PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

3:55 AM EDT SEP 7, 2026
Few Clouds
55°F
Feels Like: 55°F
Dewpoint: 50°F
Rel. Hum.: 83%
Visibility: 10 miles
Wind: Calm
Pressure: 29.97 inches
Last 72 hours

Local Area Snow Depth

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PORTSMOUTH, NH 03803
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
REST OF TONIGHT
Mostly clear. Lows in the lower 50s. Light and variable winds.
MONDAY
Sunny. Highs in the upper 70s. Northwest winds around 10 mph.
MONDAY NIGHT
Mostly clear. Lows around 60. Light and variable winds.
TUESDAY
Mostly sunny. Highs in the upper 70s. Light and variable winds.
TUESDAY NIGHT
Partly cloudy. Lows in the upper 50s. Light and variable winds.
WEDNESDAY
Mostly cloudy. Highs in the mid 70s.
WEDNESDAY NIGHT
A chance of showers in the evening, then showers likely after midnight. Lows in the mid 60s. Chance of rain 70 percent.
THURSDAY
Showers likely, mainly in the morning. Highs in the lower 80s. Chance of rain 60 percent.
THURSDAY NIGHT
Partly cloudy. A chance of showers in the evening. Lows in the upper 50s. Chance of rain 30 percent.
FRIDAY
Mostly sunny. Highs in the mid 70s.
FRIDAY NIGHT
Mostly clear. Lows in the mid 50s.
SATURDAY
Mostly sunny. Highs in the mid 70s.
SATURDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 50s.

Visible Weather Satellite
PORTSMOUTH, NH 03803
Infrared Weather Satellite
PORTSMOUTH, NH 03803
NEXRAD Weather Radar
PORTSMOUTH, NH 03803

PORTSMOUTH, NH 3 hourly weather forecast

weather forecast created  8:00 PM EDT  9/ 6/2026
Monday
7 SEP 2026
PORTSMOUTH, NH 03803 weather forecast Day 1, 0 hours 2 AM 56° 55° Partly Cloudy 1%

0% Thunder
( 0% severe)
WNW   6 83% 51°
Low 54° PORTSMOUTH, NH 03803 weather forecast Day 1, 3 hours 5 AM 55° 53° Partly Cloudy WNW   7 86% 51°
High 80° PORTSMOUTH, NH 03803 weather forecast Day 1, 6 hours 8 AM 59° 58° Clear 1%

0% Thunder
( 0% severe)
NW   8 78% 52°

Clear



PORTSMOUTH, NH 03803 weather forecast Day 1, 9 hours 11 AM 72° 72° Clear NW   9 46% 50°
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 2 PM 78° 79° Clear 1%

0% Thunder
( 1% severe)
NW   9 37% 50°
PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 5 PM 78° 79° Clear NW   9 39% 51°
PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 8 PM 68° 68° Clear 0%

0% Thunder
( 0% severe)
NW   8 54% 51°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 11 PM 62° 62° Partly Cloudy WNW   6 70% 52°
Tuesday
8 SEP 2026
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 2 AM 60° 60° Partly Cloudy 5%

0% Thunder
( 0% severe)
W   6 75% 52°
Low 59° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 5 AM 59° 58° Partly Cloudy W   8 78% 52°
High 80° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 8 AM 63° 63° Partly Cloudy 0%

0% Thunder
( 2% severe)
WNW   8 70% 53°

Partly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 11 AM 74° 74° Partly Cloudy WNW   9 51% 55°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 2 PM 79° 79° Partly Cloudy 0%

0% Thunder
( 2% severe)
NW   8 41% 53°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 5 PM 77° 78° Partly Cloudy NW   8 43% 53°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 8 PM 66° 66° Partly Cloudy 0%

0% Thunder
( 1% severe)
WSW   5 65% 54°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 11 PM 61° 62° Partly Cloudy NNW   1 78% 54°

PORTSMOUTH, NH extended weather forecast

BAD DAY
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Low 57° Low 57° Low 63° Low 61° Low 54°
High 77° High 71° High 85° High 76° High 76°
PORTSMOUTH, NH 03803 weather forecast Day 3 PORTSMOUTH, NH 03803 weather forecast Day 4 PORTSMOUTH, NH 03803 weather forecast Day 5 PORTSMOUTH, NH 03803 weather forecast Day 6 PORTSMOUTH, NH 03803 weather forecast Day 7
Partly Cloudy
1% Rain
Overcast
34% Rain
Overcast
61% Rain
Partly Cloudy
23% Rain
Partly Cloudy
19% Rain
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