PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

2:55 AM EDT JUL 14, 2026
Broken Clouds
73°F
Feels Like: 73°F
Dewpoint: 63°F
Rel. Hum.: 71%
Visibility: 10 miles
Wind: SW at 5 mph
Pressure: 29.96 inches
Last 72 hours

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PORTSMOUTH, NH 03803
Weather Forecast

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Snow Depth pages
REST OF TONIGHT
Partly cloudy. Lows in the upper 60s. Southwest winds around 10 mph.
TUESDAY
Partly sunny. Hot with highs in the mid 90s. West winds around 10 mph. Heat index values up to 101 in the afternoon.
TUESDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Humid with lows in the mid 70s. West winds around 10 mph. Heat index values up to 100 early in the evening.
WEDNESDAY
Partly sunny. Hot with highs in the lower 90s. Northwest winds around 10 mph with gusts up to 25 mph.
WEDNESDAY NIGHT
Mostly clear. Lows in the upper 60s. Northwest winds around 10 mph with gusts up to 20 mph in the evening, becoming light and variable.
THURSDAY
Mostly sunny. Hot with highs around 90.
THURSDAY NIGHT
Partly cloudy. Lows in the mid 60s.
FRIDAY
Mostly sunny. Highs in the lower 80s.
FRIDAY NIGHT
Mostly clear. Lows in the lower 60s.
SATURDAY
Partly sunny. Highs in the mid 80s.
SATURDAY NIGHT
Partly cloudy with a 40 percent chance of showers. Lows in the lower 60s.
SUNDAY
Partly sunny with a 40 percent chance of showers. Highs in the lower 80s.
SUNDAY NIGHT
Partly cloudy with a 40 percent chance of showers. Lows in the mid 60s.

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  7/13/2026
Tuesday
14 JUL 2026
PORTSMOUTH, NH 03803 weather forecast Day 1, 0 hours 2 AM 72° 72° Partly Cloudy 1%

0% Thunder
( 1% severe)
SW   9 76% 64°
Low 69° PORTSMOUTH, NH 03803 weather forecast Day 1, 3 hours 5 AM 70° 70° Partly Cloudy WSW   9 76% 62°
High 98° PORTSMOUTH, NH 03803 weather forecast Day 1, 6 hours 8 AM 75° 75° Partly Cloudy 1%

0% Thunder
( 1% severe)
W   8 69% 64°

Partly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 1, 9 hours 11 AM 88° 90° Mostly Cloudy WSW   10 48% 66°
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 2 PM 95° 98° Partly Cloudy 1%

0% Thunder
( 9% severe)
WSW   14 39% 66°
PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 5 PM 97° 102° Partly Cloudy W   14 38% 67°
PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 8 PM 90° 95° Partly Cloudy 5%

0% Thunder
( 12% severe)
WSW   10 50% 69°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 11 PM 85° 88° Partly Cloudy W   9 57% 68°
Wednesday
15 JUL 2026
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 2 AM 81° 84° Mostly Cloudy 18%
RAIN
<.01 in
0% Thunder
( 13% severe)
W   8 65% 68°
Low 76° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 5 AM 77° 79° Mostly Cloudy W   8 71% 67°
High 93° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 8 AM 79° 81° Mostly Cloudy 8%

0% Thunder
( 3% severe)
WNW   9 69% 68°

Partly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 11 AM 88° 89° Partly Cloudy NW   13 43% 63°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 2 PM 91° 90° Partly Cloudy 1%

0% Thunder
( 7% severe)
WNW   15 32% 57°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 5 PM 91° 89° Partly Cloudy NW   14 29% 54°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 8 PM 82° 82° Clear 0%

0% Thunder
( 4% severe)
NW   8 41% 56°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 11 PM 74° 74° Partly Cloudy WNW   5 55% 57°

PORTSMOUTH, NH extended weather forecast

Thursday
16 JUL 2026
Friday
17 JUL 2026
Saturday
18 JUL 2026
Sunday
19 JUL 2026
Monday
20 JUL 2026
Low 64° Low 62° Low 59° Low 62° Low 66°
High 89° High 80° High 78° High 81° High 81°
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
12% Rain
Partly Cloudy
27% Rain
Mostly Cloudy
32% Rain
Mostly Cloudy
58% Rain
Partly Cloudy
25% Rain
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