PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

9:55 PM EDT AUG 22, 2025
Few Clouds
64°F
Feels Like: 64°F
Dewpoint: 54°F
Rel. Hum.: 70%
Visibility: 10 miles
Wind: Calm
Pressure: 30.00 inches
Last 72 hours

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PORTSMOUTH, NH 03803
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
REST OF TONIGHT
Mostly clear. Lows around 60. Light and variable winds.
SATURDAY
Mostly sunny. Warm with highs in the mid 80s. Light and variable winds, becoming south 10 to 15 mph with gusts up to 25 mph in the afternoon.
SATURDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 60s. South winds 10 to 15 mph with gusts up to 25 mph.
SUNDAY
Partly sunny. Highs in the lower 80s. South winds 10 to 15 mph with gusts up to 25 mph.
SUNDAY NIGHT
Partly cloudy in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the mid 60s. South winds around 10 mph with gusts up to 25 mph in the evening, becoming light and variable. Chance of rain 50 percent.
MONDAY
Showers likely. A chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 70 percent.
MONDAY NIGHT
Showers likely with a chance of thunderstorms in the evening, then mostly clear after midnight. Lows in the upper 50s. Chance of rain 60 percent.
TUESDAY
Mostly sunny. Highs in the upper 70s.
TUESDAY NIGHT
Mostly clear. Lows in the mid 50s.
WEDNESDAY
Mostly sunny. Highs in the mid 70s.
WEDNESDAY NIGHT
Mostly clear. Lows in the mid 50s.
THURSDAY
Mostly sunny. Highs in the upper 70s.
THURSDAY NIGHT
Mostly clear. Lows in the mid 50s.

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 AM EDT  8/22/2025
Friday
22 AUG 2025
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 2 PM 82° 81° Clear 0%

0% Thunder
( 0% severe)
ENE   8 33% 50°
High 83° PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 5 PM 79° 79° Clear SE   7 39% 52°
Clear



PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 8 PM 69° 69° Clear 0%

0% Thunder
( 1% severe)
S   6 59% 54°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 11 PM 65° 65° Clear S   3 68% 54°
Saturday
23 AUG 2025
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 2 AM 62° 63° Clear 1%

0% Thunder
( 0% severe)
S   2 75% 54°
Low 58° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 5 AM 60° 61° Clear SSW   2 87% 56°
High 84° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 8 AM 66° 66° Clear 2%

0% Thunder
( 0% severe)
SW   2 75% 58°

Clear



PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 11 AM 79° 80° Clear S   7 50% 59°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 2 PM 84° 83° Clear 2%

0% Thunder
( 1% severe)
S   12 40% 57°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 5 PM 81° 81° Partly Cloudy S   14 46% 58°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 8 PM 74° 74° Partly Cloudy 0%

0% Thunder
( 1% severe)
S   12 59% 59°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 11 PM 71° 71° Partly Cloudy SSW   10 63% 58°
Sunday
24 AUG 2025
PORTSMOUTH, NH 03803 weather forecast Day 3, 0 hours 2 AM 67° 67° Partly Cloudy 1%

0% Thunder
( 0% severe)
SSW   9 75% 59°
Low 64° PORTSMOUTH, NH 03803 weather forecast Day 3, 3 hours 5 AM 66° 66° Partly Cloudy SSW   9 81% 60°
High 83° PORTSMOUTH, NH 03803 weather forecast Day 3, 6 hours 8 AM 69° 69° Partly Cloudy 2%

0% Thunder
( 1% severe)
S   9 76% 61°

Partly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 3, 9 hours 11 AM 78° 79° Partly Cloudy S   13 54% 60°
PORTSMOUTH, NH 03803 weather forecast Day 3, 15 hours 2 PM 81° 81° Partly Cloudy 4%

0% Thunder
( 3% severe)
S   15 47% 59°
PORTSMOUTH, NH 03803 weather forecast Day 3, 18 hours 5 PM 80° 81° Partly Cloudy S   16 49% 59°
PORTSMOUTH, NH 03803 weather forecast Day 3, 21 hours 8 PM 73° 73° Mostly Cloudy     S   12 66% 61°

PORTSMOUTH, NH extended weather forecast

Monday
25 AUG 2025
Tuesday
26 AUG 2025
Wednesday
27 AUG 2025
Thursday
28 AUG 2025
Friday
29 AUG 2025
Low 65° Low 57° Low 53° Low 54° Low 57°
High 79° High 78° High 72° High 75° High 77°
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 <!--SEARCHED_TOWN_NAME--> weather forecast Day 8
Overcast
69% Rain
Partly Cloudy
37% Rain
Partly Cloudy
29% Rain
Partly Cloudy
18% Rain
Partly Cloudy
26% Rain
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