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.

Sunday
14th Dec
-1

-9

0

1
Monday
15th Dec
-5

-10

6

1
Tuesday
16th Dec
-1

-8

8

1
Wednesday
17th Dec
4

-4

4

1
Thursday
18th Dec
6

-3

3

1

5-day weather forecast updated at 04:01 on Sunday 14th 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 Sunday 14th December 2025

Expect broken clouds in Portland, Maine with a maximum temperature of -1°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 0 cm of snow expected and a moderate breeze of 21 kph from the north.

-1
°C maximum temperature
-9
°C minimum temperature
broken clouds
0
hours of sunshine
1
UV index (Low)
0
cm of snow expected
-7
°C wind chill
21
kph wind from N

Portland weather for Monday 15th December 2025

Expect scattered clouds in Portland, Maine with a maximum temperature of -5°C, maximum UV of 1 (Low) and 6 hours of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 19 kph from the north-west.

-5
°C maximum temperature
-10
°C minimum temperature
scattered clouds
6
hours of sunshine
1
UV index (Low)
0
cm of snow expected
-11
°C wind chill
19
kph wind from NW

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 16 kph from the south-west.

-1
°C maximum temperature
-8
°C minimum temperature
broken clouds
8
hours of sunshine
1
UV index (Low)
0
cm of snow expected
-6
°C wind chill
16
kph wind from SW

Portland weather for Wednesday 17th December 2025

Expect sunshine and showers in Portland, Maine with a maximum temperature of 4°C, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 5% chance of some rain and a moderate breeze of 23 kph from the south-west.

4
°C maximum temperature
-4
°C minimum temperature
sunshine and showers
4
hours of sunshine
1
UV index (Low)
5
% chance of some rain
<2
mm of rainfall expected
-1
°C wind chill
23
kph wind from SW

Portland weather for Thursday 18th December 2025

Expect broken clouds in Portland, Maine with a maximum temperature of 6°C, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 21 kph from the south.