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.

Friday
8th May
12

7

7

5
Saturday
9th May
12

5

4

5
Sunday
10th May
16

9

3

5
Monday
11th May
10

7

0

1
Tuesday
12th May
14

5

7

6

5-day weather forecast updated at 04:00 on Friday 8th 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 Friday 8th May 2026

Expect scattered clouds in Portland, Maine with a maximum temperature of 12°C, maximum UV of 5 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the west.

12
°C maximum temperature
7
°C minimum temperature
scattered clouds
7
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
15
kph wind from W

Portland weather for Saturday 9th May 2026

Expect mostly cloudy with rain in Portland, Maine with a maximum temperature of 12°C, maximum UV of 5 (Moderate) and 4 hours of bright sunshine. There are 5-10 mm of rainfall expected with 92% chance of some rain and a gentle breeze of 17 kph from the south.

12
°C maximum temperature
5
°C minimum temperature
mostly cloudy with rain
4
hours of sunshine
5
UV index (Moderate)
92
% chance of some rain
<10
mm of rainfall expected
12
°C wind chill
17
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 5 (Moderate) and 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 52% chance of some rain and a light breeze of 12 kph from the south.

16
°C maximum temperature
9
°C minimum temperature
mostly cloudy with light rain
3
hours of sunshine
5
UV index (Moderate)
52
% chance of some rain
<5
mm of rainfall expected
16
°C wind chill
12
kph wind from S

Portland weather for Monday 11th May 2026

Expect overcast skies in Portland, Maine with a maximum temperature of 10°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the north-west.

10
°C maximum temperature
7
°C minimum temperature
overcast skies
0
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
0
no heat & humidity
10
kph wind from NW

Portland weather for Tuesday 12th May 2026

Expect broken clouds in Portland, Maine with a maximum temperature of 14°C, maximum UV of 6 (High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the north-west.