PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

10:55 AM EDT JUL 24, 2026
Few Clouds
79°F
Feels Like: 80°F
Dewpoint: 57°F
Rel. Hum.: 47%
Visibility: 10 miles
Wind: SW at 5 mph
Pressure: 30.22 inches
Last 72 hours

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PORTSMOUTH, NH 03803
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TODAY
Sunny. Highs around 80. Light and variable winds, becoming southeast around 10 mph this afternoon.
TONIGHT
Mostly clear. Lows in the upper 50s. Light and variable winds.
SATURDAY
Mostly sunny. Highs in the upper 70s. Light and variable winds.
SATURDAY NIGHT
Mostly clear. Lows in the mid 50s. Light and variable winds.
SUNDAY
Partly sunny. Highs in the mid 70s. Light and variable winds, becoming east around 10 mph in the afternoon.
SUNDAY NIGHT
Partly cloudy. Lows in the upper 50s.
MONDAY
Mostly sunny. Highs in the upper 70s.
MONDAY NIGHT
Partly cloudy. Lows around 60.
TUESDAY
Partly sunny with a chance of showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 60 percent.
TUESDAY NIGHT
A chance of thunderstorms in the evening. Showers likely. Lows in the lower 60s. Chance of rain 60 percent.
WEDNESDAY
A chance of showers in the morning, then showers likely in the afternoon. Highs in the upper 70s. Chance of rain 60 percent.
WEDNESDAY NIGHT
Partly cloudy. A chance of showers in the evening. Lows in the lower 60s. Chance of rain 50 percent.
THURSDAY
Partly sunny. Highs in the upper 70s.

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  7/23/2026
Friday
24 JUL 2026
PORTSMOUTH, NH 03803 weather forecast Day 1, 0 hours 2 AM 59° 60° Clear 0%

0% Thunder
( 0% severe)
  CALM 87% 55°
Low 55° PORTSMOUTH, NH 03803 weather forecast Day 1, 3 hours 5 AM 56° 56° Clear   CALM 90% 53°
High 82° PORTSMOUTH, NH 03803 weather forecast Day 1, 6 hours 8 AM 65° 65° Clear 0%

0% Thunder
( 0% severe)
  CALM 70% 55°

Clear



PORTSMOUTH, NH 03803 weather forecast Day 1, 9 hours 11 AM 77° 78° Clear SSE   3 45% 54°
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 2 PM 79° 79° Clear 0%

0% Thunder
( 1% severe)
SE   8 42% 54°
PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 5 PM 77° 78° Clear SSE   12 45% 54°
PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 8 PM 70° 70° Clear 0%

0% Thunder
( 1% severe)
SSE   8 59% 55°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 11 PM 64° 64° Clear S   6 75% 56°
Saturday
25 JUL 2026
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 2 AM 61° 62° Partly Cloudy 0%

0% Thunder
( 0% severe)
  CALM 84% 56°
Low 58° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 5 AM 58° 59° Clear   CALM 90% 55°
High 80° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 8 AM 65° 65° Clear 0%

0% Thunder
( 0% severe)
  CALM 75% 57°

Clear



PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 11 AM 76° 78° Clear SE   6 52% 57°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 2 PM 77° 79° Partly Cloudy 0%

0% Thunder
( 1% severe)
SE   10 47% 55°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 5 PM 75° 75° Clear SE   10 46% 53°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 8 PM 68° 68° Clear 0%

0% Thunder
( 1% severe)
SE   5 61% 54°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 11 PM 61° 62° Partly Cloudy   CALM 81% 55°

PORTSMOUTH, NH extended weather forecast

Sunday
26 JUL 2026
Monday
27 JUL 2026
Tuesday
28 JUL 2026
Wednesday
29 JUL 2026
Thursday
30 JUL 2026
Low 56° Low 60° Low 63° Low 64° Low 63°
High 74° High 76° High 74° High 77° High 77°
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
Partly Cloudy
10% Rain
Overcast
19% Rain
Overcast
59% Rain
Overcast
66% Rain
Overcast
69% Rain
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