Portland weather live forecast

Today's maximum temperature in Portland is expected to be 12°C. Select a day from the live weather forecast for Portland, Maine, USA for more weather parameters.

Sunday
3rd May
12

6

2

3
Monday
4th May
18

4

8

5
Tuesday
5th May
21

9

9

6
Wednesday
6th May
18

12

1

2
Thursday
7th May
14

9

3

2

5-day weather forecast updated at 04:00 on Sunday 3rd 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 Sunday 3rd May 2026

Expect mostly cloudy with light rain in Portland, Maine with a maximum temperature of 12°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 24% chance of some rain and a moderate breeze of 21 kph from the north.

12
°C maximum temperature
6
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
3
UV index (Moderate)
24
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
21
kph wind from N

Portland weather for Monday 4th May 2026

Expect scattered clouds in Portland, Maine with a maximum temperature of 18°C, maximum UV of 5 (Moderate) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 21 kph from the south-west.

18
°C maximum temperature
4
°C minimum temperature
scattered clouds
8
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
18
°C wind chill
21
kph wind from SW

Portland weather for Tuesday 5th May 2026

Expect scattered clouds in Portland, Maine with a maximum temperature of 21°C, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 22 kph from the south.

21
°C maximum temperature
9
°C minimum temperature
scattered clouds
9
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
21
°C wind chill
22
kph wind from S

Portland weather for Wednesday 6th May 2026

Expect mostly cloudy with rain in Portland, Maine with a maximum temperature of 18°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 10-20 mm of rainfall expected with 82% chance of some rain and a gentle breeze of 19 kph from the south.

18
°C maximum temperature
12
°C minimum temperature
mostly cloudy with rain
1
hour of sunshine
2
UV index (Low)
82
% chance of some rain
<20
mm of rainfall expected
18
°C wind chill
19
kph wind from S

Portland weather for Thursday 7th May 2026

Expect mostly cloudy with rain in Portland, Maine with a maximum temperature of 14°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 5-10 mm of rainfall expected with 82% chance of some rain and a gentle breeze of 13 kph from the north-west.