PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

12:55 PM EDT SEP 30, 2026
Overcast
64°F
Feels Like: 65°F
Dewpoint: 59°F
Rel. Hum.: 84%
Visibility: 10 miles
Wind: SSE at 5 mph
Pressure: 30.06 inches
Last 72 hours

Local Area Snow Depth

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PORTSMOUTH, NH 03803
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
REST OF TODAY
Mostly cloudy with a slight chance of drizzle. Highs in the upper 60s. Light and variable winds.
TONIGHT
Partly cloudy in the evening, then becoming mostly cloudy. Patchy fog. Lows in the mid 50s. Light and variable winds.
THURSDAY
Patchy fog in the morning. Partly sunny. Highs in the upper 70s. Light and variable winds.
THURSDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 60s. Light and variable winds.
FRIDAY
Partly sunny. A chance of showers in the afternoon. Highs in the upper 70s. Light and variable winds, becoming southwest around 10 mph in the afternoon. Chance of rain 40 percent.
FRIDAY NIGHT
Mostly cloudy with a chance of showers in the evening, then partly cloudy after midnight. Lows in the lower 50s. Chance of rain 40 percent.
SATURDAY
Mostly sunny. Highs in the upper 60s.
SATURDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 40s.
SUNDAY
Partly sunny. Highs in the lower 60s.
SUNDAY NIGHT
Partly cloudy with a 30 percent chance of showers. Lows in the upper 40s.
MONDAY
Partly sunny. Highs in the mid 60s.
MONDAY NIGHT
Mostly clear. Lows around 40.
TUESDAY
Mostly sunny. Highs 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  9/30/2026
Wednesday
30 SEP 2026
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 2 PM 68° 68° Mostly Cloudy 0%

0% Thunder
( 0% severe)
S   6 68% 57°
High 69° PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 5 PM 66° 66° Mostly Cloudy SSE   7 73% 57°
Mostly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 8 PM 59° 58° Mostly Cloudy 0%

0% Thunder
( 0% severe)
S   6 93% 57°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 11 PM 57° 57° Mostly Cloudy SSW   3 100% 57°
Thursday
1 OCT 2026
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 2 AM 56° 56° Mostly Cloudy 2%

0% Thunder
( 0% severe)
SW   3 100% 56°
Low 55° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 5 AM 55° 55° Mostly Cloudy SW   3 100% 55°
High 79° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 8 AM 57° 57° Mostly Cloudy 3%

0% Thunder
( 0% severe)
WSW   5 96% 56°

Mostly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 11 AM 71° 71° Mostly Cloudy WSW   6 68% 60°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 2 PM 77° 79° Mostly Cloudy 6%

0% Thunder
( 1% severe)
SSW   9 56% 60°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 5 PM 76° 78° Partly Cloudy SW   9 58% 60°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 8 PM 69° 69° Mostly Cloudy 0%

0% Thunder
( 1% severe)
SW   8 73% 60°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 11 PM 67° 67° Partly Cloudy SW   8 81% 61°
Friday
2 OCT 2026
PORTSMOUTH, NH 03803 weather forecast Day 3, 0 hours 2 AM 66° 66° Partly Cloudy 1%

0% Thunder
( 1% severe)
SW   7 81% 60°
Low 65° PORTSMOUTH, NH 03803 weather forecast Day 3, 3 hours 5 AM 66° 66° Partly Cloudy SW   8 81% 60°
High 80° PORTSMOUTH, NH 03803 weather forecast Day 3, 6 hours 8 AM 66° 66° Partly Cloudy 4%

0% Thunder
( 1% severe)
SW   8 81% 60°

Mostly Cloudy

Chance of Rain

PORTSMOUTH, NH 03803 weather forecast Day 3, 9 hours 11 AM 74° 74° Mostly Cloudy SW   9 66% 62°
PORTSMOUTH, NH 03803 weather forecast Day 3, 15 hours 2 PM 79° 80° Mostly Cloudy 40%
RAIN
.25–.5 in
0% Thunder
( 5% severe)
WSW   10 56% 62°
PORTSMOUTH, NH 03803 weather forecast Day 3, 18 hours 5 PM 76° 78° Mostly Cloudy W   10 64% 63°
PORTSMOUTH, NH 03803 weather forecast Day 3, 21 hours 8 PM 69° 69° Mostly Cloudy     W   8 81% 63°

PORTSMOUTH, NH extended weather forecast

Saturday
3 OCT 2026
Sunday
4 OCT 2026
Monday
5 OCT 2026
Tuesday
6 OCT 2026
Wednesday
7 OCT 2026
Low 55° Low 46° Low 48° Low 42° Low 40°
High 65° High 60° High 67° High 56° High 59°
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
35% Rain
Mostly Cloudy
20% Rain
Overcast
45% Rain
Partly Cloudy
31% Rain
Partly Cloudy
20% Rain
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