Portsmouth weather live forecast

Today's maximum temperature in Portsmouth is expected to be 9°C. Select a day from the live weather forecast for Portsmouth, New Hampshire, USA for more weather parameters.

  • Saturday
    22nd Nov
    Sunshine and showers (0-2 mm of rainfall expected)
  • Sunday
    23rd Nov
    Cloudy with sleet or snow (0-2 mm of rainfall expected)
  • Monday
    24th Nov
    Scattered clouds
  • Tuesday
    25th Nov
    Mostly cloudy with light rain (2-5 mm of rainfall expected)
  • Wednesday
    26th Nov
    Mostly cloudy with light rain (2-5 mm of rainfall expected)

5-day weather forecast updated at 04:03 on Sunday 23rd November 2025 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 Saturday 22nd November 2025

Expect sunshine and showers in Portsmouth, New Hampshire with a maximum temperature of 9°C, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 5% chance of some rain and a gentle breeze of 15 kph from the north-west.

  • 9°C maximum temperature9
    °C maximum temperature
  • 0°C minimum temperature0
    °C minimum temperature
  • Sunshine and showers
    sunshine and showers
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 5% chance of some rain5
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • 7°C wind chill7
    °C wind chill
  • Gentle breeze of 15 kph from the North-West15
    kph wind from NW

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Portsmouth weather for Sunday 23rd November 2025

Expect cloudy with sleet or snow in Portsmouth, New Hampshire with a maximum temperature of 5°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 0-2 mm of sleet/snow expected with 42% chance of some sleet or snow and a light breeze of 10 kph from the south-west.

  • 5°C maximum temperature5
    °C maximum temperature
  • -2°C minimum temperature-2
    °C minimum temperature
  • Cloudy with sleet or snow
    cloudy with sleet or snow
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 42% chance of some sleet or snow42
    % chance of some sleet or snow
  • 0-2 mm of sleet/snow expected<2
    mm of sleet/snow expected
  • 2°C wind chill2
    °C wind chill
  • Light breeze of 10 kph from the South-West10
    kph wind from SW

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Portsmouth weather for Monday 24th November 2025

Expect scattered clouds in Portsmouth, New Hampshire with a maximum temperature of 6°C, maximum UV of 1 (Low) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the north-west.

  • 6°C maximum temperature6
    °C maximum temperature
  • -1°C minimum temperature-1
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 3°C wind chill3
    °C wind chill
  • Gentle breeze of 18 kph from the North-West18
    kph wind from NW

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Portsmouth weather for Tuesday 25th 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 no hours of bright sunshine. There are 2-5 mm of rainfall expected with 72% chance of some rain and a gentle breeze of 14 kph from the south-west.

  • 8°C maximum temperature8
    °C maximum temperature
  • -1°C minimum temperature-1
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 72% chance of some rain72
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • 6°C wind chill6
    °C wind chill
  • Gentle breeze of 14 kph from the South-West14
    kph wind from SW

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Portsmouth weather for Wednesday 26th November 2025

Expect mostly cloudy with light rain in Portsmouth, New Hampshire with a maximum temperature of 10°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 38% chance of some rain and a light breeze of 11 kph from the south-west.

  • 10°C maximum temperature10
    °C maximum temperature
  • 7°C minimum temperature7
    °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)
  • 38% chance of some rain38
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 11 kph from the South-West11
    kph wind from SW

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

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