PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

10:55 AM EDT JUL 8, 2026
Scattered Clouds
72°F
Feels Like: 72°F
Dewpoint: 63°F
Rel. Hum.: 73%
Visibility: 10 miles
Wind: W at 5 mph
Pressure: 30.01 inches
Last 72 hours

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PORTSMOUTH, NH 03803
Weather Forecast

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Snow Depth pages
TODAY
Mostly sunny. Highs in the upper 70s. Light and variable winds.
TONIGHT
Mostly clear. Lows in the mid 60s. Light and variable winds.
THURSDAY
Mostly sunny. Hot with highs around 90. Light and variable winds, becoming southwest around 10 mph in the afternoon.
THURSDAY NIGHT
Partly cloudy. Humid with lows in the upper 60s. Light and variable winds. Heat index values in the lower 90s early in the evening.
FRIDAY
Partly sunny. Showers likely with scattered thunderstorms in the afternoon. Warm with highs in the upper 80s. Light and variable winds. Chance of rain 60 percent. Heat index values in the mid 90s.
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
Sunny. Highs in the mid 80s.
SUNDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 60s.
MONDAY
Mostly sunny. Warm with highs in the upper 80s.
MONDAY NIGHT
Partly cloudy. Lows in the upper 60s.
TUESDAY
Mostly sunny. Warm with highs in the upper 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 PM EDT  7/ 7/2026
Wednesday
8 JUL 2026
PORTSMOUTH, NH 03803 weather forecast Day 1, 0 hours 2 AM 61° 61° Mostly Cloudy 5%

0% Thunder
( 0% severe)
NNE   6 100% 61°
Low 58° PORTSMOUTH, NH 03803 weather forecast Day 1, 3 hours 5 AM 59° 58° Partly Cloudy N   6 100% 59°
High 82° PORTSMOUTH, NH 03803 weather forecast Day 1, 6 hours 8 AM 65° 65° Partly Cloudy 0%

0% Thunder
( 0% severe)
NA   3 87% 61°

Partly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 1, 9 hours 11 AM 76° 78° Partly Cloudy ENE   3 60% 61°
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 2 PM 80° 81° Clear 0%

0% Thunder
( 2% severe)
SE   7 52% 61°
PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 5 PM 79° 80° Partly Cloudy SSE   8 56% 62°
PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 8 PM 73° 73° Clear 0%

0% Thunder
( 2% severe)
S   7 71% 63°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 11 PM 68° 68° Clear SSW   6 84% 63°
Thursday
9 JUL 2026
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 2 AM 66° 66° Partly Cloudy 0%

0% Thunder
( 0% severe)
WSW   6 90% 63°
Low 65° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 5 AM 65° 65° Partly Cloudy WSW   6 93% 63°
High 93° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 8 AM 73° 73° Partly Cloudy 0%

0% Thunder
( 3% severe)
W   6 76% 65°

Partly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 11 AM 87° 90° Partly Cloudy WSW   7 53% 68°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 2 PM 92° 96° Partly Cloudy 5%

0% Thunder
( 19% severe)
SW   9 44% 67°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 5 PM 91° 96° Partly Cloudy SW   10 49% 69°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 8 PM 84° 89° Mostly Cloudy 10%
RAIN
<.01 in
0% Thunder
( 17% severe)
SW   8 65% 71°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 11 PM 76° 77° Partly Cloudy SW   8 85% 71°

PORTSMOUTH, NH extended weather forecast

Friday
10 JUL 2026
Saturday
11 JUL 2026
Sunday
12 JUL 2026
Monday
13 JUL 2026
Tuesday
14 JUL 2026
Low 69° Low 64° Low 60° Low 59° Low 65°
High 81° High 78° High 78° High 82° High 88°
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
Mostly Cloudy
61% Rain
Partly Cloudy
38% Rain
Partly Cloudy
10% Rain
Clear
15% Rain
Partly Cloudy
21% Rain
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