PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

1:55 AM EDT JUN 11, 2026
Broken Clouds
73°F
Feels Like: 73°F
Dewpoint: 66°F
Rel. Hum.: 79%
Visibility: 10 miles
Wind: WSW at 5 mph
Pressure: 29.70 inches
Last 72 hours

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PORTSMOUTH, NH 03803
Weather Forecast

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Snow Depth pages
REST OF TONIGHT
Cloudy with a chance of showers with a slight chance of thunderstorms. Patchy fog. Lows in the mid 60s. Light and variable winds. Chance of rain 40 percent.
THURSDAY
Patchy fog in the morning. Partly sunny with a 20 percent chance of showers. Warm with highs in the upper 80s. Light and variable winds. Heat index values in the mid 90s in the afternoon.
THURSDAY NIGHT
Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Patchy fog. Humid with lows in the mid 60s. Light and variable winds. Chance of rain 30 percent.
FRIDAY
Partly sunny. Patchy fog in the morning. Humid with highs in the lower 80s. Light and variable winds.
FRIDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers. Lows around 60. Light and variable winds. Chance of rain 50 percent.
SATURDAY
Mostly sunny. A chance of showers in the morning. Warm with highs in the upper 80s. Chance of rain 40 percent.
SATURDAY NIGHT
Mostly clear. Lows in the lower 60s.
SUNDAY
Partly sunny. Warm with highs in the mid 80s.
SUNDAY NIGHT
Partly cloudy in the evening. A chance of showers in the evening, then showers likely after midnight. Lows in the lower 60s. Chance of rain 70 percent.
MONDAY
Showers likely in the morning. Highs in the lower 80s. Chance of rain 60 percent.
MONDAY NIGHT
Partly cloudy. Lows in the upper 50s.
TUESDAY
Partly sunny. Highs in the upper 70s.
TUESDAY NIGHT
Partly cloudy. Lows in the upper 50s.

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  6/10/2026
Thursday
11 JUN 2026
PORTSMOUTH, NH 03803 weather forecast Day 1, 0 hours 2 AM 70° 70° Mostly Cloudy 28%
RAIN
<.01 in
0% Thunder
( 11% severe)
SW   5 90% 67°
Low 67° PORTSMOUTH, NH 03803 weather forecast Day 1, 3 hours 5 AM 68° 68° Mostly Cloudy SW   3 93% 66°
High 90° PORTSMOUTH, NH 03803 weather forecast Day 1, 6 hours 8 AM 72° 72° Partly Cloudy 14%
RAIN
<.01 in
0% Thunder
( 13% severe)
W   3 87% 68°

Mostly Cloudy

Chance of Rain

PORTSMOUTH, NH 03803 weather forecast Day 1, 9 hours 11 AM 84° 88° Mostly Cloudy WNW   5 63% 70°
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 2 PM 87° 92° Mostly Cloudy 39%
RAIN
1–2 in
0% Thunder
( 24% severe)
WNW   6 57% 70°
PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 5 PM 84° 90° Partly Cloudy NW   6 70% 73°
PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 8 PM 77° 79° Partly Cloudy 9%

0% Thunder
( 14% severe)
SE   1 79% 70°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 11 PM 71° 71° Partly Cloudy   CALM 93% 69°
Friday
12 JUN 2026
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 2 AM 69° 69° Partly Cloudy 13%
RAIN
<.01 in
0% Thunder
( 4% severe)
  CALM 93% 67°
Low 67° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 5 AM 67° 67° Partly Cloudy   CALM 93% 65°
High 84° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 8 AM 72° 72° Partly Cloudy 23%
RAIN
***
0% Thunder
( 8% severe)
  CALM 84% 67°

Partly Cloudy

Chance of Rain

PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 11 AM 81° 84° Partly Cloudy E   5 65% 68°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 2 PM 80° 83° Partly Cloudy 19%
RAIN
.1–.25 in
0% Thunder
( 16% severe)
ESE   8 67% 68°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 5 PM 76° 77° Partly Cloudy ESE   8 76% 68°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 8 PM 69° 69° Mostly Cloudy 37%
RAIN
<.01 in
0% Thunder
( 20% severe)
E   5 84% 64°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 11 PM 65° 65° Mostly Cloudy E   2 93% 63°

PORTSMOUTH, NH extended weather forecast

Saturday
13 JUN 2026
Sunday
14 JUN 2026
Monday
15 JUN 2026
Tuesday
16 JUN 2026
Wednesday
17 JUN 2026
Low 63° Low 61° Low 61° Low 57° Low 57°
High 80° High 77° High 77° High 73° 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
43% Rain
Mostly Cloudy
20% Rain
Overcast
39% Rain
Partly Cloudy
29% Rain
Mostly Cloudy
24% Rain
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