Portland weather live forecast

Today's maximum temperature in Portland is expected to be 15°C. Select a day from the live weather forecast for Portland, Maine, USA for more weather parameters.

Thursday
7th May
15

8

8

3
Friday
8th May
13

5

7

4
Saturday
9th May
12

6

0

4
Sunday
10th May
16

9

3

6
Monday
11th May
12

8

2

0

5-day weather forecast updated at 04:00 on Thursday 7th 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 7th May 2026

Expect sunshine and showers in Portland, Maine with a maximum temperature of 15°C, maximum UV of 3 (Moderate) and 8 hours of bright sunshine. There are 2-5 mm of rainfall expected with 5% chance of some rain and a gentle breeze of 13 kph from the north-west.

15
°C maximum temperature
8
°C minimum temperature
sunshine and showers
8
hours of sunshine
3
UV index (Moderate)
5
% chance of some rain
<5
mm of rainfall expected
15
°C wind chill
13
kph wind from NW

Portland weather for Friday 8th May 2026

Expect scattered clouds in Portland, Maine with a maximum temperature of 13°C, maximum UV of 4 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the west.

13
°C maximum temperature
5
°C minimum temperature
scattered clouds
7
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
13
°C wind chill
17
kph wind from W

Portland weather for Saturday 9th May 2026

Expect broken clouds in Portland, Maine with a maximum temperature of 12°C, maximum UV of 4 (Moderate) and no hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the south.

12
°C maximum temperature
6
°C minimum temperature
broken clouds
0
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
12
°C wind chill
16
kph wind from S

Portland weather for Sunday 10th May 2026

Expect mostly cloudy with light rain in Portland, Maine with a maximum temperature of 16°C, maximum UV of 6 (High) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 31% chance of some rain and a gentle breeze of 15 kph from the south.

16
°C maximum temperature
9
°C minimum temperature
mostly cloudy with light rain
3
hours of sunshine
6
UV index (High)
31
% chance of some rain
<2
mm of rainfall expected
16
°C wind chill
15
kph wind from S

Portland weather for Monday 11th May 2026

Expect mostly cloudy with rain in Portland, Maine with a maximum temperature of 12°C and 2 hours of bright sunshine. There are 10-20 mm of rainfall expected with 79% chance of some rain and a light breeze of 11 kph from the north.