Portsmouth weather live forecast

Tomorrow's maximum temperature in Portsmouth is expected to be 10°C.

  • Wednesday
    12th Mar
    Broken clouds
  • Thursday
    13th Mar
    Mostly cloudy with light snow (0-2 cm of snow expected)
  • Friday
    14th Mar
    Scattered clouds
  • Saturday
    15th Mar
    Broken clouds
  • Sunday
    16th Mar
    Mostly cloudy with light rain (2-5 mm of rainfall expected)

5-day weather forecast updated at 04:02 on Wednesday 12th March 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 Wednesday 12th March 2025

Expect broken clouds in Portsmouth, New Hampshire with a maximum temperature of 10°C, maximum UV of 4 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the north-west.

  • 10°C maximum temperature10
    °C maximum temperature
  • 2°C minimum temperature2
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 7°C wind chill7
    °C wind chill
  • Gentle breeze of 17 kph from the North-West17
    kph wind from NW

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Portsmouth weather for Thursday 13th March 2025

Expect mostly cloudy with light snow in Portsmouth, New Hampshire with a maximum temperature of 6°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 0-2 cm of snow expected with 20% chance of some snow and a gentle breeze of 14 kph from the south-east.

  • 6°C maximum temperature6
    °C maximum temperature
  • 1°C minimum temperature1
    °C minimum temperature
  • Mostly cloudy with light snow
    mostly cloudy with light snow
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 20% chance of some snow20
    % chance of some snow
  • 0-2 cm of snow expected<2
    cm of snow expected
  • 3°C wind chill3
    °C wind chill
  • Gentle breeze of 14 kph from the South-East14
    kph wind from SE

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Portsmouth weather for Friday 14th March 2025

Expect scattered clouds in Portsmouth, New Hampshire with a maximum temperature of 9°C, maximum UV of 4 (Moderate) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the south-east.

  • 9°C maximum temperature9
    °C maximum temperature
  • 1°C minimum temperature1
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 10 hours of bright sunshine10
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 7°C wind chill7
    °C wind chill
  • Light breeze of 11 kph from the South-East11
    kph wind from SE

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Portsmouth weather for Saturday 15th March 2025

Expect broken clouds in Portsmouth, New Hampshire with a maximum temperature of 11°C, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the south.

  • 11°C maximum temperature11
    °C maximum temperature
  • 4°C minimum temperature4
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Gentle breeze of 13 kph from the South13
    kph wind from S

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Portsmouth weather for Sunday 16th March 2025

Expect mostly cloudy with light rain in Portsmouth, New Hampshire with a maximum temperature of 19°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 63% chance of some rain and a fresh breeze of 29 kph from the south.

  • 19°C maximum temperature19
    °C maximum temperature
  • 11°C minimum temperature11
    °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)
  • 63% chance of some rain63
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Fresh breeze of 29 kph from the South29
    kph wind from S

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

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