PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

9:55 AM EDT JUL 2, 2026
Scattered Clouds
86°F
Feels Like: 93°F
Dewpoint: 73°F
Rel. Hum.: 65%
Visibility: 10 miles
Wind: W at 10 mph
Pressure: 29.88 inches
Last 72 hours

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PORTSMOUTH, NH 03803
Weather Forecast

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TODAY
Mostly sunny. Hot with highs in the upper 90s. Light and variable winds. Heat index values up to 107.
TONIGHT
Clear with lows in the mid 70s. Light and variable winds. Heat index values up to 105 early in the evening.
FRIDAY
Mostly sunny. Hot with highs in the upper 90s. Light and variable winds, becoming west around 10 mph in the afternoon. Heat index values up to 106.
FRIDAY NIGHT
Mostly clear. Humid with lows in the mid 70s. Light and variable winds. Heat index values up to 103 early in the evening.
INDEPENDENCE DAY
Partly sunny. A chance of showers in the afternoon. Hot with highs in the lower 90s. Light and variable winds. Chance of rain 50 percent. Heat index values in the mid 90s.
SATURDAY NIGHT
Partly cloudy. A chance of showers in the evening. Lows in the upper 60s. Chance of rain 40 percent.
SUNDAY
Partly sunny. Highs in the lower 80s.
SUNDAY NIGHT
Partly cloudy. Lows in the lower 60s.
MONDAY
Partly sunny in the morning, then becoming mostly cloudy. A 30 percent chance of showers. Highs in the mid 70s.
MONDAY NIGHT
Partly cloudy. A chance of showers in the evening. Lows in the lower 60s. Chance of rain 30 percent.
TUESDAY
Partly sunny. Highs in the upper 70s.
TUESDAY NIGHT
Partly cloudy. Lows in the lower 60s.
WEDNESDAY
Partly sunny. Highs in the upper 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  7/ 1/2026
Thursday
2 JUL 2026
PORTSMOUTH, NH 03803 weather forecast Day 1, 0 hours 2 AM 78° 80° Mostly Cloudy 11%
RAIN
<.01 in
0% Thunder
( 2% severe)
WSW   7 88% 74°
Low 74° PORTSMOUTH, NH 03803 weather forecast Day 1, 3 hours 5 AM 75° 75° Partly Cloudy WSW   7 94% 73°
High 102° PORTSMOUTH, NH 03803 weather forecast Day 1, 6 hours 8 AM 82° 88° Partly Cloudy 4%

0% Thunder
( 3% severe)
W   6 77% 74°

Partly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 1, 9 hours 11 AM 96° 107° Partly Cloudy W   7 49% 74°
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 2 PM 99° 109° Partly Cloudy 8%

0% Thunder
( 20% severe)
W   8 42% 72°
PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 5 PM 99° 110° Partly Cloudy W   7 44% 73°
PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 8 PM 91° 101° Clear 3%

0% Thunder
( 15% severe)
WSW   6 58% 74°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 11 PM 84° 90° Clear W   7 67% 72°
Friday
3 JUL 2026
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 2 AM 80° 83° Clear 2%

0% Thunder
( 0% severe)
W   6 74% 71°
Low 77° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 5 AM 77° 79° Partly Cloudy W   7 76% 69°
High 100° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 8 AM 83° 88° Clear 1%

0% Thunder
( 1% severe)
WNW   7 70% 72°

Clear



PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 11 AM 95° 103° Clear W   8 46% 71°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 2 PM 99° 105° Partly Cloudy 11%
RAIN
<.01 in
0% Thunder
( 15% severe)
W   9 37% 68°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 5 PM 98° 104° Clear W   9 39% 69°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 8 PM 89° 96° Clear 4%

0% Thunder
( 11% severe)
W   6 57% 72°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 11 PM 81° 84° Partly Cloudy W   5 67% 69°

PORTSMOUTH, NH extended weather forecast

Saturday
4 JUL 2026
Sunday
5 JUL 2026
Monday
6 JUL 2026
Tuesday
7 JUL 2026
Wednesday
8 JUL 2026
Low 73° Low 66° Low 62° Low 60° Low 57°
High 91° High 83° High 80° High 74° 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
Partly Cloudy
36% Rain
Partly Cloudy
17% Rain
Mostly Cloudy
13% Rain
Mostly Cloudy
25% Rain
Partly Cloudy
24% Rain
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