PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

12:55 PM EDT JUL 25, 2026
Few Clouds
79°F
Feels Like: 79°F
Dewpoint: 50°F
Rel. Hum.: 36%
Visibility: 10 miles
Wind: ESE at 9 mph
Pressure: 30.12 inches
Last 72 hours

Local Area Snow Depth

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PORTSMOUTH, NH 03803
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TODAY
Sunny. Highs in the upper 70s. Light and variable winds, becoming southeast around 10 mph this afternoon.
TONIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 50s. Light and variable winds.
SUNDAY
Partly sunny. Highs in the mid 70s. Light and variable winds.
SUNDAY NIGHT
Mostly clear. Lows in the mid 50s. Light and variable winds.
MONDAY
Mostly sunny. Highs in the upper 70s. Light and variable winds.
MONDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 50s.
TUESDAY
Partly sunny in the morning, then mostly cloudy with a chance of showers in the afternoon. Highs in the upper 70s. Chance of rain 50 percent.
TUESDAY NIGHT
Showers likely. Lows in the lower 60s. Chance of rain 70 percent.
WEDNESDAY
Showers likely. A chance of thunderstorms in the afternoon. Highs in the mid 70s. Chance of rain 70 percent.
WEDNESDAY NIGHT
Becoming partly cloudy after midnight. A chance of thunderstorms. Showers likely, mainly in the evening. Lows in the lower 60s. Chance of rain 60 percent.
THURSDAY
Partly sunny with a 40 percent chance of showers. Highs in the upper 70s.
THURSDAY NIGHT
Partly cloudy. A chance of showers in the evening. Lows in the lower 60s. Chance of rain 40 percent.
FRIDAY
Partly sunny. Highs around 80.

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  7/25/2026
Saturday
25 JUL 2026
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 2 PM 77° 79° Clear 0%

0% Thunder
( 1% severe)
SE   10 47% 55°
High 78° PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 5 PM 74° 74° Clear SE   9 48% 53°
Clear



PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 8 PM 67° 67° Clear 0%

0% Thunder
( 1% severe)
SE   5 61% 53°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 11 PM 59° 60° Partly Cloudy   CALM 90% 56°
Sunday
26 JUL 2026
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 2 AM 57° 58° Mostly Cloudy 0%

0% Thunder
( 0% severe)
  CALM 96% 56°
Low 54° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 5 AM 54° 54° Mostly Cloudy   CALM 100% 54°
High 76° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 8 AM 62° 63° Mostly Cloudy 0%

0% Thunder
( 0% severe)
  CALM 78% 55°

Partly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 11 AM 73° 73° Partly Cloudy ESE   7 51% 54°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 2 PM 74° 74° Partly Cloudy 0%

0% Thunder
( 1% severe)
ESE   8 46% 52°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 5 PM 72° 72° Partly Cloudy ESE   7 46% 50°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 8 PM 65° 65° Clear 0%

0% Thunder
( 1% severe)
  CALM 63% 52°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 11 PM 58° 59° Partly Cloudy   CALM 87% 54°
Monday
27 JUL 2026
PORTSMOUTH, NH 03803 weather forecast Day 3, 0 hours 2 AM 56° 56° Mostly Cloudy 1%

0% Thunder
( 0% severe)
  CALM 93% 54°
Low 54° PORTSMOUTH, NH 03803 weather forecast Day 3, 3 hours 5 AM 54° 54° Mostly Cloudy   CALM 93% 52°
High 79° PORTSMOUTH, NH 03803 weather forecast Day 3, 6 hours 8 AM 62° 63° Partly Cloudy 1%

0% Thunder
( 0% severe)
  CALM 75% 54°

Partly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 3, 9 hours 11 AM 75° 75° Partly Cloudy SE   3 48% 54°
PORTSMOUTH, NH 03803 weather forecast Day 3, 15 hours 2 PM 77° 79° Partly Cloudy 2%

0% Thunder
( 2% severe)
SE   9 47% 55°
PORTSMOUTH, NH 03803 weather forecast Day 3, 18 hours 5 PM 75° 75° Partly Cloudy SE   9 50% 55°
PORTSMOUTH, NH 03803 weather forecast Day 3, 21 hours 8 PM 68° 68° Partly Cloudy     SE   6 68% 57°

PORTSMOUTH, NH extended weather forecast

Tuesday
28 JUL 2026
Wednesday
29 JUL 2026
Thursday
30 JUL 2026
Friday
31 JUL 2026
Saturday
1 AUG 2026
Low 60° Low 62° Low 60° Low 61° Low 63°
High 78° High 78° High 74° High 78° High 83°
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
21% Rain
Overcast
28% Rain
Overcast
39% Rain
Mostly Cloudy
35% Rain
Partly Cloudy
36% Rain
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