PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

1:55 AM EDT OCT 14, 2026
Overcast
Mist
46°F
Feels Like: 43°F
Dewpoint: 46°F
Rel. Hum.: 100%
Visibility: 3 miles
Wind: W at 5 mph
Pressure: 29.79 inches
Last 72 hours

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PORTSMOUTH, NH 03803
Weather Forecast

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Snow Depth pages
TONIGHT
Cloudy with a chance of rain and thunderstorms in the evening, then partly cloudy with a slight chance of rain and thunderstorms after midnight. Areas of fog in the evening, then patchy fog after midnight. Lows in the mid 50s. South winds around 10 mph in the evening, becoming light and variable. Chance of rain 50 percent.
WEDNESDAY
Patchy fog in the morning. Partly sunny. Warmer with highs in the mid 70s. West winds around 10 mph.
WEDNESDAY NIGHT
Mostly clear. Less humid with lows in the mid 40s. Northwest winds around 10 mph.
THURSDAY
Mostly sunny. Highs in the lower 60s. Northwest winds around 10 mph in the morning, becoming light and variable.
THURSDAY NIGHT
Partly cloudy in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the lower 40s. Chance of rain 40 percent.
FRIDAY
Showers. Highs in the lower 60s. Chance of rain near 100 percent.
FRIDAY NIGHT
Showers in the evening, then partly cloudy with a chance of showers after midnight. Lows in the upper 30s. Chance of rain 90 percent.
SATURDAY
Mostly sunny. Highs in the upper 40s.
SATURDAY NIGHT
Mostly clear. Lows in the lower 30s.
SUNDAY
Mostly sunny. Highs in the lower 50s.
SUNDAY NIGHT
Mostly clear. Lows in the mid 30s.
MONDAY
Partly sunny. Highs around 60.

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 10/13/2026
Wednesday
14 OCT 2026
PORTSMOUTH, NH 03803 weather forecast Day 1, 0 hours 2 AM 57° 56° Mostly Cloudy 6%

0% Thunder
( 13% severe)
WSW   6 100% 57°
Low 56° PORTSMOUTH, NH 03803 weather forecast Day 1, 3 hours 5 AM 57° 56° Mostly Cloudy WNW   6 100% 57°
High 76° PORTSMOUTH, NH 03803 weather forecast Day 1, 6 hours 8 AM 59° 58° Mostly Cloudy 7%

0% Thunder
( 2% severe)
W   8 100% 59°

Mostly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 1, 9 hours 11 AM 70° 70° Partly Cloudy W   12 76% 62°
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 2 PM 73° 73° Mostly Cloudy 7%

0% Thunder
( 2% severe)
WNW   13 59% 58°
PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 5 PM 69° 69° Partly Cloudy WNW   10 63% 56°
PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 8 PM 61° 60° Partly Cloudy 3%

0% Thunder
( 0% severe)
NW   9 72% 52°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 11 PM 55° 52° Partly Cloudy WNW   10 77% 48°
Thursday
15 OCT 2026
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 2 AM 51° 47° Clear 0%

0% Thunder
( 0% severe)
WNW   10 80% 45°
Low 45° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 5 AM 49° 45° Clear NW   10 77% 42°
High 61° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 8 AM 46° 41° Clear 0%

0% Thunder
( 0% severe)
NNW   9 79% 40°

Clear



PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 11 AM 55° 53° Clear NNW   8 49% 36°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 2 PM 59° 58° Clear 0%

0% Thunder
( 0% severe)
NNW   7 36% 32°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 5 PM 57° 57° Partly Cloudy NNW   3 40% 33°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 8 PM 47° 46° Partly Cloudy 0%

0% Thunder
( 0% severe)
W   2 63% 35°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 11 PM 43° 42° Mostly Cloudy   CALM 79% 37°

PORTSMOUTH, NH extended weather forecast

Friday
16 OCT 2026
Saturday
17 OCT 2026
Sunday
18 OCT 2026
Monday
19 OCT 2026
Tuesday
20 OCT 2026
Low 42° Low 46° Low 33° Low 39° Low 47°
High 54° High 52° High 56° High 63° High 64°
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
91% Rain
Mostly Cloudy
88% Rain
Partly Cloudy
5% Rain/Snow
Partly Cloudy
15% Rain
Partly Cloudy
23% Rain
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