PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

4:55 AM EDT JUL 19, 2026
Broken Clouds
72°F
Feels Like: 72°F
Dewpoint: 66°F
Rel. Hum.: 81%
Visibility: 10 miles
Wind: W at 10 mph
Pressure: 29.51 inches
Last 72 hours

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PORTSMOUTH, NH 03803
Weather Forecast

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Snow Depth pages
TODAY
Mostly sunny. Highs in the upper 70s. Northwest winds 10 to 15 mph with gusts up to 25 mph.
TONIGHT
Clear. Lows in the upper 50s. Northwest winds around 10 mph in the evening, becoming light and variable.
MONDAY
Mostly sunny. Highs in the lower 80s. Light and variable winds.
MONDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 60s. Light and variable winds.
TUESDAY
Partly sunny in the morning, then becoming mostly cloudy. Highs in the upper 70s. South winds around 10 mph. Gusts up to 25 mph in the afternoon.
TUESDAY NIGHT
Showers with a chance of thunderstorms. Lows in the lower 60s. Chance of rain 90 percent.
WEDNESDAY
Showers. A chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 90 percent.
WEDNESDAY NIGHT
Showers likely with a chance of thunderstorms in the evening, then partly cloudy with a chance of showers after midnight. Lows in the lower 60s. Chance of rain 70 percent.
THURSDAY
Partly sunny. A chance of showers in the morning. Highs around 80. Chance of rain 30 percent.
THURSDAY NIGHT
Mostly clear. Lows around 60.
FRIDAY
Mostly sunny. Highs around 80.
FRIDAY NIGHT
Mostly clear. Lows in the lower 60s.
SATURDAY
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  7/18/2026
Sunday
19 JUL 2026
PORTSMOUTH, NH 03803 weather forecast Day 1, 0 hours 2 AM 71° 71° Mostly Cloudy 3%

0% Thunder
( 3% severe)
WSW   10 97% 70°
Low 66° PORTSMOUTH, NH 03803 weather forecast Day 1, 3 hours 5 AM 67° 67° Mostly Cloudy W   12 93% 65°
High 81° PORTSMOUTH, NH 03803 weather forecast Day 1, 6 hours 8 AM 67° 67° Clear 0%

0% Thunder
( 0% severe)
WNW   14 70% 57°

Clear



PORTSMOUTH, NH 03803 weather forecast Day 1, 9 hours 11 AM 75° 75° Clear WNW   16 48% 54°
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 2 PM 78° 79° Clear 0%

0% Thunder
( 1% severe)
WNW   15 40% 52°
PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 5 PM 78° 78° Clear WNW   14 35% 48°
PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 8 PM 72° 72° Clear 0%

0% Thunder
( 1% severe)
WNW   8 46% 50°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 11 PM 64° 64° Clear WNW   6 60% 50°
Monday
20 JUL 2026
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 2 AM 61° 61° Clear 0%

0% Thunder
( 0% severe)
W   6 67% 50°
Low 58° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 5 AM 58° 57° Clear W   6 75% 50°
High 84° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 8 AM 66° 66° Clear 0%

0% Thunder
( 0% severe)
W   6 63% 53°

Clear



PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 11 AM 77° 78° Clear W   7 39% 50°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 2 PM 81° 80° Partly Cloudy 0%

0% Thunder
( 2% severe)
WSW   8 35% 51°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 5 PM 80° 80° Clear S   9 39% 53°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 8 PM 73° 73° Clear 0%

0% Thunder
( 2% severe)
S   7 57% 57°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 11 PM 67° 67° Partly Cloudy S   6 70% 57°

PORTSMOUTH, NH extended weather forecast

Tuesday
21 JUL 2026
Wednesday
22 JUL 2026
Thursday
23 JUL 2026
Friday
24 JUL 2026
Saturday
25 JUL 2026
Low 62° Low 65° Low 63° Low 57° Low 60°
High 78° High 81° High 76° High 79° High 77°
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
48% Rain
Overcast
99% Rain
Partly Cloudy
29% Rain
Partly Cloudy
24% Rain
Partly Cloudy
20% Rain
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