PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

7:55 PM EDT OCT 25, 2026
Clear
50°F
Feels Like: 48°F
Dewpoint: 39°F
Rel. Hum.: 66%
Visibility: 10 miles
Wind: S at 5 mph
Pressure: 30.36 inches
Last 72 hours

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PORTSMOUTH, NH 03803
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TONIGHT
Mostly clear. Lows in the upper 30s. Light and variable winds.
MONDAY
Mostly sunny. Highs in the upper 60s. Light and variable winds.
MONDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 30s. Light and variable winds.
TUESDAY
Sunny. Highs in the mid 50s. Light and variable winds.
TUESDAY NIGHT
Clear. Lows in the lower 30s.
WEDNESDAY
Mostly sunny. Highs in the mid 50s.
WEDNESDAY NIGHT
Mostly clear. Lows in the upper 30s.
THURSDAY
Mostly sunny. Highs in the mid 60s.
THURSDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 40s.
FRIDAY
Mostly sunny. Highs in the upper 60s.
FRIDAY NIGHT
Mostly clear. Lows in the lower 40s.
SATURDAY
Partly sunny. Highs in the lower 60s.

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 10/25/2026
Sunday
25 OCT 2026
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 1 PM 63° 64° Clear 0%

0% Thunder
( 0% severe)
SSW   5 35% 35°
High 64° PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 4 PM 59° 58° Clear S   6 49% 40°
Clear



PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 7 PM 47° 44° Clear 0%

0% Thunder
( 0% severe)
S   6 76% 40°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 10 PM 42° 39° Clear WSW   5 86% 38°
Monday
26 OCT 2026
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 1 AM 39° 36° Partly Cloudy 0%

0% Thunder
( 0% severe)
WSW   5 89% 36°
Low 37° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 4 AM 38° 34° Clear WSW   6 85% 34°
High 69° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 7 AM 39° 34° Clear 3%

0% Thunder
( 0% severe)
W   7 85% 35°

Clear



PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 10 AM 58° 57° Clear W   7 49% 39°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 1 PM 67° 67° Clear 8%

0% Thunder
( 0% severe)
W   9 40% 42°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 4 PM 64° 64° Clear WNW   7 52% 46°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 7 PM 55° 53° Clear 0%

0% Thunder
( 0% severe)
NW   7 74% 47°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 10 PM 50° 47° Partly Cloudy NW   7 83% 45°
Tuesday
27 OCT 2026
PORTSMOUTH, NH 03803 weather forecast Day 3, 0 hours 1 AM 46° 42° Mostly Cloudy 0%

0% Thunder
( 0% severe)
NNW   7 83% 41°
Low 38° PORTSMOUTH, NH 03803 weather forecast Day 3, 3 hours 4 AM 42° 37° Partly Cloudy N   8 76% 35°
High 55° PORTSMOUTH, NH 03803 weather forecast Day 3, 6 hours 7 AM 38° 32° Clear 0%

0% Thunder
( 0% severe)
N   8 79% 32°

Clear



PORTSMOUTH, NH 03803 weather forecast Day 3, 9 hours 10 AM 49° 45° Clear NA   8 44% 28°
PORTSMOUTH, NH 03803 weather forecast Day 3, 15 hours 1 PM 53° 53° Clear 0%

0% Thunder
( 0% severe)
N   1 32% 24°
PORTSMOUTH, NH 03803 weather forecast Day 3, 18 hours 4 PM 51° 50° Clear WNW   3 36% 25°
PORTSMOUTH, NH 03803 weather forecast Day 3, 21 hours 7 PM 39° 37° Clear     NW   2 64% 28°

PORTSMOUTH, NH extended weather forecast

Wednesday
28 OCT 2026
Thursday
29 OCT 2026
Friday
30 OCT 2026
Saturday
31 OCT 2026
Sunday
1 NOV 2026
Low 31° Low 36° Low 47° Low 46° Low 40°
High 51° High 63° High 66° High 58° High 58°
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
Clear
2% Rain
Partly Cloudy
19% Rain
Partly Cloudy
26% Rain
Partly Cloudy
20% Rain
Partly Cloudy
23% Rain
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