Portsmouth weather live forecast

Tomorrow's maximum temperature in Portsmouth is expected to be 48°F.

5-day weather forecast updated at 04:02 on Wednesday 16th April 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 16th April 2025

Expect broken clouds in Portsmouth, New Hampshire with a maximum temperature of 48°F, maximum UV of 3 (Moderate) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 16 mph from the west.

  • 48°F maximum temperature48
    °F maximum temperature
  • 39°F minimum temperature39
    °F minimum temperature
  • Broken clouds
    broken clouds
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 43°F wind chill43
    °F wind chill
  • Moderate breeze of 16 mph from the West16
    mph wind from W

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Portsmouth weather for Thursday 17th April 2025

Expect clear skies in Portsmouth, New Hampshire with a maximum temperature of 50°F, maximum UV of 5 (Moderate) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 13 mph from the west.

  • 50°F maximum temperature50
    °F maximum temperature
  • 37°F minimum temperature37
    °F minimum temperature
  • Clear skies
    clear skies
  • 13 hours of bright sunshine13
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Moderate breeze of 13 mph from the West13
    mph wind from W

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Portsmouth weather for Friday 18th April 2025

Expect mostly cloudy with light rain in Portsmouth, New Hampshire with a maximum temperature of 59°F, maximum UV of 6 (High) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 43% chance of some rain and a gentle breeze of 10 mph from the south.

  • 59°F maximum temperature59
    °F maximum temperature
  • 36°F minimum temperature36
    °F minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 43% chance of some rain43
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • 59°F wind chill59
    °F wind chill
  • Gentle breeze of 10 mph from the South10
    mph wind from S

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Portsmouth weather for Saturday 19th April 2025

Expect sunshine and showers in Portsmouth, New Hampshire with a maximum temperature of 72°F, maximum UV of 4 (Moderate) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 43% chance of some rain and a moderate breeze of 14 mph from the south-west.

  • 72°F maximum temperature72
    °F maximum temperature
  • 50°F minimum temperature50
    °F minimum temperature
  • Sunshine and showers
    sunshine and showers
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 43% chance of some rain43
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • 72°F wind chill72
    °F wind chill
  • Moderate breeze of 14 mph from the South-West14
    mph wind from SW

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Portsmouth weather for Sunday 20th April 2025

Expect sunshine and showers in Portsmouth, New Hampshire with a maximum temperature of 55°F, maximum UV of 3 (Moderate) and 14 hours of bright sunshine. There are 2-5 mm of rainfall expected with 25% chance of some rain and a moderate breeze of 12 mph from the north-west.

  • 55°F maximum temperature55
    °F maximum temperature
  • 41°F minimum temperature41
    °F minimum temperature
  • Sunshine and showers
    sunshine and showers
  • 14 hours of bright sunshine14
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 25% chance of some rain25
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Moderate breeze of 12 mph from the North-West12
    mph wind from NW

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