PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

8:55 AM EDT JUN 26, 2026
Broken Clouds
64°F
Feels Like: 64°F
Dewpoint: 61°F
Rel. Hum.: 90%
Visibility: 10 miles
Wind: SE at 8 mph
Pressure: 30.07 inches
Last 72 hours

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PORTSMOUTH, NH 03803
Weather Forecast

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TODAY
Mostly cloudy this morning, then becoming partly sunny. A chance of showers. A chance of thunderstorms this afternoon. Some thunderstorms may produce gusty winds and small hail this afternoon. Highs in the mid 70s. Light and variable winds. Chance of rain 50 percent.
TONIGHT
Mostly cloudy. A chance of showers and thunderstorms in the evening. Some thunderstorms may produce gusty winds and small hail in the evening. Lows in the upper 50s. Light and variable winds. Chance of rain 50 percent.
SATURDAY
Mostly cloudy in the morning, then becoming partly sunny. Highs in the mid 70s. Light and variable winds.
SATURDAY NIGHT
Partly cloudy. Lows in the upper 50s. Light and variable winds.
SUNDAY
Partly sunny. Highs around 80. Light and variable winds.
SUNDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows around 60.
MONDAY
Partly sunny. Highs in the lower 80s.
MONDAY NIGHT
Partly cloudy. Lows in the lower 60s.
TUESDAY
Partly sunny. Highs in the lower 80s.
TUESDAY NIGHT
Partly cloudy. A chance of showers after midnight. Lows in the mid 60s. Chance of rain 30 percent.
WEDNESDAY
Partly sunny. A chance of showers in the morning. Highs in the lower 80s. Chance of rain 30 percent.
WEDNESDAY NIGHT
Partly cloudy. Lows in the upper 60s.
THURSDAY
Partly sunny. Warm with highs in the upper 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  6/25/2026
Friday
26 JUN 2026
PORTSMOUTH, NH 03803 weather forecast Day 1, 0 hours 2 AM 65° 65° Mostly Cloudy 62%
RAIN
.1–.25 in
0% Thunder
( 9% severe)
WSW   3 78% 58°
Low 61° PORTSMOUTH, NH 03803 weather forecast Day 1, 3 hours 5 AM 62° 63° Mostly Cloudy NW   2 90% 59°
High 77° PORTSMOUTH, NH 03803 weather forecast Day 1, 6 hours 8 AM 64° 65° Mostly Cloudy 77%
RAIN
.5–1 in
0% Thunder
( 12% severe)
S   3 87% 60°

Mostly Cloudy

Rain Likely

PORTSMOUTH, NH 03803 weather forecast Day 1, 9 hours 11 AM 70° 70° Mostly Cloudy SSE   8 76% 62°
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 2 PM 73° 73° Mostly Cloudy 39%
RAIN
.25–.5 in
0% Thunder
( 31% severe)
S   8 73% 64°
PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 5 PM 74° 74° Partly Cloudy S   6 79% 67°
PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 8 PM 70° 70° Mostly Cloudy 11%
RAIN
<.01 in
0% Thunder
( 10% severe)
  CALM 84% 65°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 11 PM 65° 65° Mostly Cloudy WSW   1 93% 63°
Saturday
27 JUN 2026
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 2 AM 63° 64° Mostly Cloudy 1%

0% Thunder
( 0% severe)
W   2 93% 61°
Low 61° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 5 AM 61° 62° Mostly Cloudy   CALM 97% 60°
High 78° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 8 AM 66° 66° Mostly Cloudy 10%
RAIN
<.01 in
0% Thunder
( 2% severe)
  CALM 84% 61°

Mostly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 11 AM 74° 74° Mostly Cloudy   CALM 66% 62°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 2 PM 74° 74° Mostly Cloudy 9%

0% Thunder
( 7% severe)
ESE   6 66% 62°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 5 PM 73° 73° Partly Cloudy ESE   7 71% 63°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 8 PM 68° 68° Mostly Cloudy 11%
RAIN
<.01 in
0% Thunder
( 8% severe)
ESE   3 81% 62°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 11 PM 63° 64° Mostly Cloudy   CALM 93% 61°

PORTSMOUTH, NH extended weather forecast

BAD DAY
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Low 63° Low 61° Low 59° Low 62° Low 62°
High 78° High 79° High 82° High 83° High 80°
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
23% Rain
Partly Cloudy
15% Rain
Partly Cloudy
18% Rain
Partly Cloudy
12% Rain
Mostly Cloudy
15% Rain
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