PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

9:55 PM EDT JUL 31, 2026
Scattered Clouds
72°F
Feels Like: 72°F
Dewpoint: 64°F
Rel. Hum.: 76%
Visibility: 10 miles
Wind: S at 6 mph
Pressure: 29.90 inches
Last 72 hours

Local Area Snow Depth

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PORTSMOUTH, NH 03803
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TONIGHT
Mostly clear. Patchy fog after midnight. Humid with lows in the lower 60s. Light and variable winds.
SATURDAY
Patchy fog in the morning. Partly sunny. Humid with highs in the lower 80s. Light and variable winds.
SATURDAY NIGHT
Mostly cloudy. Humid with lows in the mid 60s. Light and variable winds.
SUNDAY
Mostly cloudy in the morning, then becoming partly sunny. Humid with highs in the lower 80s. South winds around 10 mph.
SUNDAY NIGHT
Partly cloudy in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the mid 60s. Chance of rain 40 percent.
MONDAY
Showers likely. A chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 70 percent.
MONDAY NIGHT
Showers likely with a chance of thunderstorms in the evening, then partly cloudy with a chance of showers after midnight. Lows in the mid 60s. Chance of rain 70 percent.
TUESDAY
Partly sunny with a 30 percent chance of showers. Highs in the lower 80s.
TUESDAY NIGHT
Partly cloudy. Lows in the lower 60s.
WEDNESDAY
Partly sunny with a 40 percent chance of showers. Highs in the lower 80s.
WEDNESDAY NIGHT
Partly cloudy. A chance of showers in the evening. Lows in the upper 60s. Chance of rain 40 percent.
THURSDAY
Partly sunny. A chance of showers in the afternoon. Warm with highs in the mid 80s. Chance of rain 40 percent.

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 AM EDT  7/31/2026
Friday
31 JUL 2026
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 2 PM 79° 81° Partly Cloudy 13%
RAIN
<.01 in
0% Thunder
( 21% severe)
S   6 58% 63°
High 80° PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 5 PM 78° 80° Partly Cloudy S   7 62% 64°
Partly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 8 PM 72° 72° Partly Cloudy 6%

0% Thunder
( 14% severe)
S   6 76% 64°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 11 PM 67° 67° Partly Cloudy SW   2 90% 64°
Saturday
1 AUG 2026
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 2 AM 64° 66° Partly Cloudy 1%

0% Thunder
( 0% severe)
  CALM 100% 64°
Low 62° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 5 AM 62° 63° Partly Cloudy   CALM 100% 62°
High 83° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 8 AM 68° 68° Partly Cloudy 1%

0% Thunder
( 1% severe)
  CALM 87% 64°

Partly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 11 AM 79° 81° Partly Cloudy ESE   3 64% 66°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 2 PM 80° 82° Partly Cloudy 1%

0% Thunder
( 3% severe)
ESE   8 60% 65°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 5 PM 78° 80° Partly Cloudy SE   9 64% 65°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 8 PM 73° 73° Mostly Cloudy 0%

0% Thunder
( 1% severe)
SE   6 76% 65°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 11 PM 69° 69° Mostly Cloudy S   5 90% 66°
Sunday
2 AUG 2026
PORTSMOUTH, NH 03803 weather forecast Day 3, 0 hours 2 AM 68° 68° Mostly Cloudy 0%

0% Thunder
( 0% severe)
SSW   5 93% 66°
Low 66° PORTSMOUTH, NH 03803 weather forecast Day 3, 3 hours 5 AM 67° 67° Mostly Cloudy SSW   5 97% 66°
High 84° PORTSMOUTH, NH 03803 weather forecast Day 3, 6 hours 8 AM 71° 71° Mostly Cloudy 1%

0% Thunder
( 1% severe)
SSW   6 84% 66°

Mostly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 3, 9 hours 11 AM 81° 84° Mostly Cloudy S   8 65% 68°
PORTSMOUTH, NH 03803 weather forecast Day 3, 15 hours 2 PM 82° 85° Mostly Cloudy 5%

0% Thunder
( 2% severe)
S   13 63% 68°
PORTSMOUTH, NH 03803 weather forecast Day 3, 18 hours 5 PM 81° 84° Mostly Cloudy SSE   13 65% 68°
PORTSMOUTH, NH 03803 weather forecast Day 3, 21 hours 8 PM 76° 77° Mostly Cloudy     S   9 74% 67°

PORTSMOUTH, NH extended weather forecast

Monday
3 AUG 2026
Tuesday
4 AUG 2026
Wednesday
5 AUG 2026
Thursday
6 AUG 2026
Friday
7 AUG 2026
Low 68° Low 65° Low 63° Low 65° Low 68°
High 81° High 84° High 85° High 83° High 88°
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 <!--SEARCHED_TOWN_NAME--> weather forecast Day 8
Overcast
83% Rain
Mostly Cloudy
68% Rain
Partly Cloudy
19% Rain
Overcast
38% Rain
Mostly Cloudy
49% Rain
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