PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

8:55 PM EDT MAY 25, 2026
Few Clouds
66°F
Feels Like: 66°F
Dewpoint: 59°F
Rel. Hum.: 78%
Visibility: 10 miles
Wind: Calm
Pressure: 29.99 inches
Last 72 hours

Local Area Snow Depth

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PORTSMOUTH, NH 03803
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TONIGHT
Mostly clear. Patchy fog. Lows in the mid 50s. Northwest winds 10 to 15 mph this evening, becoming light and variable.
TUESDAY
Mostly sunny. Highs in the lower 80s. Light and variable winds, becoming southwest around 10 mph in the afternoon.
TUESDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 60s. Light and variable winds.
WEDNESDAY
Partly sunny. Highs in the mid 80s. Light and variable winds, becoming west around 10 mph in the afternoon.
WEDNESDAY NIGHT
Partly cloudy. Lows in the mid 50s. Light and variable winds.
THURSDAY
Partly sunny with a chance of showers. Highs in the upper 60s. Chance of rain 50 percent.
THURSDAY NIGHT
Partly cloudy. A chance of showers in the evening. Lows around 50. Chance of rain 50 percent.
FRIDAY
Partly sunny with a 40 percent chance of showers. Highs in the mid 60s.
FRIDAY NIGHT
Partly cloudy with a 50 percent chance of showers. Lows in the upper 40s.
SATURDAY
Partly sunny with a 50 percent chance of showers. Highs in the lower 60s.
SATURDAY NIGHT
Partly cloudy. A chance of showers in the evening. Lows in the upper 40s. Chance of rain 40 percent.
SUNDAY
Partly sunny. Highs in the upper 60s.
SUNDAY NIGHT
Partly cloudy. Lows in the lower 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  5/25/2026
Monday
25 MAY 2026
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 2 PM 64° 64° Mostly Cloudy 2%

0% Thunder
( 0% severe)
W   6 78% 57°
High 72° PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 5 PM 71° 71° Partly Cloudy WNW   7 71% 61°
Decreasing Clouds



PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 8 PM 66° 66° Clear 0%

0% Thunder
( 0% severe)
WNW   2 81% 60°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 11 PM 60° 61° Clear WNW   3 93% 58°
Tuesday
26 MAY 2026
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 2 AM 56° 56° Partly Cloudy 0%

0% Thunder
( 0% severe)
W   3 93% 54°
Low 54° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 5 AM 54° 54° Partly Cloudy W   2 93% 52°
High 82° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 8 AM 63° 64° Partly Cloudy 0%

0% Thunder
( 0% severe)
  CALM 78% 56°

Clear



PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 11 AM 76° 78° Clear SW   5 48% 55°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 2 PM 80° 80° Clear 1%

0% Thunder
( 0% severe)
SSW   8 41% 54°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 5 PM 80° 80° Clear SW   9 45% 57°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 8 PM 72° 72° Clear 0%

0% Thunder
( 1% severe)
SW   7 59% 57°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 11 PM 67° 67° Partly Cloudy WSW   8 68% 56°
Wednesday
27 MAY 2026
PORTSMOUTH, NH 03803 weather forecast Day 3, 0 hours 2 AM 64° 64° Partly Cloudy 0%

0% Thunder
( 1% severe)
WSW   8 73% 55°
Low 62° PORTSMOUTH, NH 03803 weather forecast Day 3, 3 hours 5 AM 62° 62° Partly Cloudy WSW   7 75% 54°
High 84° PORTSMOUTH, NH 03803 weather forecast Day 3, 6 hours 8 AM 68° 68° Partly Cloudy 1%

0% Thunder
( 1% severe)
W   7 65% 56°

Mostly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 3, 9 hours 11 AM 79° 80° Partly Cloudy W   9 47% 57°
PORTSMOUTH, NH 03803 weather forecast Day 3, 15 hours 2 PM 83° 82° Mostly Cloudy 8%

0% Thunder
( 7% severe)
W   10 37% 54°
PORTSMOUTH, NH 03803 weather forecast Day 3, 18 hours 5 PM 80° 80° Mostly Cloudy WNW   9 44% 56°
PORTSMOUTH, NH 03803 weather forecast Day 3, 21 hours 8 PM 71° 71° Mostly Cloudy     NW   6 57% 55°

PORTSMOUTH, NH extended weather forecast

Thursday
28 MAY 2026
Friday
29 MAY 2026
Saturday
30 MAY 2026
Sunday
31 MAY 2026
Monday
1 JUN 2026
Low 58° Low 49° Low 47° Low 44° Low 51°
High 67° High 59° High 57° High 62° High 72°
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
66% Rain
Overcast
39% Rain
Overcast
71% Rain
Mostly Cloudy
55% Rain
Partly Cloudy
19% Rain
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