PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

7:55 AM EDT AUG 14, 2026
Clear
70°F
Feels Like: 70°F
Dewpoint: 55°F
Rel. Hum.: 59%
Visibility: 10 miles
Wind: WNW at 10 mph
Pressure: 29.99 inches
Last 72 hours

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PORTSMOUTH, NH 03803
Weather Forecast

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Snow Depth pages
TODAY
Sunny. Highs in the lower 80s. Northwest winds around 10 mph.
TONIGHT
Mostly clear. Lows in the upper 50s. Light and variable winds.
SATURDAY
Mostly sunny. Highs in the lower 80s. Light and variable winds.
SATURDAY NIGHT
Mostly clear. Lows in the upper 50s. Light and variable winds.
SUNDAY
Partly sunny. Highs in the upper 70s. Light and variable winds, becoming southeast around 10 mph in the afternoon.
SUNDAY NIGHT
A chance of showers in the evening, then showers after midnight. Lows in the lower 60s. Chance of rain 80 percent.
MONDAY
Showers. Highs around 80. Chance of rain 80 percent.
MONDAY NIGHT
Partly cloudy with a chance of showers in the evening, then mostly clear after midnight. Lows around 60. Chance of rain 40 percent.
TUESDAY
Mostly sunny. Highs in the lower 80s.
TUESDAY NIGHT
Mostly clear. Lows around 60.
WEDNESDAY
Mostly sunny. Highs in the lower 80s.
WEDNESDAY NIGHT
Mostly clear in the evening, then partly cloudy with a chance of showers after midnight. Lows in the mid 60s. Chance of rain 30 percent.
THURSDAY
Partly sunny with a 50 percent chance of showers. Highs in the lower 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  8/13/2026
Friday
14 AUG 2026
PORTSMOUTH, NH 03803 weather forecast Day 1, 0 hours 2 AM 64° 64° Clear 1%

0% Thunder
( 0% severe)
W   7 87% 60°
Low 61° PORTSMOUTH, NH 03803 weather forecast Day 1, 3 hours 5 AM 62° 61° Clear W   8 90% 59°
High 83° PORTSMOUTH, NH 03803 weather forecast Day 1, 6 hours 8 AM 67° 67° Clear 0%

0% Thunder
( 0% severe)
WNW   9 75% 59°

Clear



PORTSMOUTH, NH 03803 weather forecast Day 1, 9 hours 11 AM 77° 79° Clear WNW   10 48% 56°
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 2 PM 81° 80° Clear 2%

0% Thunder
( 7% severe)
WNW   13 38% 53°
PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 5 PM 81° 80° Clear WNW   12 34% 50°
PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 8 PM 72° 72° Partly Cloudy 1%

0% Thunder
( 2% severe)
NNW   8 49% 52°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 11 PM 65° 65° Clear N   5 68% 54°
Saturday
15 AUG 2026
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 2 AM 60° 61° Clear 1%

0% Thunder
( 0% severe)
WNW   3 84% 55°
Low 57° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 5 AM 58° 58° Partly Cloudy NW   5 87% 54°
High 82° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 8 AM 64° 65° Clear 0%

0% Thunder
( 0% severe)
NNW   5 75% 56°

Partly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 11 AM 77° 78° Partly Cloudy NNW   3 45% 54°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 2 PM 80° 80° Clear 0%

0% Thunder
( 1% severe)
NNW   6 38% 52°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 5 PM 78° 79° Partly Cloudy SSW   8 39% 51°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 8 PM 70° 70° Clear 0%

0% Thunder
( 1% severe)
S   6 59% 55°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 11 PM 64° 65° Clear W   3 75% 56°

PORTSMOUTH, NH extended weather forecast

Sunday
16 AUG 2026
Monday
17 AUG 2026
Tuesday
18 AUG 2026
Wednesday
19 AUG 2026
Thursday
20 AUG 2026
Low 57° Low 64° Low 61° Low 62° Low 65°
High 78° High 71° High 82° High 84° 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
Mostly Cloudy
7% Rain
Overcast
71% Rain
Mostly Cloudy
29% Rain
Partly Cloudy
24% Rain
Mostly Cloudy
39% Rain
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