Portland weather live forecast

Tomorrow's maximum temperature in Portland is expected to be 14°C.

  • Sunday
    4th May
    Mostly cloudy with light rain (2-5 mm of rainfall expected)
  • Monday
    5th May
    Cloudy with some rain (10-20 mm of rainfall expected)
  • Tuesday
    6th May
    Cloudy with some rain (5-10 mm of rainfall expected)
  • Wednesday
    7th May
    Mostly cloudy with rain (5-10 mm of rainfall expected)
  • Thursday
    8th May
    Sunshine and showers (0-2 mm of rainfall expected)

5-day weather forecast updated at 04:00 on Sunday 4th May 2025 GMT

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

Portland weather forecast by day

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

Portland weather for Sunday 4th May 2025

Expect mostly cloudy with light rain in Portland, Maine with a maximum temperature of 14°C, maximum UV of 3 (Moderate) and no hours of bright sunshine. There are 2-5 mm of rainfall expected with 52% chance of some rain and a light breeze of 8 kph from the north-east.

  • 14°C maximum temperature14
    °C maximum temperature
  • 11°C minimum temperature11
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 52% chance of some rain52
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 8 kph from the North-East8
    kph wind from NE

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Portland weather for Monday 5th May 2025

Expect cloudy with some rain in Portland, Maine with a maximum temperature of 12°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 10-20 mm of rainfall expected with 75% chance of some rain and a gentle breeze of 16 kph from the east.

  • 12°C maximum temperature12
    °C maximum temperature
  • 8°C minimum temperature8
    °C minimum temperature
  • Cloudy with some rain
    cloudy with some rain
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 75% chance of some rain75
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • 12°C wind chill12
    °C wind chill
  • Gentle breeze of 16 kph from the East16
    kph wind from E

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Portland weather for Tuesday 6th May 2025

Expect cloudy with some rain in Portland, Maine with a maximum temperature of 11°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 92% chance of some rain and a light breeze of 12 kph from the east.

  • 11°C maximum temperature11
    °C maximum temperature
  • 9°C minimum temperature9
    °C minimum temperature
  • Cloudy with some rain
    cloudy with some rain
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 92% chance of some rain92
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • 11°C wind chill11
    °C wind chill
  • Light breeze of 12 kph from the East12
    kph wind from E

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Portland weather for Wednesday 7th May 2025

Expect mostly cloudy with rain in Portland, Maine with a maximum temperature of 16°C, maximum UV of 4 (Moderate) and 2 hours of bright sunshine. There are 5-10 mm of rainfall expected with 75% chance of some rain and a light breeze of 11 kph from the south.

  • 16°C maximum temperature16
    °C maximum temperature
  • 10°C minimum temperature10
    °C minimum temperature
  • Mostly cloudy with rain
    mostly cloudy with rain
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 75% chance of some rain75
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 11 kph from the South11
    kph wind from S

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Portland weather for Thursday 8th May 2025

Expect sunshine and showers in Portland, Maine with a maximum temperature of 15°C, maximum UV of 1 (Low) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 37% chance of some rain and a gentle breeze of 16 kph from the north.

  • 15°C maximum temperature15
    °C maximum temperature
  • 10°C minimum temperature10
    °C minimum temperature
  • Sunshine and showers
    sunshine and showers
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 37% chance of some rain37
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Gentle breeze of 16 kph from the North16
    kph wind from N

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

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