Portsmouth weather live forecast

Tomorrow's maximum temperature in Portsmouth is expected to be -6°C.

5-day weather forecast updated at 04:04 on Tuesday 18th February 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 Tuesday 18th February 2025

Expect scattered clouds in Portsmouth, New Hampshire with a maximum temperature of -6°C, maximum UV of 2 (Low) and 7 hours of bright sunshine. There are 0 cm of snow expected and a fresh breeze of 33 kph from the west.

  • -6°C maximum temperature-6
    °C maximum temperature
  • -11°C minimum temperature-11
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 0 cm of snow expected0
    cm of snow expected
  • -15°C wind chill-15
    °C wind chill
  • Fresh breeze of 33 kph from the West33
    kph wind from W

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Portsmouth weather for Wednesday 19th February 2025

Expect scattered clouds in Portsmouth, New Hampshire with a maximum temperature of -4°C, maximum UV of 3 (Moderate) and 10 hours of bright sunshine. There are 0 cm of snow expected and a moderate breeze of 22 kph from the west.

  • -4°C maximum temperature-4
    °C maximum temperature
  • -12°C minimum temperature-12
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 10 hours of bright sunshine10
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 0 cm of snow expected0
    cm of snow expected
  • -10°C wind chill-10
    °C wind chill
  • Moderate breeze of 22 kph from the West22
    kph wind from W

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Portsmouth weather for Thursday 20th February 2025

Expect mostly cloudy with light snow in Portsmouth, New Hampshire with a maximum temperature of 0°C, maximum UV of 3 (Moderate) and no hours of bright sunshine. There are 0-2 cm of snow expected with 79% chance of some snow and a gentle breeze of 14 kph from the north-west.

  • 0°C maximum temperature0
    °C maximum temperature
  • -12°C minimum temperature-12
    °C minimum temperature
  • Mostly cloudy with light snow
    mostly cloudy with light snow
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 79% chance of some snow79
    % chance of some snow
  • 0-2 cm of snow expected<2
    cm of snow expected
  • -5°C wind chill-5
    °C wind chill
  • Gentle breeze of 14 kph from the North-West14
    kph wind from NW

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Portsmouth weather for Friday 21st February 2025

Expect clear skies with flurries of snow in Portsmouth, New Hampshire with a maximum temperature of 0°C, maximum UV of 3 (Moderate) and 5 hours of bright sunshine. There are 0-2 cm of snow expected with 3% chance of some snow and a moderate breeze of 21 kph from the north-west.

  • 0°C maximum temperature0
    °C maximum temperature
  • -8°C minimum temperature-8
    °C minimum temperature
  • Clear skies with flurries of snow
    clear skies with flurries of snow
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 3% chance of some snow3
    % chance of some snow
  • 0-2 cm of snow expected<2
    cm of snow expected
  • -5°C wind chill-5
    °C wind chill
  • Moderate breeze of 21 kph from the North-West21
    kph wind from NW

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Portsmouth weather for Saturday 22nd February 2025

Expect broken clouds in Portsmouth, New Hampshire with a maximum temperature of 1°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the north-west.

  • 1°C maximum temperature1
    °C maximum temperature
  • -9°C minimum temperature-9
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • -3°C wind chill-3
    °C wind chill
  • Gentle breeze of 14 kph from the North-West14
    kph wind from NW

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

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