Sunday...Mostly cloudy. Highs in the mid 20s.
Sunday Night...Mostly cloudy in the evening, then becoming partly cloudy. Lows around 10 above.
Monday...Partly sunny. Highs in the lower 30s.
Monday Night...Mostly clear in the evening, then becoming partly cloudy. Lows around 10 above.
Tuesday...Partly sunny. Highs in the lower 30s.
Tuesday Night...Partly cloudy in the evening, then clearing. Lows around 10 above.
Wednesday...Partly sunny. Highs in the upper 20s.
Wednesday Night...Partly cloudy. Lows around 10 above.
Thursday...Partly sunny. Highs around 30.
SHARE THIS PAGE: