Portsmouth weather live forecast

Tomorrow's maximum temperature in Portsmouth is expected to be 57°F.

5-day weather forecast updated at 04:03 on Saturday 24th May 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 24th May 2025

Expect mostly cloudy with light rain in Portsmouth, New Hampshire with a maximum temperature of 57°F, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 2-5 mm of rainfall expected with 56% chance of some rain and a gentle breeze of 10 mph from the north-west.

  • 57°F maximum temperature57
    °F maximum temperature
  • 46°F minimum temperature46
    °F minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 56% chance of some rain56
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • 57°F wind chill57
    °F wind chill
  • Gentle breeze of 10 mph from the North-West10
    mph wind from NW

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Portsmouth weather for Sunday 25th May 2025

Expect overcast skies in Portsmouth, New Hampshire with a maximum temperature of 59°F, maximum UV of 3 (Moderate) and no hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 10 mph from the north-west.

  • 59°F maximum temperature59
    °F maximum temperature
  • 46°F minimum temperature46
    °F minimum temperature
  • Overcast skies
    overcast skies
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Gentle breeze of 10 mph from the North-West10
    mph wind from NW

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Portsmouth weather for Monday 26th May 2025

Expect broken clouds in Portsmouth, New Hampshire with a maximum temperature of 64°F, maximum UV of 5 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 mph from the north-west.

  • 64°F maximum temperature64
    °F maximum temperature
  • 48°F minimum temperature48
    °F minimum temperature
  • Broken clouds
    broken clouds
  • 7 hours of bright sunshine7
    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
  • Light breeze of 7 mph from the North-West7
    mph wind from NW

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Portsmouth weather for Tuesday 27th May 2025

Expect scattered clouds in Portsmouth, New Hampshire with a maximum temperature of 73°F, maximum UV of 6 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 6 mph from the west.

  • 73°F maximum temperature73
    °F maximum temperature
  • 50°F minimum temperature50
    °F minimum temperature
  • Scattered clouds
    scattered clouds
  • 12 hours of bright sunshine12
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 6 mph from the West6
    mph wind from W

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Portsmouth weather for Wednesday 28th May 2025

Expect scattered clouds in Portsmouth, New Hampshire with a maximum temperature of 73°F, maximum UV of 6 (High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 6 mph from the south.

  • 73°F maximum temperature73
    °F maximum temperature
  • 54°F minimum temperature54
    °F minimum temperature
  • Scattered clouds
    scattered clouds
  • 11 hours of bright sunshine11
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 73°F wind chill73
    °F wind chill
  • Light breeze of 6 mph from the South6
    mph wind from S

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