Portland weather live forecast

Today's maximum temperature in Portland is expected to be 41°F. Select a day from the live weather forecast for Portland, Maine, USA for more weather parameters.

Thursday
18th Dec
41

28

7

1
Friday
19th Dec
54

34

0

0
Saturday
20th Dec
34

27

8

1
Sunday
21st Dec
41

25

5

1
Monday
22nd Dec
25

19

7

1

5-day weather forecast updated at 04:00 on Thursday 18th December 2025 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 18th December 2025

Expect sunshine and showers in Portland, Maine with a maximum temperature of 41°F, maximum UV of 1 (Low) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 27% chance of some rain and a gentle breeze of 11 mph from the south.

41
°F maximum temperature
28
°F minimum temperature
sunshine and showers
7
hours of sunshine
1
UV index (Low)
27
% chance of some rain
<2
mm of rainfall expected
36
°F wind chill
11
mph wind from S

Portland weather for Friday 19th December 2025

Expect mostly cloudy with rain in Portland, Maine with a maximum temperature of 54°F and no hours of bright sunshine. There are 10-20 mm of rainfall expected with 99% chance of some rain and a fresh breeze of 24 mph from the south.

54
°F maximum temperature
34
°F minimum temperature
mostly cloudy with rain
0
hours of sunshine
0
UV index (None)
99
% chance of some rain
<20
mm of rainfall expected
54
°F wind chill
24
mph wind from S

Portland weather for Saturday 20th December 2025

Expect scattered clouds in Portland, Maine with a maximum temperature of 34°F, maximum UV of 1 (Low) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 18 mph from the west.

34
°F maximum temperature
27
°F minimum temperature
scattered clouds
8
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
23
°F wind chill
18
mph wind from W

Portland weather for Sunday 21st December 2025

Expect sunshine and showers in Portland, Maine with a maximum temperature of 41°F, maximum UV of 1 (Low) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 21% chance of some rain and a moderate breeze of 16 mph from the west.

41
°F maximum temperature
25
°F minimum temperature
sunshine and showers
5
hours of sunshine
1
UV index (Low)
21
% chance of some rain
<2
mm of rainfall expected
34
°F wind chill
16
mph wind from W

Portland weather for Monday 22nd December 2025

Expect scattered clouds in Portland, Maine with a maximum temperature of 25°F, maximum UV of 1 (Low) and 7 hours of bright sunshine. There are 0 cm of snow expected and a moderate breeze of 14 mph from the north-west.