PORTSMOUTH, NH 03804 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

3:55 AM EDT JUL 16, 2025
Clear
70°F
Feels Like: 70°F
Dewpoint: 70°F
Rel. Hum.: 100%
Visibility: 8 miles
Wind: NW at 3 mph
Pressure: 30.01 inches
Last 72 hours

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PORTSMOUTH, NH 03804
Weather Forecast

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TODAY
Patchy fog this morning. Mostly sunny. Warm with highs in the upper 80s. Light and variable winds, becoming southeast around 10 mph this afternoon. Heat index values in the upper 90s.
TONIGHT
Mostly clear in the evening, then becoming partly cloudy. Humid with lows in the lower 70s. South winds around 10 mph in the evening, becoming light and variable. Heat index values in the mid 90s early in the evening.
THURSDAY
Mostly cloudy in the morning, then becoming partly sunny. Scattered showers. Isolated thunderstorms in the morning, then scattered thunderstorms in the afternoon. Warm with highs in the upper 80s. South winds around 10 mph. Chance of rain 40 percent. Heat index values in the mid 90s.
THURSDAY NIGHT
Partly cloudy with a chance of showers and scattered thunderstorms in the evening, then mostly clear after midnight. Humid with lows in the lower 70s. Light and variable winds. Chance of rain 40 percent. Heat index values in the lower 90s early in the evening.
FRIDAY
Mostly sunny. Highs in the lower 80s. Northwest winds around 10 mph.
FRIDAY NIGHT
Mostly clear. Lows around 60.
SATURDAY
Partly sunny. Highs around 80.
SATURDAY NIGHT
Partly cloudy. Lows in the mid 60s.
SUNDAY
Mostly cloudy in the morning, then becoming partly sunny. A 50 percent chance of showers. Highs in the upper 70s.
SUNDAY NIGHT
Partly cloudy. A chance of showers in the evening. Lows in the lower 60s. Chance of rain 50 percent.
MONDAY
Partly sunny. Highs in the upper 70s.
MONDAY NIGHT
Partly cloudy. Lows in the lower 60s.
TUESDAY
Partly sunny. Highs in the upper 70s.

Visible Weather Satellite
PORTSMOUTH, NH 03804
Infrared Weather Satellite
PORTSMOUTH, NH 03804
NEXRAD Weather Radar
PORTSMOUTH, NH 03804

PORTSMOUTH, NH 3 hourly weather forecast

weather forecast created  8:00 PM EDT  7/15/2025
Wednesday
16 JUL 2025
PORTSMOUTH, NH 03804 weather forecast Day 1, 0 hours 2 AM 72° 72° Clear 0%

0% Thunder
( 2% severe)
WSW   2 90% 69°
Low 69° PORTSMOUTH, NH 03804 weather forecast Day 1, 3 hours 5 AM 70° 70° Partly Cloudy WSW   1 93% 68°
High 90° PORTSMOUTH, NH 03804 weather forecast Day 1, 6 hours 8 AM 75° 75° Partly Cloudy 0%

0% Thunder
( 1% severe)
  CALM 82% 69°

Clear



PORTSMOUTH, NH 03804 weather forecast Day 1, 9 hours 11 AM 86° 90° Clear S   3 57% 69°
PORTSMOUTH, NH 03804 weather forecast Day 1, 12 hours 2 PM 88° 93° Clear 1%

0% Thunder
( 9% severe)
SSE   7 54% 69°
PORTSMOUTH, NH 03804 weather forecast Day 1, 15 hours 5 PM 87° 91° Clear SSE   9 55% 69°
PORTSMOUTH, NH 03804 weather forecast Day 1, 18 hours 8 PM 81° 84° Partly Cloudy 1%

0% Thunder
( 8% severe)
S   7 69% 70°
PORTSMOUTH, NH 03804 weather forecast Day 1, 21 hours 11 PM 78° 80° Partly Cloudy SSW   6 79% 71°
Thursday
17 JUL 2025
PORTSMOUTH, NH 03804 weather forecast Day 2, 0 hours 2 AM 75° 75° Partly Cloudy 6%

0% Thunder
( 4% severe)
SSW   6 87% 71°
Low 72° PORTSMOUTH, NH 03804 weather forecast Day 2, 3 hours 5 AM 74° 74° Mostly Cloudy S   6 90% 71°
High 88° PORTSMOUTH, NH 03804 weather forecast Day 2, 6 hours 8 AM 76° 76° Mostly Cloudy 29%
RAIN
.01–.1 in
0% Thunder
( 18% severe)
SSW   7 87% 72°

Mostly Cloudy

Chance of Rain

PORTSMOUTH, NH 03804 weather forecast Day 2, 9 hours 11 AM 82° 87° Mostly Cloudy SSW   9 74% 73°
PORTSMOUTH, NH 03804 weather forecast Day 2, 12 hours 2 PM 85° 92° Mostly Cloudy 42%
RAIN
.5–1 in
0% Thunder
( 32% severe)
S   10 67% 73°
PORTSMOUTH, NH 03804 weather forecast Day 2, 15 hours 5 PM 85° 91° Partly Cloudy SSW   10 65% 72°
PORTSMOUTH, NH 03804 weather forecast Day 2, 18 hours 8 PM 81° 85° Partly Cloudy 10%
RAIN
<.01 in
0% Thunder
( 12% severe)
SSW   8 74% 72°
PORTSMOUTH, NH 03804 weather forecast Day 2, 21 hours 11 PM 78° 80° Partly Cloudy SW   7 82% 72°

PORTSMOUTH, NH extended weather forecast

BAD DAY
BAD DATE
BAD DAY
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Low 72° Low 70° Low 59° Low 61° Low 63°
High 88° High 81° High 81° High 80° High 77°
PORTSMOUTH, NH 03804 weather forecast Day 3 PORTSMOUTH, NH 03804 weather forecast Day 4 PORTSMOUTH, NH 03804 weather forecast Day 5 PORTSMOUTH, NH 03804 weather forecast Day 6 PORTSMOUTH, NH 03804 weather forecast Day 7
Overcast
57% Rain
Partly Cloudy
13% Rain
Partly Cloudy
11% Rain
Mostly Cloudy
48% Rain
Mostly Cloudy
65% Rain
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