Portsmouth weather live forecast

Today's maximum temperature in Portsmouth is expected to be 4°C. Select a day from the live weather forecast for Portsmouth, New Hampshire, USA for more weather parameters.

  • Friday
    28th Nov
    Broken clouds
  • Saturday
    29th Nov
    Scattered clouds
  • Sunday
    30th Nov
    Overcast with light rain (5-10 mm of rainfall expected)
  • Monday
    1st Dec
    Scattered clouds
  • Tuesday
    2nd Dec
    Mostly cloudy with snow (20-30 cm of snow expected)

5-day weather forecast updated at 04:04 on Friday 28th 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 Friday 28th November 2025

Expect broken clouds in Portsmouth, New Hampshire with a maximum temperature of 4°C, maximum UV of 1 (Low) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 25 kph from the west.

  • 4°C maximum temperature4
    °C maximum temperature
  • 0°C minimum temperature0
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 5 hours of bright sunshine5
    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 25 kph from the West25
    kph wind from W

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Portsmouth weather for Saturday 29th November 2025

Expect scattered clouds in Portsmouth, New Hampshire with a maximum temperature of 3°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.

  • 3°C maximum temperature3
    °C maximum temperature
  • -2°C minimum temperature-2
    °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
  • -2°C wind chill-2
    °C wind chill
  • Moderate breeze of 23 kph from the West23
    kph wind from W

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Portsmouth weather for Sunday 30th November 2025

Expect overcast with light rain in Portsmouth, New Hampshire with a maximum temperature of 8°C and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 98% chance of some rain and a moderate breeze of 22 kph from the south.

  • 8°C maximum temperature8
    °C maximum temperature
  • -2°C minimum temperature-2
    °C minimum temperature
  • Overcast with light rain
    overcast with light rain
  • No hours of bright sunshine0
    hours of sunshine
  • No UV (maximum) index0
    UV index (None)
  • 98% chance of some rain98
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • 5°C wind chill5
    °C wind chill
  • Moderate breeze of 22 kph from the South22
    kph wind from S

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Portsmouth weather for Monday 1st December 2025

Expect scattered clouds in Portsmouth, New Hampshire with a maximum temperature of 6°C, maximum UV of 1 (Low) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 22 kph from the west.

  • 6°C maximum temperature6
    °C maximum temperature
  • -4°C minimum temperature-4
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 2°C wind chill2
    °C wind chill
  • Moderate breeze of 22 kph from the West22
    kph wind from W

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Portsmouth weather for Tuesday 2nd December 2025

Expect mostly cloudy with snow in Portsmouth, New Hampshire with a maximum temperature of 1°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 20-30 cm of snow expected with 86% chance of some snow and a moderate breeze of 22 kph from the north-east.

  • 1°C maximum temperature1
    °C maximum temperature
  • -4°C minimum temperature-4
    °C minimum temperature
  • Mostly cloudy with snow
    mostly cloudy with snow
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 86% chance of some snow86
    % chance of some snow
  • 20-30 cm of snow expected<30
    cm of snow expected
  • -4°C wind chill-4
    °C wind chill
  • Moderate breeze of 22 kph from the North-East22
    kph wind from NE

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

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