PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

12:55 PM EDT JUL 26, 2026
Scattered Clouds
73°F
Feels Like: 73°F
Dewpoint: 48°F
Rel. Hum.: 41%
Visibility: 10 miles
Wind: E at 12 mph
Pressure: 29.92 inches
Last 72 hours

Local Area Snow Depth

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PORTSMOUTH, NH 03803
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TODAY
Partly sunny. Highs in the mid 70s. Light and variable winds.
TONIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 50s. Light and variable winds.
MONDAY
Mostly sunny. Highs in the mid 70s. Light and variable winds.
MONDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 50s. Light and variable winds.
TUESDAY
Partly sunny. A chance of showers in the afternoon. Humid with highs in the upper 70s. Light and variable winds, becoming southeast around 10 mph with gusts up to 20 mph in the afternoon. Chance of rain 40 percent.
TUESDAY NIGHT
Mostly cloudy with a 50 percent chance of showers. Lows around 60.
WEDNESDAY
Showers likely in the morning, then showers with a chance of thunderstorms in the afternoon. Highs in the lower 70s. Chance of rain 80 percent.
WEDNESDAY NIGHT
Showers with a chance of thunderstorms in the evening, then showers likely after midnight. Lows around 60. Chance of rain 80 percent.
THURSDAY
Showers likely. Highs in the lower 70s. Chance of rain 70 percent.
THURSDAY NIGHT
Partly cloudy with a chance of showers. Lows in the lower 60s. Chance of rain 50 percent.
FRIDAY
Partly sunny with a chance of showers. Highs in the upper 70s. Chance of rain 30 percent.
FRIDAY NIGHT
Partly cloudy. A chance of showers in the evening. Lows in the lower 60s. Chance of rain 30 percent.
SATURDAY
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  7/26/2026
Sunday
26 JUL 2026
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 2 PM 74° 74° Partly Cloudy 0%

0% Thunder
( 1% severe)
E   8 46% 52°
High 75° PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 5 PM 72° 72° Partly Cloudy E   7 44% 49°
Partly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 8 PM 64° 66° Clear 0%

0% Thunder
( 1% severe)
  CALM 65% 52°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 11 PM 57° 58° Partly Cloudy   CALM 90% 54°
Monday
27 JUL 2026
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 2 AM 55° 55° Partly Cloudy 0%

0% Thunder
( 0% severe)
  CALM 96% 54°
Low 53° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 5 AM 53° 53° Partly Cloudy   CALM 96% 52°
High 78° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 8 AM 61° 62° Partly Cloudy 0%

0% Thunder
( 0% severe)
  CALM 78% 54°

Partly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 11 AM 74° 74° Clear ESE   5 50% 54°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 2 PM 76° 78° Clear 1%

0% Thunder
( 3% severe)
ESE   8 46% 54°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 5 PM 73° 73° Partly Cloudy SE   9 51% 54°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 8 PM 67° 67° Partly Cloudy 2%

0% Thunder
( 6% severe)
SSE   5 68% 56°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 11 PM 62° 63° Clear SE   1 90% 59°
Tuesday
28 JUL 2026
PORTSMOUTH, NH 03803 weather forecast Day 3, 0 hours 2 AM 61° 62° Partly Cloudy 2%

0% Thunder
( 1% severe)
  CALM 97% 60°
Low 59° PORTSMOUTH, NH 03803 weather forecast Day 3, 3 hours 5 AM 60° 61° Partly Cloudy   CALM 100% 60°
High 79° PORTSMOUTH, NH 03803 weather forecast Day 3, 6 hours 8 AM 66° 66° Partly Cloudy 8%

0% Thunder
( 11% severe)
  CALM 87% 62°

Mostly Cloudy

Chance of Rain

PORTSMOUTH, NH 03803 weather forecast Day 3, 9 hours 11 AM 74° 74° Partly Cloudy SE   8 71% 64°
PORTSMOUTH, NH 03803 weather forecast Day 3, 15 hours 2 PM 76° 78° Mostly Cloudy 32%
RAIN
.1–.25 in
0% Thunder
( 14% severe)
SE   13 66% 64°
PORTSMOUTH, NH 03803 weather forecast Day 3, 18 hours 5 PM 74° 74° Mostly Cloudy SE   12 71% 64°
PORTSMOUTH, NH 03803 weather forecast Day 3, 21 hours 8 PM 70° 70° Mostly Cloudy     SE   8 78% 63°

PORTSMOUTH, NH extended weather forecast

Wednesday
29 JUL 2026
Thursday
30 JUL 2026
Friday
31 JUL 2026
Saturday
1 AUG 2026
Sunday
2 AUG 2026
Low 64° Low 61° Low 61° Low 61° Low 62°
High 71° High 74° High 79° High 79° High 81°
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
Overcast
78% Rain
Overcast
65% Rain
Partly Cloudy
25% Rain
Partly Cloudy
28% Rain
Partly Cloudy
35% Rain
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