Portsmouth weather live forecast

Today's maximum temperature in Portsmouth is expected to be 12°C. Select a day from the live weather forecast for Portsmouth, New Hampshire, USA for more weather parameters.

  • Wednesday
    26th Nov
    Mostly cloudy with rain (5-10 mm of rainfall expected)
  • Thursday
    27th Nov
    Scattered clouds
  • Friday
    28th Nov
    Scattered clouds
  • Saturday
    29th Nov
    Scattered clouds
  • Sunday
    30th Nov
    Mostly cloudy with light rain (2-5 mm of rainfall expected)

5-day weather forecast updated at 04:03 on Wednesday 26th November 2025 GMT

More about Portsmouth

Portsmouth by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for New Hampshire

KLM: Low fares on long haul from £395 return

  • Save on return flights to worldwide destinations
  • Book flights to Abu Dhabi, Jo'burg, Tokyo & more
  • Plus more flights to the Americas, Middle East & Europe
Go to KLM deal >>

View all KLM offers

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 26th November 2025

Expect mostly cloudy with rain in Portsmouth, New Hampshire with a maximum temperature of 12°C and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 51% chance of some rain and a light breeze of 10 kph from the south-west.

  • 12°C maximum temperature12
    °C maximum temperature
  • 8°C minimum temperature8
    °C minimum temperature
  • Mostly cloudy with rain
    mostly cloudy with rain
  • No hours of bright sunshine0
    hours of sunshine
  • No UV (maximum) index0
    UV index (None)
  • 51% chance of some rain51
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • 12°C wind chill12
    °C wind chill
  • Light breeze of 10 kph from the South-West10
    kph wind from SW

Back to top

Portsmouth weather for Thursday 27th November 2025

Expect scattered clouds in Portsmouth, New Hampshire with a maximum temperature of 9°C, maximum UV of 1 (Low) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 21 kph from the west.

  • 9°C maximum temperature9
    °C maximum temperature
  • 1°C minimum temperature1
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 6°C wind chill6
    °C wind chill
  • Moderate breeze of 21 kph from the West21
    kph wind from W

Back to top

Portsmouth weather for Friday 28th November 2025

Expect scattered clouds in Portsmouth, New Hampshire with a maximum temperature of 4°C, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 26 kph from the west.

  • 4°C maximum temperature4
    °C maximum temperature
  • -1°C minimum temperature-1
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 3 hours of bright sunshine3
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • -1°C wind chill-1
    °C wind chill
  • Moderate breeze of 26 kph from the West26
    kph wind from W

Back to top

Portsmouth weather for Saturday 29th November 2025

Expect scattered clouds in Portsmouth, New Hampshire with a maximum temperature of 2°C, maximum UV of 1 (Low) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 23 kph from the west.

  • 2°C maximum temperature2
    °C maximum temperature
  • -4°C minimum temperature-4
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • -3°C wind chill-3
    °C wind chill
  • Moderate breeze of 23 kph from the West23
    kph wind from W

Back to top

Portsmouth weather for Sunday 30th November 2025

Expect mostly cloudy with light rain in Portsmouth, New Hampshire with a maximum temperature of 8°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 69% chance of some rain and a moderate breeze of 21 kph from the south.

  • 8°C maximum temperature8
    °C maximum temperature
  • -4°C minimum temperature-4
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 69% chance of some rain69
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • 4°C wind chill4
    °C wind chill
  • Moderate breeze of 21 kph from the South21
    kph wind from S

Back to top

International Drivers Association: Driving permit plans from £37

  • Check out International driving permit plans from only £37
  • Choose from print + digital & digtial only permits
  • Valid for up to 3 years & use in over 150 countries
Go to International Drivers Association deal >>

Metric (°C / mm)  |  Imperial (°F / inches)

Back to top

More about the USA

Related posts

Popular travel offers

Explore holiday destinations

More holidays

Save with latest deals & discounts

More deals

Airport parking

More parking

Airport lounges

More lounges

Top ^