Portsmouth weather live forecast

Today's maximum temperature in Portsmouth is expected to be 32°F. Select a day from the live weather forecast for Portsmouth, New Hampshire, USA for more weather parameters.

Wednesday
4th Feb
32

16

7

2
Thursday
5th Feb
30

14

10

2
Friday
6th Feb
28

12

2

2
Saturday
7th Feb
25

7

0

1
Sunday
8th Feb
16

1

10

2

5-day weather forecast updated at 04:06 on Wednesday 4th February 2026 GMT

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The 5-day weather forecast for New Hampshire (Portsmouth) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Portsmouth weather forecast by day

Below are the detailed weather forecasts for Portsmouth for the next 5 days.

Portsmouth weather for Wednesday 4th February 2026

Expect scattered clouds in Portsmouth, New Hampshire with a maximum temperature of 32°F, maximum UV of 2 (Low) and 7 hours of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 9 mph from the west.

32
°F maximum temperature
16
°F minimum temperature
scattered clouds
7
hours of sunshine
2
UV index (Low)
0
cm of snow expected
23
°F wind chill
9
mph wind from W

Portsmouth weather for Thursday 5th February 2026

Expect scattered clouds in Portsmouth, New Hampshire with a maximum temperature of 30°F, maximum UV of 2 (Low) and 10 hours of bright sunshine. There are 0 cm of snow expected and a light breeze of 7 mph from the north-west.

30
°F maximum temperature
14
°F minimum temperature
scattered clouds
10
hours of sunshine
2
UV index (Low)
0
cm of snow expected
23
°F wind chill
7
mph wind from NW

Portsmouth weather for Friday 6th February 2026

Expect broken clouds in Portsmouth, New Hampshire with a maximum temperature of 28°F, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 0 cm of snow expected and a light breeze of 6 mph from the north.

28
°F maximum temperature
12
°F minimum temperature
broken clouds
2
hours of sunshine
2
UV index (Low)
0
cm of snow expected
21
°F wind chill
6
mph wind from N

Portsmouth weather for Saturday 7th February 2026

Expect mostly cloudy with light snow in Portsmouth, New Hampshire with a maximum temperature of 25°F, maximum UV of 1 (Low) and no hours of bright sunshine. There are 2-5 cm of snow expected with 67% chance of some snow and a moderate breeze of 14 mph from the north-west.

25
°F maximum temperature
7
°F minimum temperature
mostly cloudy with light snow
0
hours of sunshine
1
UV index (Low)
67
% chance of some snow
<5
cm of snow expected
14
°F wind chill
14
mph wind from NW

Portsmouth weather for Sunday 8th February 2026

Expect scattered clouds in Portsmouth, New Hampshire with a maximum temperature of 16°F, maximum UV of 2 (Low) and 10 hours of bright sunshine. There are 0 cm of snow expected and a moderate breeze of 12 mph from the north-west.