PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

5:55 AM EDT AUG 11, 2026
Few Clouds
68°F
Feels Like: 68°F
Dewpoint: 64°F
Rel. Hum.: 87%
Visibility: 10 miles
Wind: NW at 3 mph
Pressure: 29.77 inches
Last 72 hours

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PORTSMOUTH, NH 03803
Weather Forecast

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Snow Depth pages
TODAY
Mostly sunny. Warm with highs in the mid 80s. West winds around 10 mph.
TONIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 60s. Light and variable winds.
WEDNESDAY
Mostly sunny. Highs in the lower 80s. Light and variable winds.
WEDNESDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 60s. Light and variable winds.
THURSDAY
Partly sunny. A chance of showers in the afternoon. Highs in the lower 80s. Light and variable winds. Chance of rain 40 percent.
THURSDAY NIGHT
Partly cloudy with a chance of showers in the evening, then mostly clear after midnight. Lows in the lower 60s. Chance of rain 40 percent.
FRIDAY
Mostly sunny. Highs in the lower 80s.
FRIDAY NIGHT
Clear. Lows in the upper 50s.
SATURDAY
Sunny. Highs in the lower 80s.
SATURDAY NIGHT
Mostly clear. Lows in the upper 50s.
SUNDAY
Mostly sunny. Highs in the upper 70s.
SUNDAY NIGHT
Partly cloudy. A chance of showers after midnight. Lows in the lower 60s. Chance of rain 30 percent.
MONDAY
Partly sunny with a 40 percent chance of showers. Highs in the upper 70s.

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  8/10/2026
Tuesday
11 AUG 2026
PORTSMOUTH, NH 03803 weather forecast Day 1, 0 hours 2 AM 71° 71° Partly Cloudy 5%

0% Thunder
( 3% severe)
SW   6 87% 67°
Low 68° PORTSMOUTH, NH 03803 weather forecast Day 1, 3 hours 5 AM 69° 69° Partly Cloudy W   7 93% 67°
High 88° PORTSMOUTH, NH 03803 weather forecast Day 1, 6 hours 8 AM 73° 73° Clear 1%

0% Thunder
( 1% severe)
W   9 81% 67°

Partly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 1, 9 hours 11 AM 82° 83° Clear WNW   12 53% 63°
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 2 PM 86° 85° Partly Cloudy 1%

0% Thunder
( 4% severe)
WNW   13 40% 59°
PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 5 PM 85° 84° Partly Cloudy WNW   12 37% 56°
PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 8 PM 76° 78° Partly Cloudy 1%

0% Thunder
( 1% severe)
WNW   7 52% 57°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 11 PM 70° 70° Partly Cloudy NW   5 63% 57°
Wednesday
12 AUG 2026
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 2 AM 66° 66° Partly Cloudy 1%

0% Thunder
( 0% severe)
WNW   3 75% 58°
Low 63° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 5 AM 64° 65° Partly Cloudy WNW   3 81% 58°
High 85° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 8 AM 69° 69° Partly Cloudy 0%

0% Thunder
( 0% severe)
NW   3 73% 60°

Partly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 11 AM 81° 81° Clear WNW   3 47% 59°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 2 PM 82° 82° Clear 3%

0% Thunder
( 7% severe)
WSW   7 43% 57°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 5 PM 80° 81° Partly Cloudy SW   8 47% 58°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 8 PM 73° 73° Partly Cloudy 1%

0% Thunder
( 5% severe)
WSW   5 64% 60°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 11 PM 68° 68° Partly Cloudy WSW   1 76% 60°

PORTSMOUTH, NH extended weather forecast

Thursday
13 AUG 2026
Friday
14 AUG 2026
Saturday
15 AUG 2026
Sunday
16 AUG 2026
Monday
17 AUG 2026
Low 61° Low 63° Low 57° Low 57° Low 60°
High 81° High 78° High 77° High 76° High 76°
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
40% Rain
Partly Cloudy
54% Rain
Partly Cloudy
4% Rain
Mostly Cloudy
21% Rain
Mostly Cloudy
58% Rain
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