Portland weather live forecast

Today's maximum temperature in Portland is expected to be -1°C. Select a day from the live weather forecast for Portland, Maine, USA for more weather parameters.

Tuesday
16th Dec
-1

-7

8

1
Wednesday
17th Dec
3

-3

1

1
Thursday
18th Dec
6

-2

6

1
Friday
19th Dec
11

-1

1

0
Saturday
20th Dec
-1

-4

6

1

5-day weather forecast updated at 04:00 on Tuesday 16th 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 Tuesday 16th December 2025

Expect broken clouds in Portland, Maine with a maximum temperature of -1°C, maximum UV of 1 (Low) and 8 hours of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 18 kph from the south-west.

-1
°C maximum temperature
-7
°C minimum temperature
broken clouds
8
hours of sunshine
1
UV index (Low)
0
cm of snow expected
-6
°C wind chill
18
kph wind from SW

Portland weather for Wednesday 17th December 2025

Expect broken clouds in Portland, Maine with a maximum temperature of 3°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 22 kph from the south-west.

3
°C maximum temperature
-3
°C minimum temperature
broken clouds
1
hour of sunshine
1
UV index (Low)
0
mm of rainfall expected
-2
°C wind chill
22
kph wind from SW

Portland weather for Thursday 18th December 2025

Expect scattered clouds in Portland, Maine with a maximum temperature of 6°C, maximum UV of 1 (Low) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the south.

6
°C maximum temperature
-2
°C minimum temperature
scattered clouds
6
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
3
°C wind chill
18
kph wind from S

Portland weather for Friday 19th December 2025

Expect mostly cloudy with rain in Portland, Maine with a maximum temperature of 11°C and 1 hour of bright sunshine. There are 10-20 mm of rainfall expected with 89% chance of some rain and a fresh breeze of 34 kph from the south.

11
°C maximum temperature
-1
°C minimum temperature
mostly cloudy with rain
1
hour of sunshine
0
UV index (None)
89
% chance of some rain
<20
mm of rainfall expected
11
°C wind chill
34
kph wind from S

Portland weather for Saturday 20th December 2025

Expect broken clouds in Portland, Maine with a maximum temperature of -1°C, maximum UV of 1 (Low) and 6 hours of bright sunshine. There are 0 cm of snow expected and a moderate breeze of 26 kph from the west.