PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

Enter ZIP code or City, State   
    


PORTSMOUTH, NH
Current Weather

12:55 AM EDT AUG 26, 2026
Clear
64°F
Feels Like: 64°F
Dewpoint: 59°F
Rel. Hum.: 84%
Visibility: 10 miles
Wind: Calm
Pressure: 29.96 inches
Last 72 hours

Local Area Snow Depth

New Hampshire Current Weather

New Hampshire MOS Forecast Weather


Weather Map


(Automated weather data from NWS/FAA)
10-Day model forecast maps
2026 Hurricanes

PORTSMOUTH, NH 03803
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TONIGHT
Mostly clear. Lows in the upper 50s. Light and variable winds.
WEDNESDAY
Mostly sunny. Highs around 80. Light and variable winds, becoming south around 10 mph in the afternoon.
WEDNESDAY NIGHT
Partly cloudy. Lows in the lower 60s. Light and variable winds.
THURSDAY
Partly sunny. A chance of showers in the afternoon. Humid with highs in the lower 80s. Light and variable winds, becoming south around 10 mph with gusts up to 20 mph in the afternoon. Chance of rain 40 percent.
THURSDAY NIGHT
Partly cloudy with a chance of showers in the evening, then showers likely after midnight. Lows in the mid 60s. Chance of rain 70 percent.
FRIDAY
Showers likely. Highs around 80. Chance of rain 60 percent.
FRIDAY NIGHT
Partly cloudy. A chance of showers in the evening. Lows in the lower 60s. Chance of rain 40 percent.
SATURDAY
Partly sunny. Highs in the upper 70s.
SATURDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 50s.
SUNDAY
Mostly sunny. Highs around 80.
SUNDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 60s.
MONDAY
Partly sunny. 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  8/25/2026
Wednesday
26 AUG 2026
PORTSMOUTH, NH 03803 weather forecast Day 1, 0 hours 2 AM 62° 62° Clear 0%

0% Thunder
( 0% severe)
WNW   5 93% 60°
Low 59° PORTSMOUTH, NH 03803 weather forecast Day 1, 3 hours 5 AM 60° 60° Clear W   5 96% 59°
High 82° PORTSMOUTH, NH 03803 weather forecast Day 1, 6 hours 8 AM 64° 65° Clear 0%

0% Thunder
( 0% severe)
NW   3 84% 59°

Partly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 1, 9 hours 11 AM 76° 78° Clear   CALM 58% 60°
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 2 PM 78° 79° Partly Cloudy 0%

0% Thunder
( 1% severe)
SSE   8 52% 59°
PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 5 PM 76° 78° Partly Cloudy SSE   9 56% 59°
PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 8 PM 70° 70° Partly Cloudy 0%

0% Thunder
( 1% severe)
SSE   7 71% 60°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 11 PM 66° 66° Partly Cloudy S   5 87% 62°
Thursday
27 AUG 2026
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 2 AM 64° 66° Mostly Cloudy 0%

0% Thunder
( 0% severe)
WSW   1 93% 62°
Low 62° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 5 AM 63° 64° Mostly Cloudy SW   2 93% 61°
High 84° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 8 AM 67° 67° Partly Cloudy 2%

0% Thunder
( 6% severe)
SSW   3 84% 62°

Partly Cloudy

Chance of Rain

PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 11 AM 78° 80° Partly Cloudy S   9 62% 64°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 2 PM 80° 82° Partly Cloudy 22%
RAIN
<.01 in
0% Thunder
( 16% severe)
SSE   14 62% 66°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 5 PM 79° 81° Mostly Cloudy S   13 62% 65°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 8 PM 74° 74° Partly Cloudy 14%
RAIN
<.01 in
0% Thunder
( 16% severe)
S   10 71% 64°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 11 PM 70° 70° Mostly Cloudy S   9 87% 66°

PORTSMOUTH, NH extended weather forecast

BAD DAY
BAD DATE
BAD DAY
BAD DATE
BAD DAY
BAD DATE
BAD DAY
BAD DATE
BAD DAY
BAD DATE
Low 61° Low 66° Low 61° Low 54° Low 60°
High 82° High 77° High 74° High 77° High 84°
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
31% Rain
Overcast
76% Rain
Partly Cloudy
25% Rain
Clear
14% Rain
Mostly Cloudy
22% Rain
SELECT BOX EXAMPLES:
for LOCAL WEATHER:
SNOW DEPTH:
LOCAL WEATHER RADAR:
STATE WEATHER MAP:
Portsmouth, NH
Portsmouth, NH snow
Portsmouth, NH radar
NH map
-or-
-or-
-or-
 
03803
03803 snow
03803 radar
 
-or-
-or-
 
 
NH
NH snow
 
 
Copyright © 2026 WeatherStreet.com
Put our free WeatherStreet weather lookup on your web page.
Terms & Conditions