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.

Thursday
16th Apr
12

8

0

6
Friday
17th Apr
14

9

1

4
Saturday
18th Apr
11

7

0

1
Sunday
19th Apr
9

3

2

1
Monday
20th Apr
5

-1

6

6

5-day weather forecast updated at 04:00 on Thursday 16th April 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 16th April 2026

Expect isolated thunderstorms in Portland, Maine with a maximum temperature of 12°C, maximum UV of 6 (High) and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 60% chance of some rain and a light breeze of 8 kph from the east.

12
°C maximum temperature
8
°C minimum temperature
isolated thunderstorms
0
hours of sunshine
6
UV index (High)
60
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
8
kph wind from E

Portland weather for Friday 17th April 2026

Expect mostly cloudy with light rain in Portland, Maine with a maximum temperature of 14°C, maximum UV of 4 (Moderate) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 59% chance of some rain and a light breeze of 9 kph from the north-east.

14
°C maximum temperature
9
°C minimum temperature
mostly cloudy with light rain
1
hour of sunshine
4
UV index (Moderate)
59
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
9
kph wind from NE

Portland weather for Saturday 18th April 2026

Expect overcast with light rain in Portland, Maine with a maximum temperature of 11°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 0-2 mm of rainfall expected with 11% chance of some rain and a gentle breeze of 13 kph from the east.

11
°C maximum temperature
7
°C minimum temperature
overcast with light rain
0
hours of sunshine
1
UV index (Low)
11
% chance of some rain
<2
mm of rainfall expected
11
°C wind chill
13
kph wind from E

Portland weather for Sunday 19th April 2026

Expect mostly cloudy with rain in Portland, Maine with a maximum temperature of 9°C, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 10-20 mm of rainfall expected with 89% chance of some rain and a gentle breeze of 14 kph from the north-west.

9
°C maximum temperature
3
°C minimum temperature
mostly cloudy with rain
2
hours of sunshine
1
UV index (Low)
89
% chance of some rain
<20
mm of rainfall expected
6
°C wind chill
14
kph wind from NW

Portland weather for Monday 20th April 2026

Expect sunshine and showers in Portland, Maine with a maximum temperature of 5°C, maximum UV of 6 (High) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 16% chance of some rain and a moderate breeze of 20 kph from the north-west.