PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

2:55 AM EDT MAY 21, 2026
Broken Clouds
66°F
Feels Like: 66°F
Dewpoint: 41°F
Rel. Hum.: 40%
Visibility: 10 miles
Wind: NW at 12 mph
Pressure: 29.99 inches
Last 72 hours

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PORTSMOUTH, NH 03803
Weather Forecast

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Snow Depth pages
TODAY
Mostly cloudy. Cooler with highs in the mid 60s. North winds around 10 mph this morning, becoming light and variable.
TONIGHT
Partly cloudy in the evening, then clearing. Lows in the lower 40s. Light and variable winds.
FRIDAY
Mostly sunny. Highs in the mid 60s. Light and variable winds, becoming southeast around 10 mph in the afternoon.
FRIDAY NIGHT
Partly cloudy. Lows in the mid 40s. Light and variable winds.
SATURDAY
Mostly cloudy. Highs in the lower 60s. Light and variable winds.
SATURDAY NIGHT
Cloudy. A chance of showers after midnight. Lows in the mid 40s. Chance of rain 40 percent.
SUNDAY
Showers likely. Highs in the mid 50s. Chance of rain 70 percent.
SUNDAY NIGHT
Showers likely. Lows in the upper 40s. Chance of rain 70 percent.
MEMORIAL DAY
Cloudy with a 40 percent chance of showers. Highs in the mid 60s.
MONDAY NIGHT
Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 50s.
TUESDAY
Partly sunny. Highs in the mid 70s.
TUESDAY NIGHT
Mostly clear. Lows in the mid 50s.
WEDNESDAY
Partly sunny. Highs in the mid 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  5/20/2026
Thursday
21 MAY 2026
PORTSMOUTH, NH 03803 weather forecast Day 1, 0 hours 2 AM 61° 60° Mostly Cloudy 5%

0% Thunder
( 0% severe)
NNW   7 51% 43°
Low 56° PORTSMOUTH, NH 03803 weather forecast Day 1, 3 hours 5 AM 57° 57° Mostly Cloudy N   5 55% 41°
High 65° PORTSMOUTH, NH 03803 weather forecast Day 1, 6 hours 8 AM 57° 57° Mostly Cloudy 4%

0% Thunder
( 0% severe)
N   3 51% 39°

Mostly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 1, 9 hours 11 AM 61° 62° Mostly Cloudy E   3 42% 38°
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 2 PM 62° 62° Mostly Cloudy 0%

0% Thunder
( 0% severe)
SSE   6 39% 37°
PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 5 PM 63° 63° Mostly Cloudy S   7 39% 38°
PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 8 PM 58° 58° Mostly Cloudy 0%

0% Thunder
( 0% severe)
WSW   3 49% 39°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 11 PM 52° 52° Partly Cloudy N   3 61% 39°
Friday
22 MAY 2026
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 2 AM 48° 47° Clear 0%

0% Thunder
( 0% severe)
N   3 60% 35°
Low 45° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 5 AM 45° 44° Partly Cloudy N   3 65% 34°
High 65° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 8 AM 53° 53° Partly Cloudy 0%

0% Thunder
( 0% severe)
N   3 50% 35°

Partly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 11 AM 61° 62° Partly Cloudy ENE   3 35% 33°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 2 PM 63° 63° Partly Cloudy 0%

0% Thunder
( 0% severe)
SE   8 34% 34°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 5 PM 62° 61° Partly Cloudy SSE   9 36% 35°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 8 PM 56° 55° Partly Cloudy 0%

0% Thunder
( 0% severe)
S   6 49% 37°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 11 PM 51° 51° Partly Cloudy   CALM 59% 37°

PORTSMOUTH, NH extended weather forecast

Saturday
23 MAY 2026
Sunday
24 MAY 2026
Monday
25 MAY 2026
Tuesday
26 MAY 2026
Wednesday
27 MAY 2026
Low 43° Low 45° Low 44° Low 51° Low 56°
High 64° High 56° High 62° High 72° High 70°
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
Mostly Cloudy
49% Rain
Overcast
67% Rain
Overcast
22% Rain
Partly Cloudy
27% Rain
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