PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

3:55 AM EDT JUL 17, 2026
Clear
64°F
Feels Like: 64°F
Dewpoint: 55°F
Rel. Hum.: 73%
Visibility: 10 miles
Wind: W at 8 mph
Pressure: 29.90 inches
Last 72 hours

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PORTSMOUTH, NH 03803
Weather Forecast

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REST OF TONIGHT
Mostly clear. Lows around 60. West winds around 10 mph.
FRIDAY
Mostly sunny. Highs in the lower 80s. Northwest winds around 10 mph.
FRIDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 50s. Light and variable winds.
SATURDAY
Partly sunny in the morning, then mostly cloudy with scattered showers in the afternoon. Areas of smoke. Highs in the lower 80s. Light and variable winds, becoming south 10 to 15 mph with gusts up to 25 mph in the afternoon. Chance of rain 50 percent.
SATURDAY NIGHT
Scattered thunderstorms in the evening. Areas of smoke in the evening. Showers likely. Humid with lows in the mid 60s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 70 percent.
SUNDAY
Mostly sunny. Highs in the lower 80s.
SUNDAY NIGHT
Mostly clear. Lows in the upper 50s.
MONDAY
Mostly sunny. Highs around 80.
MONDAY NIGHT
Partly cloudy. Lows in the lower 60s.
TUESDAY
Partly sunny. A chance of showers in the afternoon. Highs in the lower 80s. Chance of rain 30 percent.
TUESDAY NIGHT
Showers. Lows in the mid 60s. Chance of rain 80 percent.
WEDNESDAY
Showers likely, mainly in the morning. Warm with highs in the mid 80s. Chance of rain 70 percent.
WEDNESDAY 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.

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  7/16/2026
Friday
17 JUL 2026
PORTSMOUTH, NH 03803 weather forecast Day 1, 0 hours 2 AM 64° 64° Clear 0%

0% Thunder
( 0% severe)
W   8 67% 53°
Low 60° PORTSMOUTH, NH 03803 weather forecast Day 1, 3 hours 5 AM 61° 60° Partly Cloudy W   9 67% 50°
High 83° PORTSMOUTH, NH 03803 weather forecast Day 1, 6 hours 8 AM 66° 66° Clear 0%

0% Thunder
( 0% severe)
WNW   10 56% 50°

Partly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 1, 9 hours 11 AM 75° 75° Partly Cloudy WNW   12 40% 49°
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 2 PM 81° 80° Partly Cloudy 0%

0% Thunder
( 1% severe)
WNW   12 33% 49°
PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 5 PM 81° 80° Clear WNW   10 30% 47°
PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 8 PM 73° 73° Clear 0%

0% Thunder
( 1% severe)
WNW   5 46% 51°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 11 PM 65° 65° Partly Cloudy   CALM 60% 51°
Saturday
18 JUL 2026
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 2 AM 61° 62° Partly Cloudy 2%

0% Thunder
( 0% severe)
  CALM 72% 52°
Low 59° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 5 AM 59° 60° Partly Cloudy   CALM 80% 53°
High 86° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 8 AM 67° 67° Partly Cloudy 3%

0% Thunder
( 1% severe)
  CALM 68% 56°

Mostly Cloudy

Rain Likely

PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 11 AM 80° 81° Partly Cloudy S   8 49% 59°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 2 PM 83° 84° Mostly Cloudy 64%
RAIN
***
0% Thunder
( 24% severe)
S   14 51% 63°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 5 PM 81° 83° Mostly Cloudy SSW   16 60% 66°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 8 PM 75° 75° Mostly Cloudy 75%
RAIN
***
0% Thunder
( 27% severe)
SSW   13 76% 67°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 11 PM 71° 71° Mostly Cloudy SSW   12 93% 69°

PORTSMOUTH, NH extended weather forecast

Sunday
19 JUL 2026
Monday
20 JUL 2026
Tuesday
21 JUL 2026
Wednesday
22 JUL 2026
Thursday
23 JUL 2026
Low 67° Low 57° Low 61° Low 64° Low 63°
High 83° High 78° High 77° High 82° 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
70% Rain
Clear
5% Rain
Mostly Cloudy
34% Rain
Overcast
73% Rain
Partly Cloudy
31% Rain
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