PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

6:55 PM EDT AUG 10, 2026
Broken Clouds
75°F
Feels Like: 75°F
Dewpoint: 66°F
Rel. Hum.: 74%
Visibility: 10 miles
Wind: SE at 8 mph
Pressure: 29.85 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 cloudy this evening, then becoming partly cloudy. Isolated showers. Lows in the upper 60s. Light and variable winds. Chance of rain 20 percent.
TUESDAY
Mostly sunny. Warm with highs in the upper 80s. West winds around 10 mph.
TUESDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 60s. Northwest winds around 10 mph in the evening, becoming light and variable.
WEDNESDAY
Mostly sunny. Highs in the lower 80s. Light and variable winds.
WEDNESDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 60s. Light and variable winds.
THURSDAY
Partly sunny with a 40 percent chance of showers. Highs around 80.
THURSDAY NIGHT
Partly cloudy. A chance of showers in the evening. Lows in the lower 60s. Chance of rain 40 percent.
FRIDAY
Mostly sunny. Highs around 80.
FRIDAY NIGHT
Mostly clear. Lows in the upper 50s.
SATURDAY
Mostly sunny. Highs in the upper 70s.
SATURDAY NIGHT
Mostly clear. Lows in the upper 50s.
SUNDAY
Mostly sunny. Highs in the upper 70s.
SUNDAY NIGHT
Partly cloudy with a 40 percent chance of showers. 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 AM EDT  8/10/2026
Monday
10 AUG 2026
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 2 PM 82° 83° Clear 1%

0% Thunder
( 3% severe)
SSE   9 53% 63°
High 83° PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 5 PM 81° 83° Partly Cloudy SSE   10 56% 64°
Increasing Clouds

Chance of Rain

PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 8 PM 75° 75° Mostly Cloudy 23%
RAIN
.1–.25 in
0% Thunder
( 28% severe)
SSE   7 66% 63°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 11 PM 72° 72° Mostly Cloudy SSW   6 79% 65°
Tuesday
11 AUG 2026
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 2 AM 70° 70° Partly Cloudy 6%

0% Thunder
( 3% severe)
WNW   6 87% 66°
Low 68° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 5 AM 68° 68° Partly Cloudy WSW   7 90% 65°
High 88° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 8 AM 73° 73° Clear 1%

0% Thunder
( 1% severe)
W   9 79% 66°

Partly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 11 AM 82° 84° Partly Cloudy WNW   12 55% 64°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 2 PM 86° 85° Partly Cloudy 2%

0% Thunder
( 5% severe)
WNW   12 40% 59°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 5 PM 85° 84° Clear WNW   12 37% 56°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 8 PM 76° 78° Clear 1%

0% Thunder
( 1% severe)
NW   7 50% 56°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 11 PM 70° 70° Partly Cloudy WNW   6 63% 57°
Wednesday
12 AUG 2026
PORTSMOUTH, NH 03803 weather forecast Day 3, 0 hours 2 AM 66° 66° Mostly Cloudy 1%

0% Thunder
( 0% severe)
WNW   5 73% 57°
Low 63° PORTSMOUTH, NH 03803 weather forecast Day 3, 3 hours 5 AM 63° 64° Mostly Cloudy WNW   5 81% 57°
High 85° PORTSMOUTH, NH 03803 weather forecast Day 3, 6 hours 8 AM 69° 69° Clear 2%

0% Thunder
( 1% severe)
WNW   5 70% 59°

Partly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 3, 9 hours 11 AM 80° 80° Clear WNW   5 45% 57°
PORTSMOUTH, NH 03803 weather forecast Day 3, 15 hours 2 PM 82° 81° Partly Cloudy 1%

0% Thunder
( 14% severe)
WSW   7 40% 55°
PORTSMOUTH, NH 03803 weather forecast Day 3, 18 hours 5 PM 81° 81° Partly Cloudy S   8 42% 56°
PORTSMOUTH, NH 03803 weather forecast Day 3, 21 hours 8 PM 73° 73° Partly Cloudy     S   6 59% 58°

PORTSMOUTH, NH extended weather forecast

Thursday
13 AUG 2026
Friday
14 AUG 2026
Saturday
15 AUG 2026
Sunday
16 AUG 2026
Monday
17 AUG 2026
Low 62° Low 60° Low 56° Low 59° Low 63°
High 82° High 76° High 76° High 79° High 79°
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
Partly Cloudy
20% Rain
Partly Cloudy
29% Rain
Clear
17% Rain
Mostly Cloudy
21% Rain
Mostly Cloudy
49% Rain
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