PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

12:55 AM EDT OCT 13, 2026
Overcast
59°F
Feels Like: 56°F
Dewpoint: 52°F
Rel. Hum.: 78%
Visibility: 10 miles
Wind: ENE at 16 mph, gusts to 25
Pressure: 29.89 inches
Last 72 hours

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PORTSMOUTH, NH 03803
Weather Forecast

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Snow Depth pages
TONIGHT
Partly cloudy this evening, then cloudy with rain likely after midnight. Lows in the upper 40s. Light and variable winds, becoming northeast around 10 mph with gusts up to 25 mph after midnight. Chance of rain 70 percent.
TUESDAY
Rain. Highs in the mid 50s. East winds around 10 mph with gusts up to 20 mph. Chance of rain near 100 percent.
TUESDAY NIGHT
Cloudy. Rain, mainly in the evening. Lows in the mid 50s. South winds around 10 mph in the evening, becoming light and variable. Chance of rain 80 percent.
WEDNESDAY
Partly sunny. Highs in the lower 70s. West winds around 10 mph.
WEDNESDAY NIGHT
Partly cloudy. Lows in the upper 40s. Light and variable winds, becoming northwest around 10 mph after midnight.
THURSDAY
Mostly sunny. Highs in the lower 60s.
THURSDAY NIGHT
Partly cloudy. Lows in the lower 40s.
FRIDAY
Showers. Highs around 60. Chance of rain 90 percent.
FRIDAY NIGHT
Showers, mainly in the evening. Lows in the lower 40s. Chance of rain 80 percent.
SATURDAY
Partly sunny. Highs in the lower 50s.
SATURDAY NIGHT
Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 30s.
SUNDAY
Mostly sunny. Highs in the lower 50s.
SUNDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 30s.

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 10/12/2026
Tuesday
13 OCT 2026
PORTSMOUTH, NH 03803 weather forecast Day 1, 0 hours 2 AM 51° 47° Mostly Cloudy 59%
RAIN
.01–.1 in
0% Thunder
( 2% severe)
ENE   12 96% 50°
Low 46° PORTSMOUTH, NH 03803 weather forecast Day 1, 3 hours 5 AM 48° 43° Mostly Cloudy ENE   12 96% 47°
High 62° PORTSMOUTH, NH 03803 weather forecast Day 1, 6 hours 8 AM 47° 42° Mostly Cloudy 93%
RAIN
.1–.25 in
0% Thunder
( 2% severe)
ENE   12 96% 46°

Mostly Cloudy

Rain

PORTSMOUTH, NH 03803 weather forecast Day 1, 9 hours 11 AM 51° 47° Mostly Cloudy E   12 86% 47°
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 2 PM 53° 49° Mostly Cloudy 98%
RAIN
***
0% Thunder
( 8% severe)
E   12 86% 49°
PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 5 PM 55° 52° Mostly Cloudy SE   10 86% 51°
PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 8 PM 55° 52° Mostly Cloudy 84%
RAIN
***
0% Thunder
( 29% severe)
SE   9 100% 55°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 11 PM 56° 54° Overcast S   7 100% 56°
Wednesday
14 OCT 2026
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 2 AM 57° 57° Mostly Cloudy 12%
RAIN
.01–.1 in
0% Thunder
( 14% severe)
SW   5 100% 57°
Low 55° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 5 AM 57° 56° Mostly Cloudy W   7 100% 57°
High 74° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 8 AM 57° 55° Partly Cloudy 0%

0% Thunder
( 3% severe)
WSW   8 100% 57°

Partly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 11 AM 66° 66° Mostly Cloudy W   10 81% 60°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 2 PM 71° 71° Partly Cloudy 0%

0% Thunder
( 1% severe)
W   12 63% 58°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 5 PM 68° 68° Partly Cloudy WNW   9 63% 55°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 8 PM 60° 59° Partly Cloudy 0%

0% Thunder
( 0% severe)
NW   8 78% 53°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 11 PM 56° 54° Partly Cloudy NW   8 83% 51°

PORTSMOUTH, NH extended weather forecast

BAD DAY
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Low 51° Low 49° Low 41° Low 45° Low 30°
High 73° High 60° High 54° High 52° High 53°
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
Overcast
78% Rain
Partly Cloudy
5% Rain
Overcast
79% Rain
Mostly Cloudy
50% Rain
Clear
14% Rain/Snow
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