PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

8:55 AM EDT JUN 25, 2026
Broken Clouds
72°F
Feels Like: 72°F
Dewpoint: 57°F
Rel. Hum.: 59%
Visibility: 10 miles
Wind: W at 5 mph
Pressure: 30.03 inches
Last 72 hours

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PORTSMOUTH, NH 03803
Weather Forecast

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TODAY
Partly sunny. Highs in the lower 80s. Light and variable winds, becoming south around 10 mph this afternoon.
TONIGHT
Partly cloudy with isolated showers in the evening, then mostly cloudy with showers likely after midnight. Lows around 60. Light and variable winds. Chance of rain 70 percent.
FRIDAY
Showers likely. Isolated thunderstorms in the afternoon. Humid with highs in the upper 70s. Light and variable winds, becoming south around 10 mph in the afternoon. Chance of rain 70 percent.
FRIDAY NIGHT
Partly cloudy. Scattered showers in the evening. Lows around 60. Light and variable winds. Chance of rain 50 percent.
SATURDAY
Partly sunny. Scattered showers in the morning. Highs in the upper 70s. Light and variable winds. Chance of rain 30 percent.
SATURDAY NIGHT
Partly cloudy. Lows in the upper 50s.
SUNDAY
Partly sunny. Highs in the lower 80s.
SUNDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows around 60.
MONDAY
Mostly sunny. Highs in the lower 80s.
MONDAY NIGHT
Partly cloudy. Lows in the mid 60s.
TUESDAY
Partly sunny. Warm with highs in the upper 80s.
TUESDAY NIGHT
Partly cloudy. Lows in the mid 60s.
WEDNESDAY
Partly sunny. Warm with highs in the mid 80s.

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  6/24/2026
Thursday
25 JUN 2026
PORTSMOUTH, NH 03803 weather forecast Day 1, 0 hours 2 AM 61° 61° Partly Cloudy 1%

0% Thunder
( 0% severe)
W   5 81% 55°
Low 58° PORTSMOUTH, NH 03803 weather forecast Day 1, 3 hours 5 AM 59° 59° Partly Cloudy W   5 83% 54°
High 83° PORTSMOUTH, NH 03803 weather forecast Day 1, 6 hours 8 AM 67° 67° Partly Cloudy 1%

0% Thunder
( 0% severe)
W   1 70% 57°

Mostly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 1, 9 hours 11 AM 79° 80° Partly Cloudy WSW   3 45% 56°
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 2 PM 81° 81° Mostly Cloudy 4%

0% Thunder
( 5% severe)
S   7 41% 55°
PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 5 PM 77° 79° Mostly Cloudy SSE   9 52% 58°
PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 8 PM 72° 72° Partly Cloudy 23%
RAIN
.01–.1 in
0% Thunder
( 11% severe)
SSE   6 61% 58°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 11 PM 67° 67° Mostly Cloudy SE   3 75% 59°
Friday
26 JUN 2026
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 2 AM 64° 65° Mostly Cloudy 70%
RAIN
***
0% Thunder
( 11% severe)
SSW   3 87% 60°
Low 61° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 5 AM 62° 62° Mostly Cloudy SSW   5 90% 59°
High 80° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 8 AM 64° 64° Mostly Cloudy 64%
RAIN
>2 in
0% Thunder
( 13% severe)
S   7 90% 61°

Mostly Cloudy

Rain Likely

PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 11 AM 72° 72° Mostly Cloudy SSE   8 73% 63°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 2 PM 77° 79° Mostly Cloudy 65%
RAIN
***
0% Thunder
( 25% severe)
SSE   8 64% 64°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 5 PM 77° 79° Mostly Cloudy SSE   6 71% 67°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 8 PM 73° 73° Partly Cloudy 2%

0% Thunder
( 10% severe)
SSE   2 76% 65°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 11 PM 67° 67° Partly Cloudy W   5 87% 63°

PORTSMOUTH, NH extended weather forecast

Saturday
27 JUN 2026
Sunday
28 JUN 2026
Monday
29 JUN 2026
Tuesday
30 JUN 2026
Wednesday
1 JUL 2026
Low 63° Low 61° Low 59° Low 62° Low 62°
High 78° High 79° High 82° High 83° High 80°
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
23% Rain
Partly Cloudy
15% Rain
Partly Cloudy
18% Rain
Partly Cloudy
12% Rain
Mostly Cloudy
15% Rain
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