PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

1:55 PM EDT OCT 1, 2026
Broken Clouds
75°F
Feels Like: 75°F
Dewpoint: 63°F
Rel. Hum.: 66%
Visibility: 10 miles
Wind: SW at 3 mph
Pressure: 29.96 inches
Last 72 hours

Local Area Snow Depth

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PORTSMOUTH, NH 03803
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TONIGHT
Partly cloudy. Lows in the mid 60s. Southwest winds around 10 mph this evening, becoming light and variable.
FRIDAY
Partly sunny. A chance of showers in the afternoon. Highs in the lower 80s. Southwest winds around 10 mph. Chance of rain 40 percent.
FRIDAY NIGHT
Mostly cloudy with a chance of showers in the evening, then mostly clear after midnight. Lows in the lower 50s. Light and variable winds. Chance of rain 30 percent.
SATURDAY
Sunny. Highs in the upper 60s. Light and variable winds.
SATURDAY NIGHT
Mostly clear. Lows in the mid 40s. Light and variable winds.
SUNDAY
Partly sunny. Highs in the lower 60s.
SUNDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. A 30 percent chance of showers. Lows in the upper 40s.
MONDAY
Partly sunny. A chance of showers in the morning. Highs in the mid 60s. Chance of rain 30 percent.
MONDAY NIGHT
Mostly clear. Lows in the lower 40s.
TUESDAY
Mostly sunny. Highs in the mid 50s.
TUESDAY NIGHT
Mostly clear. Lows in the upper 30s.
WEDNESDAY
Sunny. Highs in the upper 50s.
WEDNESDAY NIGHT
Mostly clear. Lows in the mid 40s.

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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