PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

11:55 AM EDT AUG 24, 2026
Few Clouds
81°F
Feels Like: 81°F
Dewpoint: 59°F
Rel. Hum.: 47%
Visibility: 10 miles
Wind: SSW at 9 mph
Pressure: 29.90 inches
Last 72 hours

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PORTSMOUTH, NH 03803
Weather Forecast

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TODAY
Areas of fog this morning. Mostly sunny. Visibility one quarter mile or less at times this morning. Highs in the lower 80s. Southwest winds around 10 mph.
TONIGHT
Mostly clear. Lows in the upper 50s. Southwest winds around 10 mph in the evening, becoming light and variable.
TUESDAY
Mostly sunny. Highs in the lower 80s. Light and variable winds.
TUESDAY NIGHT
Mostly clear. Lows around 60. Light and variable winds.
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.
THURSDAY
Partly sunny. A chance of showers in the afternoon. Highs in the lower 80s. Chance of rain 30 percent.
THURSDAY NIGHT
Partly cloudy with a chance of showers. Lows in the mid 60s. Chance of rain 50 percent.
FRIDAY
Partly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 40 percent.
FRIDAY NIGHT
Partly cloudy. A chance of showers and thunderstorms in the evening. Lows in the lower 60s. Chance of rain 40 percent.
SATURDAY
Mostly sunny. Highs in the lower 80s.
SATURDAY NIGHT
Partly cloudy. Lows in the upper 50s.
SUNDAY
Partly sunny. Highs around 80.

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  8/23/2026
Monday
24 AUG 2026
PORTSMOUTH, NH 03803 weather forecast Day 1, 0 hours 2 AM 66° 66° Mostly Cloudy 2%

0% Thunder
( 0% severe)
SSW   2 100% 66°
Low 63° PORTSMOUTH, NH 03803 weather forecast Day 1, 3 hours 5 AM 64° 66° Mostly Cloudy WSW   2 100% 64°
High 84° PORTSMOUTH, NH 03803 weather forecast Day 1, 6 hours 8 AM 65° 65° Partly Cloudy 1%

0% Thunder
( 1% severe)
WSW   3 97% 64°

Partly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 1, 9 hours 11 AM 76° 78° Clear SW   7 60% 61°
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 2 PM 81° 81° Partly Cloudy 1%

0% Thunder
( 7% severe)
SSW   10 44% 57°
PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 5 PM 80° 80° Clear SW   10 41% 54°
PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 8 PM 72° 72° Clear 5%

0% Thunder
( 3% severe)
SW   7 57% 56°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 11 PM 65° 65° Partly Cloudy SW   6 78% 58°
Tuesday
25 AUG 2026
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 2 AM 61° 62° Clear 2%

0% Thunder
( 1% severe)
SW   3 93% 59°
Low 58° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 5 AM 59° 59° Partly Cloudy WSW   5 96% 58°
High 83° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 8 AM 64° 64° Clear 0%

0% Thunder
( 2% severe)
W   6 78% 57°

Partly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 11 AM 75° 75° Clear WSW   8 52% 56°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 2 PM 80° 80° Partly Cloudy 3%

0% Thunder
( 10% severe)
WSW   9 44% 56°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 5 PM 79° 80° Partly Cloudy WSW   9 44% 55°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 8 PM 72° 72° Clear 0%

0% Thunder
( 5% severe)
W   6 61% 58°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 11 PM 65° 65° Partly Cloudy W   6 81% 59°

PORTSMOUTH, NH extended weather forecast

Wednesday
26 AUG 2026
Thursday
27 AUG 2026
Friday
28 AUG 2026
Saturday
29 AUG 2026
Sunday
30 AUG 2026
Low 59° Low 61° Low 65° Low 63° Low 62°
High 78° High 82° High 79° High 79° High 82°
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
14% Rain
Partly Cloudy
26% Rain
Overcast
62% Rain
Mostly Cloudy
35% Rain
Mostly Cloudy
32% Rain
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