Portland weather forecast

  • Saturday
    25th May
    Scattered clouds
  • Sunday
    26th May
    Isolated thunderstorms (10-20 mm of rainfall expected)
  • Monday
    27th May
    Clear skies
  • Tuesday
    28th May
    Mostly cloudy with rain (5-10 mm of rainfall expected)
  • Wednesday
    29th May
    Isolated thunderstorms (5-10 mm of rainfall expected)

Last updated at 04:02 on Saturday 25th May 2019 GMT

Going to Portland? Find the best month to visit Portland based on the weather.

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Tomorrow's maximum temperature in Portland is expected to be 23°C.

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More about Portland

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The 5-day weather forecast for Portland, Maine is provided by the Swiss meteorological agency, MeteoBlue. Find out more about our data sources.

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

Portland weather forecast by day

Below are the detailed weather forecasts for Portland for the next 5 days.

Portland weather for Saturday 25th May 2019

Below is the Portland weather forecast for Saturday 25th May 2019. Expect scattered clouds in Portland, Maine with a maximum temperature of 21°C, maximum UV of 8 (Very High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the north.

  • 21°C maximum temperature21
    °C maximum temperature
  • 11°C minimum temperature11
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 21°C wind chill21
    °C wind chill
  • Gentle breeze of 18 kph from the North18
    kph wind from N

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Portland weather for Sunday 26th May 2019

Below is the Portland weather forecast for Sunday 26th May 2019. Expect isolated thunderstorms in Portland, Maine with a maximum temperature of 23°C, maximum UV of 6 (High) and 5 hours of bright sunshine. There are 10-20 mm of rainfall expected with 99% chance of some rain and a light breeze of 12 kph from the north.

  • 23°C maximum temperature23
    °C maximum temperature
  • 12°C minimum temperature12
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 99% chance of some rain99
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 12 kph from the North12
    kph wind from N

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Portland weather for Monday 27th May 2019

Below is the Portland weather forecast for Monday 27th May 2019. Expect clear skies in Portland, Maine with a maximum temperature of 19°C, maximum UV of 7 (High) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the north-west.

  • 19°C maximum temperature19
    °C maximum temperature
  • 12°C minimum temperature12
    °C minimum temperature
  • Clear skies
    clear skies
  • 14 hours of bright sunshine14
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 19°C wind chill19
    °C wind chill
  • Light breeze of 7 kph from the North-West7
    kph wind from NW

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Portland weather for Tuesday 28th May 2019

Below is the Portland weather forecast for Tuesday 28th May 2019. Expect mostly cloudy with rain in Portland, Maine with a maximum temperature of 14°C, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 5-10 mm of rainfall expected with 84% chance of some rain and a light breeze of 11 kph from the south.

  • 14°C maximum temperature14
    °C maximum temperature
  • 7°C minimum temperature7
    °C minimum temperature
  • Mostly cloudy with rain
    mostly cloudy with rain
  • 3 hours of bright sunshine3
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 84% chance of some rain84
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • 14°C wind chill14
    °C wind chill
  • Light breeze of 11 kph from the South11
    kph wind from S

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Portland weather for Wednesday 29th May 2019

Below is the Portland weather forecast for Wednesday 29th May 2019. Expect isolated thunderstorms in Portland, Maine with a maximum temperature of 13°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 69% chance of some rain and a gentle breeze of 14 kph from the south.

  • 13°C maximum temperature13
    °C maximum temperature
  • 7°C minimum temperature7
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 69% chance of some rain69
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • 13°C wind chill13
    °C wind chill
  • Gentle breeze of 14 kph from the South14
    kph wind from S

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