PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

7:55 PM EDT OCT 28, 2026
Broken Clouds
46°F
Feels Like: 43°F
Dewpoint: 39°F
Rel. Hum.: 76%
Visibility: 10 miles
Wind: S at 5 mph
Pressure: 30.37 inches
Last 72 hours

Local Area Snow Depth

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PORTSMOUTH, NH 03803
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TONIGHT
Mostly clear. Lows around 40. Light and variable winds.
THURSDAY
Sunny. Highs in the upper 60s. Southwest winds around 10 mph.
THURSDAY NIGHT
Clear in the evening, then becoming partly cloudy. Lows in the lower 50s. Southwest winds around 10 mph.
FRIDAY
Mostly sunny. Highs in the mid 60s. West winds around 10 mph with gusts up to 25 mph.
FRIDAY NIGHT
Mostly clear. Lows in the mid 30s. Northwest winds around 10 mph.
SATURDAY
Sunny. Highs in the mid 50s.
SATURDAY NIGHT
Clear. Lows in the upper 20s.
SUNDAY
Mostly sunny. Highs in the upper 50s.
SUNDAY NIGHT
Mostly clear. Lows in the upper 30s.
MONDAY
Partly sunny. Highs in the lower 60s.
MONDAY NIGHT
Partly cloudy. Lows in the lower 40s.
TUESDAY
Partly sunny. Highs in the upper 50s.
TUESDAY NIGHT
Partly cloudy. Lows in the lower 40s.

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 10/28/2026
Wednesday
28 OCT 2026
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 1 PM 51° 51° Mostly Cloudy 1%

0% Thunder
( 0% severe)
S   1 48% 32°
High 52° PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 4 PM 50° 48° Mostly Cloudy S   5 58% 36°
Decreasing Clouds



PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 7 PM 42° 40° Partly Cloudy 3%

0% Thunder
( 0% severe)
S   3 89% 39°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 10 PM 40° 37° Clear SW   5 100% 40°
Thursday
29 OCT 2026
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 1 AM 40° 36° Partly Cloudy 2%

0% Thunder
( 0% severe)
SW   6 96% 39°
Low 39° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 4 AM 41° 36° Partly Cloudy SW   7 100% 41°
High 68° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 7 AM 42° 38° Clear 2%

0% Thunder
( 0% severe)
SW   7 100% 42°

Clear



PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 10 AM 58° 56° Clear SW   9 69% 48°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 1 PM 66° 66° Clear 1%

0% Thunder
( 0% severe)
SW   12 54% 49°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 4 PM 64° 63° Clear SW   10 60% 50°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 7 PM 57° 55° Clear 0%

0% Thunder
( 1% severe)
SW   10 77% 50°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 10 PM 55° 52° Partly Cloudy SW   9 83% 50°
Friday
30 OCT 2026
PORTSMOUTH, NH 03803 weather forecast Day 3, 0 hours 1 AM 55° 52° Mostly Cloudy 3%

0% Thunder
( 3% severe)
SW   9 83% 50°
Low 54° PORTSMOUTH, NH 03803 weather forecast Day 3, 3 hours 4 AM 55° 52° Mostly Cloudy WSW   9 83% 50°
High 68° PORTSMOUTH, NH 03803 weather forecast Day 3, 6 hours 7 AM 55° 53° Clear 0%

0% Thunder
( 0% severe)
WSW   8 86% 51°

Clear



PORTSMOUTH, NH 03803 weather forecast Day 3, 9 hours 10 AM 64° 63° Clear W   12 58% 49°
PORTSMOUTH, NH 03803 weather forecast Day 3, 15 hours 1 PM 66° 66° Clear 0%

0% Thunder
( 0% severe)
WNW   15 40% 41°
PORTSMOUTH, NH 03803 weather forecast Day 3, 18 hours 4 PM 60° 58° Clear WNW   14 46% 39°
PORTSMOUTH, NH 03803 weather forecast Day 3, 21 hours 7 PM 50° 46° Clear     NW   9 63% 38°

PORTSMOUTH, NH extended weather forecast

Saturday
31 OCT 2026
Sunday
1 NOV 2026
Monday
2 NOV 2026
Tuesday
3 NOV 2026
Wednesday
4 NOV 2026
Low 40° Low 33° Low 39° Low 41° Low 34°
High 52° High 57° High 60° High 51° High 52°
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
Clear
7% Rain
Mostly Cloudy
26% Rain
Mostly Cloudy
47% Rain
Partly Cloudy
19% Rain
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