Portland weather live forecast

Tomorrow's maximum temperature in Portland is expected to be 16°C.

5-day weather forecast updated at 04:00 on Saturday 14th June 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 Saturday 14th June 2025

Expect mostly cloudy with light rain in Portland, Maine with a maximum temperature of 16°C, maximum UV of 5 (Moderate) and 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 74% chance of some rain and a light breeze of 11 kph from the south-east.

  • 16°C maximum temperature16
    °C maximum temperature
  • 13°C minimum temperature13
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 3 hours of bright sunshine3
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 74% chance of some rain74
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • 16°C wind chill16
    °C wind chill
  • Light breeze of 11 kph from the South-East11
    kph wind from SE

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Portland weather for Sunday 15th June 2025

Expect broken clouds in Portland, Maine with a maximum temperature of 17°C, maximum UV of 8 (Very High) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the south.

  • 17°C maximum temperature17
    °C maximum temperature
  • 13°C minimum temperature13
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 3 hours of bright sunshine3
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 17°C wind chill17
    °C wind chill
  • Gentle breeze of 14 kph from the South14
    kph wind from S

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Portland weather for Monday 16th June 2025

Expect broken clouds in Portland, Maine with a maximum temperature of 18°C, maximum UV of 5 (Moderate) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the south.

  • 18°C maximum temperature18
    °C maximum temperature
  • 13°C minimum temperature13
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 1 hour of bright sunshine1
    hour 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
  • Gentle breeze of 17 kph from the South17
    kph wind from S

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Portland weather for Tuesday 17th June 2025

Expect mostly cloudy with light rain in Portland, Maine with a maximum temperature of 21°C, maximum UV of 8 (Very High) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 12% chance of some rain and a gentle breeze of 18 kph from the south.

  • 21°C maximum temperature21
    °C maximum temperature
  • 15°C minimum temperature15
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 12% chance of some rain12
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Gentle breeze of 18 kph from the South18
    kph wind from S

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Portland weather for Wednesday 18th June 2025

Expect broken clouds in Portland, Maine with a maximum temperature of 24°C, maximum UV of 7 (High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the south.

  • 24°C maximum temperature24
    °C maximum temperature
  • 17°C minimum temperature17
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 24°C wind chill24
    °C wind chill
  • Gentle breeze of 17 kph from the South17
    kph wind from S

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  • Destinations across Europe, Americas, Asia, Africa & beyond
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Metric (°C / mm)  |  Imperial (°F / inches)

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