PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

4:55 AM EDT AUG 10, 2026
Scattered Clouds
68°F
Feels Like: 68°F
Dewpoint: 63°F
Rel. Hum.: 84%
Visibility: 10 miles
Wind: Calm
Pressure: 29.96 inches
Last 72 hours

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PORTSMOUTH, NH 03803
Weather Forecast

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TODAY
Partly sunny. Highs in the mid 80s. Light and variable winds, becoming southeast around 10 mph this afternoon.
TONIGHT
Partly cloudy. A slight chance of showers in the evening. Humid with lows in the upper 60s. Light and variable winds. Chance of rain 20 percent.
TUESDAY
Mostly sunny. Warm with highs in the upper 80s. West winds around 10 mph.
TUESDAY NIGHT
Mostly clear. Lows in the mid 60s. Northwest winds around 10 mph in the evening, becoming light and variable.
WEDNESDAY
Mostly sunny. Highs in the mid 80s. Light and variable winds.
WEDNESDAY NIGHT
Partly cloudy. Lows in the lower 60s.
THURSDAY
Partly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 50 percent.
THURSDAY NIGHT
Partly cloudy. A chance of showers and thunderstorms in the evening. Lows in the lower 60s. Chance of rain 50 percent.
FRIDAY
Mostly sunny. Highs in the lower 80s.
FRIDAY NIGHT
Mostly clear. Lows in the upper 50s.
SATURDAY
Mostly sunny. Highs in the lower 80s.
SATURDAY NIGHT
Mostly clear. Lows in the upper 50s.
SUNDAY
Partly sunny. 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/ 9/2026
Monday
10 AUG 2026
PORTSMOUTH, NH 03803 weather forecast Day 1, 0 hours 2 AM 69° 69° Clear 0%

0% Thunder
( 0% severe)
WNW   1 81% 63°
Low 65° PORTSMOUTH, NH 03803 weather forecast Day 1, 3 hours 5 AM 66° 66° Partly Cloudy   CALM 87% 62°
High 86° PORTSMOUTH, NH 03803 weather forecast Day 1, 6 hours 8 AM 72° 72° Partly Cloudy 1%

0% Thunder
( 0% severe)
  CALM 76% 64°

Partly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 1, 9 hours 11 AM 82° 84° Partly Cloudy SSE   7 55% 64°
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 2 PM 84° 85° Partly Cloudy 6%

0% Thunder
( 5% severe)
SSE   10 51% 64°
PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 5 PM 82° 84° Mostly Cloudy SSE   9 56% 65°
PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 8 PM 76° 78° Mostly Cloudy 22%
RAIN
<.01 in
0% Thunder
( 14% severe)
S   6 71% 66°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 11 PM 72° 72° Partly Cloudy SW   6 87% 68°
Tuesday
11 AUG 2026
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 2 AM 71° 71° Partly Cloudy 2%

0% Thunder
( 3% severe)
WSW   7 90% 68°
Low 68° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 5 AM 69° 69° Partly Cloudy W   8 93% 67°
High 87° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 8 AM 73° 73° Clear 0%

0% Thunder
( 1% severe)
W   9 81% 67°

Partly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 11 AM 83° 85° Partly Cloudy WNW   12 55% 65°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 2 PM 86° 86° Partly Cloudy 0%

0% Thunder
( 3% severe)
WNW   12 42% 60°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 5 PM 86° 85° Partly Cloudy WNW   12 37% 57°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 8 PM 76° 78° Clear 0%

0% Thunder
( 1% severe)
WNW   8 52% 57°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 11 PM 70° 70° Partly Cloudy WNW   7 63% 57°

PORTSMOUTH, NH extended weather forecast

Wednesday
12 AUG 2026
Thursday
13 AUG 2026
Friday
14 AUG 2026
Saturday
15 AUG 2026
Sunday
16 AUG 2026
Low 62° Low 62° Low 60° Low 56° Low 59°
High 82° High 82° High 76° High 76° High 79°
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
5% Rain
Partly Cloudy
20% Rain
Partly Cloudy
29% Rain
Clear
17% Rain
Mostly Cloudy
21% Rain
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