PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

1:55 PM EDT JUL 6, 2026
Overcast
77°F
Feels Like: 78°F
Dewpoint: 54°F
Rel. Hum.: 45%
Visibility: 10 miles
Wind: SE at 8 mph
Pressure: 30.18 inches
Last 72 hours

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PORTSMOUTH, NH 03803
Weather Forecast

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Snow Depth pages
THIS AFTERNOON
Mostly cloudy. Highs in the mid 70s. Light and variable winds.
TONIGHT
Cloudy. A slight chance of showers in the evening, then rain likely after midnight. Patchy fog after midnight. Lows in the upper 50s. Light and variable winds. Chance of rain 70 percent.
TUESDAY
Rain. Highs in the upper 60s. Northeast winds around 10 mph with gusts up to 25 mph. Chance of rain 90 percent.
TUESDAY NIGHT
Cloudy. Rain likely in the evening, then a chance of showers after midnight. Patchy fog after midnight. Lows in the upper 50s. Northeast winds around 10 mph with gusts up to 20 mph in the evening, becoming light and variable. Chance of rain 70 percent.
WEDNESDAY
Patchy fog in the morning. Partly sunny. Highs in the upper 70s. Light and variable winds.
WEDNESDAY NIGHT
Mostly clear. Lows in the lower 60s.
THURSDAY
Mostly sunny. Hot with highs around 90.
THURSDAY NIGHT
Partly cloudy. Lows in the upper 60s.
FRIDAY
Partly sunny. A chance of showers in the afternoon. Hot with highs around 90. Chance of rain 50 percent.
FRIDAY NIGHT
Partly cloudy. A chance of showers in the evening. Lows in the mid 60s. Chance of rain 50 percent.
SATURDAY
Mostly sunny. Highs in the mid 80s.
SATURDAY NIGHT
Mostly clear. Lows in the lower 60s.
SUNDAY
Mostly sunny. Warm with highs in the mid 80s.

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 AM EDT  7/ 6/2026
Monday
6 JUL 2026
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 2 PM 75° 75° Mostly Cloudy 3%

0% Thunder
( 1% severe)
ESE   7 55% 58°
High 76° PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 5 PM 73° 73° Mostly Cloudy ESE   7 59% 58°
Mostly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 8 PM 68° 68° Mostly Cloudy 12%
RAIN
<.01 in
0% Thunder
( 2% severe)
ESE   5 73% 59°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 11 PM 64° 66° Mostly Cloudy E   2 90% 61°
Tuesday
7 JUL 2026
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 2 AM 63° 64° Mostly Cloudy 58%
RAIN
.25–.5 in
0% Thunder
( 5% severe)
E   2 93% 61°
Low 61° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 5 AM 62° 62° Mostly Cloudy E   7 97% 61°
High 71° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 8 AM 64° 64° Mostly Cloudy 62%
RAIN
.25–.5 in
0% Thunder
( 6% severe)
ENE   9 90% 61°

Mostly Cloudy

Rain Likely

PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 11 AM 68° 68° Mostly Cloudy ENE   12 78% 61°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 2 PM 69° 69° Mostly Cloudy 51%
RAIN
.1–.25 in
0% Thunder
( 6% severe)
ENE   13 76% 61°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 5 PM 68° 68° Mostly Cloudy ENE   12 78% 61°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 8 PM 66° 66° Mostly Cloudy 23%
RAIN
.01–.1 in
0% Thunder
( 6% severe)
NE   8 84% 61°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 11 PM 62° 62° Mostly Cloudy NNE   7 97% 61°
Wednesday
8 JUL 2026
PORTSMOUTH, NH 03803 weather forecast Day 3, 0 hours 2 AM 60° 59° Mostly Cloudy 10%
RAIN
<.01 in
0% Thunder
( 2% severe)
N   7 100% 60°
Low 58° PORTSMOUTH, NH 03803 weather forecast Day 3, 3 hours 5 AM 58° 57° Mostly Cloudy NA   6 100% 58°
High 80° PORTSMOUTH, NH 03803 weather forecast Day 3, 6 hours 8 AM 64° 65° Mostly Cloudy 5%

0% Thunder
( 1% severe)
N   5 84% 59°

Decreasing Clouds



PORTSMOUTH, NH 03803 weather forecast Day 3, 9 hours 11 AM 73° 73° Partly Cloudy NE   5 62% 59°
PORTSMOUTH, NH 03803 weather forecast Day 3, 15 hours 2 PM 77° 79° Clear 1%

0% Thunder
( 3% severe)
ESE   7 56% 60°
PORTSMOUTH, NH 03803 weather forecast Day 3, 18 hours 5 PM 77° 79° Clear SSE   8 58% 61°
PORTSMOUTH, NH 03803 weather forecast Day 3, 21 hours 8 PM 71° 71° Clear     S   6 71% 61°

PORTSMOUTH, NH extended weather forecast

Thursday
9 JUL 2026
Friday
10 JUL 2026
Saturday
11 JUL 2026
Sunday
12 JUL 2026
Monday
13 JUL 2026
Low 63° Low 68° Low 62° Low 60° Low 63°
High 91° High 83° High 82° High 81° High 80°
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
7% Rain
Mostly Cloudy
68% Rain
Mostly Cloudy
28% Rain
Mostly Cloudy
14% Rain
Mostly Cloudy
39% Rain
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