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Portland weather live forecast
Tomorrow's maximum temperature in Portland is expected to be 14°C.
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Sunday
4th May -
Monday
5th May -
Tuesday
6th May -
Wednesday
7th May -
Thursday
8th May
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.
- °C maximum temperature
- °C minimum temperature
- mostly cloudy with light rain
- hours of sunshine
- UV index (Moderate)
- % chance of some rain
- mm of rainfall expected
- no heat & humidity
- kph wind from NE
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.
- °C maximum temperature
- °C minimum temperature
- cloudy with some rain
- hours of sunshine
- UV index (Low)
- % chance of some rain
- mm of rainfall expected
- °C wind chill
- kph wind from E
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.
- °C maximum temperature
- °C minimum temperature
- cloudy with some rain
- hours of sunshine
- UV index (Low)
- % chance of some rain
- mm of rainfall expected
- °C wind chill
- kph wind from E
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.
- °C maximum temperature
- °C minimum temperature
- mostly cloudy with rain
- hours of sunshine
- UV index (Moderate)
- % chance of some rain
- mm of rainfall expected
- no heat & humidity
- kph wind from S
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.
- °C maximum temperature
- °C minimum temperature
- sunshine and showers
- hours of sunshine
- UV index (Low)
- % chance of some rain
- mm of rainfall expected
- no heat & humidity
- kph wind from N
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Metric (°C / mm) | Imperial (°F / inches)
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