USA

Portland weather in December

Weather in Portland: December


	Average day temperature:	44.1°F
	Average night temperature:	38.9°F

	Number of sunny days:	5 days
	Day length:	8.7 - 9.0 hours

	Number of rainy days:	8 days
	Precipitation totals:	4.2 in.

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14 days
forecast

Portland

weather in
January

Portland

January
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May
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September
October
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December

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2024

2023

2022

Day temperature

Night temperature

The highest day temperature during December of 2024 was 54°F. At the same time the lowest night temperature was 31°F. Daily and nightly averages during December were 46.2°F and 41.3°F.

	Sunny days
	Partly cloudy days
	Cloudy days

13%

74%

Mostly all days in December are cloudy but sunny and partly cloudy days are also possible.

jan

feb

mar

apr

may

jun

jul

aug

sep

oct

nov

dec

0.0

0.9

1.8

2.7

3.5

4.4

5.3

6.2

7.1

3.3

2.9

1.8

2.0

3.8

3.1

3.9

5.2

3.9

3.3

2.9

1.8

2.0

3.8

3.1

3.9

5.2

Precipitation total value in Portland in December is 3.9 in. Other months of the year show relatively similar values.

jan

feb

mar

apr

may

jun

jul

aug

sep

oct

nov

dec

0.0

1.0

2.0

3.0

4.1

5.1

6.1

7.1

5.2

4.7

4.1

4.3

4.6

4.8

4.6

5.1

5.4

5.8

5.9

5.4

5.2

4.7

4.1

4.3

4.6

4.8

4.6

5.1

5.4

5.8

5.9

The average wind speed value in December is 5.4 mph It makes December one of the most windy months of the year.

jan

feb

mar

apr

may

jun

jul

aug

sep

oct

nov

dec

0.0

2.1

4.3

6.4

8.6

10.7

12.8

15.0

2.6

5.6

8.3

10.6

12.5

9.7

7.1

5.5

3.6

2.8

2.9

2.0

2.6

5.6

8.3

10.6

12.5

9.7

7.1

5.5

3.6

2.8

2.9

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in December is: 2.0.