PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

12:55 PM EDT OCT 31, 2026
Clear
52°F
Feels Like: 48°F
Dewpoint: 21°F
Rel. Hum.: 29%
Visibility: 10 miles
Wind: NW at 12 mph
Pressure: 30.33 inches
Last 72 hours

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PORTSMOUTH, NH 03803
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
REST OF TODAY
Mostly sunny. Highs in the lower 50s. Northwest winds around 10 mph.
TONIGHT
Mostly clear. Lows in the upper 20s. Light and variable winds.
SUNDAY
Sunny. Highs in the upper 50s. Light and variable winds.
SUNDAY NIGHT
Mostly clear. Lows in the lower 40s. Light and variable winds.
MONDAY
Mostly sunny. Highs in the upper 60s. Light and variable winds, becoming west around 10 mph in the afternoon.
MONDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 40s.
TUESDAY
Partly sunny. Highs in the mid 60s.
TUESDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 40s.
WEDNESDAY
Partly sunny. Highs in the mid 60s.
WEDNESDAY NIGHT
Partly cloudy. Lows in the upper 40s.
THURSDAY
Mostly cloudy. A chance of showers in the afternoon. Highs in the mid 60s. Chance of rain 30 percent.
THURSDAY NIGHT
Mostly cloudy with a 50 percent chance of showers. Lows in the lower 50s.
FRIDAY
Showers likely. Highs in the mid 60s. Chance of rain 60 percent.

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  7:00 AM EST 10/31/2026
Saturday
31 OCT 2026
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 1 PM 51° 48° Clear 0%

0% Thunder
( 0% severe)
NW   8 31% 22°
High 52° PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 4 PM 48° 44° Partly Cloudy WNW   8 36% 23°
Clear



PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 7 PM 39° 34° Clear 0%

0% Thunder
( 0% severe)
WNW   7 59% 26°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 10 PM 34° 30° Clear NW   5 78% 28°
Sunday
1 NOV 2026
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 1 AM 31° 28° Clear 0%

0% Thunder
( 0% severe)
WNW   3 81% 26°
Low 27° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 4 AM 29° 24° Clear W   5 92% 27°
High 60° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 7 AM 29° 23° Clear 0%

0% Thunder
( 0% severe)
W   6 96% 28°

Clear



PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 10 AM 48° 44° Clear W   8 49% 30°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 1 PM 56° 54° Clear 0%

0% Thunder
( 0% severe)
W   9 35% 29°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 4 PM 54° 52° Clear WSW   7 45% 33°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 7 PM 45° 41° Clear 0%

0% Thunder
( 0% severe)
WSW   7 68% 35°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 10 PM 42° 38° Clear WSW   7 82% 37°
Monday
2 NOV 2026
PORTSMOUTH, NH 03803 weather forecast Day 3, 0 hours 1 AM 41° 37° Clear 0%

0% Thunder
( 0% severe)
WSW   6 79% 35°
Low 39° PORTSMOUTH, NH 03803 weather forecast Day 3, 3 hours 4 AM 41° 36° Clear WSW   7 82% 36°
High 70° PORTSMOUTH, NH 03803 weather forecast Day 3, 6 hours 7 AM 41° 36° Clear 0%

0% Thunder
( 0% severe)
WSW   7 82% 36°

Partly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 3, 9 hours 10 AM 58° 56° Partly Cloudy WSW   8 49% 39°
PORTSMOUTH, NH 03803 weather forecast Day 3, 15 hours 1 PM 67° 67° Partly Cloudy 0%

0% Thunder
( 0% severe)
WSW   9 37% 40°
PORTSMOUTH, NH 03803 weather forecast Day 3, 18 hours 4 PM 63° 63° Partly Cloudy WSW   7 48% 43°
PORTSMOUTH, NH 03803 weather forecast Day 3, 21 hours 7 PM 55° 54° Partly Cloudy     WSW   6 69% 45°

PORTSMOUTH, NH extended weather forecast

Tuesday
3 NOV 2026
Wednesday
4 NOV 2026
Thursday
5 NOV 2026
Friday
6 NOV 2026
Saturday
7 NOV 2026
Low 42° Low 47° Low 50° Low 50° Low 42°
High 65° High 69° High 65° High 58° High 56°
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 <!--SEARCHED_TOWN_NAME--> weather forecast Day 8
Partly Cloudy
8% Rain
Partly Cloudy
29% Rain
Overcast
44% Rain
Overcast
37% Rain
Overcast
36% Rain
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