PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

9:55 AM EDT JUN 28, 2026
Broken Clouds
70°F
Feels Like: 70°F
Dewpoint: 64°F
Rel. Hum.: 81%
Visibility: 10 miles
Wind: Calm
Pressure: 30.01 inches
Last 72 hours

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PORTSMOUTH, NH 03803
Weather Forecast

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TODAY
Mostly cloudy this morning, then clearing. Areas of dense fog this morning with visibility one quarter mile or less at times. Highs in the upper 70s. Light and variable winds.
TONIGHT
Partly cloudy. Lows in the upper 50s. Light and variable winds.
MONDAY
Partly sunny. Highs around 80. Light and variable winds.
MONDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 60s. Light and variable winds.
TUESDAY
Partly sunny. Warm with highs in the mid 80s. Light and variable winds, becoming south around 10 mph in the afternoon. Heat index values in the lower 90s in the afternoon.
TUESDAY NIGHT
Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers and thunderstorms. Lows in the upper 60s. Chance of rain 40 percent.
WEDNESDAY
Partly sunny. Hot with highs around 90.
WEDNESDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 70s.
THURSDAY
Mostly sunny. Hot with highs in the upper 90s.
THURSDAY NIGHT
Mostly clear. Lows in the lower 70s.
FRIDAY
Partly sunny. A chance of showers in the afternoon. Hot with highs in the mid 90s. Chance of rain 30 percent.
FRIDAY NIGHT
A chance of showers in the evening. Partly cloudy. Lows in the upper 60s. Chance of rain 30 percent.
INDEPENDENCE DAY
Partly sunny. A chance of showers in the afternoon. Warm with highs in the mid 80s. Chance of rain 50 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  6/27/2026
Sunday
28 JUN 2026
PORTSMOUTH, NH 03803 weather forecast Day 1, 0 hours 2 AM 60° 61° Mostly Cloudy 4%

0% Thunder
( 4% severe)
  CALM 100% 60°
Low 58° PORTSMOUTH, NH 03803 weather forecast Day 1, 3 hours 5 AM 59° 60° Mostly Cloudy   CALM 100% 59°
High 79° PORTSMOUTH, NH 03803 weather forecast Day 1, 6 hours 8 AM 65° 65° Mostly Cloudy 2%

0% Thunder
( 6% severe)
  CALM 87% 61°

Partly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 1, 9 hours 11 AM 75° 75° Partly Cloudy ESE   3 66% 63°
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 2 PM 77° 79° Partly Cloudy 11%
RAIN
<.01 in
0% Thunder
( 19% severe)
SE   6 62% 63°
PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 5 PM 75° 75° Partly Cloudy SSE   7 69% 64°
PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 8 PM 70° 70° Partly Cloudy 7%

0% Thunder
( 16% severe)
SSE   2 76% 62°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 11 PM 64° 66° Partly Cloudy   CALM 93% 62°
Monday
29 JUN 2026
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 2 AM 62° 63° Mostly Cloudy 3%

0% Thunder
( 1% severe)
  CALM 97% 61°
Low 60° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 5 AM 60° 61° Mostly Cloudy   CALM 96% 59°
High 83° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 8 AM 68° 68° Partly Cloudy 0%

0% Thunder
( 1% severe)
  CALM 78% 61°

Partly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 11 AM 79° 80° Partly Cloudy ESE   2 54% 61°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 2 PM 81° 82° Partly Cloudy 0%

0% Thunder
( 3% severe)
SE   6 51% 61°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 5 PM 79° 81° Partly Cloudy SSE   7 58% 63°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 8 PM 72° 72° Clear 0%

0% Thunder
( 3% severe)
SSE   5 68% 61°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 11 PM 67° 67° Partly Cloudy SSW   3 75% 59°

PORTSMOUTH, NH extended weather forecast

Tuesday
30 JUN 2026
Wednesday
1 JUL 2026
Thursday
2 JUL 2026
Friday
3 JUL 2026
Saturday
4 JUL 2026
Low 62° Low 68° Low 66° Low 72° Low 69°
High 87° High 81° High 93° High 88° High 86°
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
7% Rain
Overcast
49% Rain
Mostly Cloudy
27% Rain
Partly Cloudy
26% Rain
Partly Cloudy
34% Rain
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