PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

9:55 AM EDT JUL 23, 2026
Clear
72°F
Feels Like: 72°F
Dewpoint: 50°F
Rel. Hum.: 46%
Visibility: 10 miles
Wind: NW at 12 mph
Pressure: 30.04 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. Northwest winds around 10 mph, becoming southwest this afternoon.
TONIGHT
Clear. Lows in the mid 50s. Light and variable winds.
FRIDAY
Mostly sunny. Highs in the upper 70s. Light and variable winds.
FRIDAY NIGHT
Mostly clear. Lows in the upper 50s. Light and variable winds.
SATURDAY
Mostly sunny. Highs in the upper 70s. Light and variable winds, becoming southeast around 10 mph in the afternoon.
SATURDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 50s.
SUNDAY
Partly sunny. Highs in the upper 70s.
SUNDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 50s.
MONDAY
Mostly sunny. Highs in the upper 70s.
MONDAY NIGHT
Partly cloudy. Lows in the lower 60s.
TUESDAY
Partly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs around 80. Chance of rain 50 percent.
TUESDAY NIGHT
Mostly cloudy in the evening, then becoming partly cloudy. A chance of thunderstorms in the evening. A chance of showers. Lows in the lower 60s. Chance of rain 50 percent.
WEDNESDAY
Showers likely. Highs in the upper 70s. Chance of rain 60 percent.

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  7/22/2026
Thursday
23 JUL 2026
PORTSMOUTH, NH 03803 weather forecast Day 1, 0 hours 2 AM 62° 62° Partly Cloudy 0%

0% Thunder
( 0% severe)
W   6 78% 55°
Low 58° PORTSMOUTH, NH 03803 weather forecast Day 1, 3 hours 5 AM 59° 58° Partly Cloudy W   7 80% 53°
High 80° PORTSMOUTH, NH 03803 weather forecast Day 1, 6 hours 8 AM 64° 64° Clear 0%

0% Thunder
( 0% severe)
NW   7 65% 52°

Clear



PORTSMOUTH, NH 03803 weather forecast Day 1, 9 hours 11 AM 73° 73° Clear NW   7 43% 49°
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 2 PM 77° 78° Clear 0%

0% Thunder
( 1% severe)
W   6 37% 49°
PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 5 PM 77° 78° Partly Cloudy S   8 39% 50°
PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 8 PM 69° 69° Clear 0%

0% Thunder
( 1% severe)
S   5 55% 52°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 11 PM 62° 63° Clear   CALM 75% 54°
Friday
24 JUL 2026
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 2 AM 59° 60° Clear 0%

0% Thunder
( 0% severe)
  CALM 83% 54°
Low 56° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 5 AM 56° 56° Clear   CALM 93% 54°
High 81° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 8 AM 65° 65° Clear 0%

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

Clear



PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 11 AM 77° 79° Clear SE   2 47% 55°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 2 PM 79° 79° Partly Cloudy 0%

0% Thunder
( 1% severe)
SE   8 42% 54°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 5 PM 77° 78° Clear SSE   10 45% 54°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 8 PM 70° 70° Clear 0%

0% Thunder
( 1% severe)
SSE   6 59% 55°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 11 PM 64° 65° Partly Cloudy S   5 73% 55°

PORTSMOUTH, NH extended weather forecast

Saturday
25 JUL 2026
Sunday
26 JUL 2026
Monday
27 JUL 2026
Tuesday
28 JUL 2026
Wednesday
29 JUL 2026
Low 58° Low 56° Low 58° Low 61° Low 60°
High 80° High 76° High 75° High 73° High 74°
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
3% Rain
Partly Cloudy
9% Rain
Mostly Cloudy
23% Rain
Overcast
48% Rain
Overcast
66% Rain
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