Portland weather live forecast

Today's maximum temperature in Portland is expected to be 8°C. Select a day from the live weather forecast for Portland, Maine, USA for more weather parameters.

Thursday
30th Apr
8

6

1

2
Friday
1st May
14

6

11

6
Saturday
2nd May
11

4

2

5
Sunday
3rd May
11

5

1

2
Monday
4th May
16

3

5

6

5-day weather forecast updated at 04:00 on Friday 1st May 2026 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 Thursday 30th April 2026

Expect mostly cloudy with rain in Portland, Maine with a maximum temperature of 8°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 10-20 mm of rainfall expected with 90% chance of some rain and a light breeze of 11 kph from the east.

8
°C maximum temperature
6
°C minimum temperature
mostly cloudy with rain
1
hour of sunshine
2
UV index (Low)
90
% chance of some rain
<20
mm of rainfall expected
6
°C wind chill
11
kph wind from E

Portland weather for Friday 1st May 2026

Expect scattered clouds in Portland, Maine with a maximum temperature of 14°C, maximum UV of 6 (High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the north-west.

14
°C maximum temperature
6
°C minimum temperature
scattered clouds
11
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
11
kph wind from NW

Portland weather for Saturday 2nd May 2026

Expect mostly cloudy with light rain in Portland, Maine with a maximum temperature of 11°C, maximum UV of 5 (Moderate) and 2 hours of bright sunshine. There are 2-5 mm of rainfall expected with 65% chance of some rain and a light breeze of 10 kph from the south-east.

11
°C maximum temperature
4
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
5
UV index (Moderate)
65
% chance of some rain
<5
mm of rainfall expected
11
°C wind chill
10
kph wind from SE

Portland weather for Sunday 3rd May 2026

Expect mostly cloudy with rain in Portland, Maine with a maximum temperature of 11°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 5-10 mm of rainfall expected with 83% chance of some rain and a light breeze of 12 kph from the north.

11
°C maximum temperature
5
°C minimum temperature
mostly cloudy with rain
1
hour of sunshine
2
UV index (Low)
83
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
12
kph wind from N

Portland weather for Monday 4th May 2026

Expect scattered clouds in Portland, Maine with a maximum temperature of 16°C, maximum UV of 6 (High) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the south-west.