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December weather forecast in Coos Bay

30 days Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

30 days Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Sun

Sunday

Mon

Monday

Tue

Tuesday

Wed

Wednesday

Thu

Thursday

Fri

Friday

Sat

Saturday

30 November, sun

	760 mmHg		85%
	4.4 m/s		+12

30 November, Sunday. day, 10°; night, 9°; rain

1 December, mon

	758 mmHg		82%
	4.6 m/s		+12

1 December, Monday. day, 10°; night, 8°; rain

2 December, tue

	758 mmHg		81%
	4.4 m/s		+12

2 December, Tuesday. day, 9°; night, 8°; partly cloudy

3 December, wed

	762 mmHg		80%
	3.7 m/s		+12

3 December, Wednesday. day, 9°; night, 7°; partly cloudy

4 December, thu

	760 mmHg		75%
	4.6 m/s		+12

4 December, Thursday. day, 10°; night, 8°; rain

5 December, fri

	760 mmHg		72%
	4 m/s		+11

5 December, Friday. day, 9°; night, 7°; partly cloudy

6 December, sat

	760 mmHg		73%
	5.3 m/s		+11

6 December, Saturday. day, 9°; night, 6°; rain

7 December, sun

	761 mmHg		77%
	5.4 m/s		+11

7 December, Sunday. day, 8°; night, 7°; partly cloudy

8 December, mon

	760 mmHg		74%
	5 m/s		+11

8 December, Monday. day, 10°; night, 7°; partly cloudy

9 December, tue

	759 mmHg		74%
	4 m/s		+11

9 December, Tuesday. day, 9°; night, 7°; rain

10 December, wed

	758 mmHg		79%
	4.9 m/s		+11

10 December, Wednesday. day, 9°; night, 8°; rain

11 December, thu

	758 mmHg		83%
	5.6 m/s		+11

11 December, Thursday. day, 9°; night, 8°; clear

12 December, fri

	758 mmHg		85%
	4.9 m/s		+11

12 December, Friday. day, 8°; night, 7°; clear

13 December, sat

	758 mmHg		82%
	3.7 m/s		+11

13 December, Saturday. day, 8°; night, 7°; rain

14 December, sun

	758 mmHg		87%
	4 m/s		+11

14 December, Sunday. day, 8°; night, 7°; rain

15 December, mon

	758 mmHg		87%
	4 m/s		+11

15 December, Monday. day, 8°; night, 6°; overcast

16 December, tue

	757 mmHg		81%
	5.3 m/s		+11

16 December, Tuesday. day, 9°; night, 7°; rain

17 December, wed

	758 mmHg		81%
	6 m/s		+11

17 December, Wednesday. day, 9°; night, 7°; rain

18 December, thu

	757 mmHg		82%
	5 m/s		+11

18 December, Thursday. day, 8°; night, 6°; rain

19 December, fri

	757 mmHg		87%
	5.8 m/s		+11

19 December, Friday. day, 8°; night, 8°; rain

20 December, sat

	758 mmHg		87%
	6.5 m/s		+11

20 December, Saturday. day, 8°; night, 6°; rain

21 December, sun

	759 mmHg		83%
	4.5 m/s		+11

21 December, Sunday. day, 9°; night, 7°; clear

22 December, mon

	759 mmHg		81%
	4.4 m/s		+11

22 December, Monday. day, 8°; night, 7°; clear

23 December, tue

	757 mmHg		82%
	4.5 m/s		+11

23 December, Tuesday. day, 8°; night, 6°; clear

24 December, wed

	759 mmHg		81%
	4.1 m/s		+11

24 December, Wednesday. day, 8°; night, 6°; clear

25 December, thu

	759 mmHg		82%
	3.7 m/s		+11

25 December, Thursday. day, 8°; night, 7°; rain

26 December, fri

	761 mmHg		82%
	5.6 m/s		+11

26 December, Friday. day, 8°; night, 7°; rain

27 December, sat

	760 mmHg		87%
	6 m/s		+11

27 December, Saturday. day, 9°; night, 7°; rain

28 December, sun

	759 mmHg		85%
	5.6 m/s		+11

28 December, Sunday. day, 8°; night, 6°; rain

29 December, mon

	761 mmHg		80%
	3.7 m/s		+10

29 December, Monday. day, 8°; night, 5°; rain

30 December, tue

	762 mmHg		76%
	5.5 m/s		+11

30 December, Tuesday. day, 8°; night, 5°; rain

31 December, wed

	762 mmHg		76%
	5.5 m/s		+11

31 December, Wednesday. day, 8°; night, 5°; rain

1 January, thu

	759 mmHg		77%
	5.3 m/s		+11

1 January, Thursday. day, 9°; night, 7°; clear

2 January, fri

	758 mmHg		76%
	4 m/s		+10

2 January, Friday. day, 8°; night, 6°; partly cloudy

3 January, sat

	758 mmHg		83%
	4.8 m/s		+10

3 January, Saturday. day, 8°; night, 7°; overcast

Average data for 10 years

Coos Bay December

6

sunny days

19

days with precipitation

6

cloudy days

6 sunny days; 19 days with precipitation; 6 cloudy days;

81

%

air humidity

3.4

m/s

WindS

194

mm of precipitation

(17% of annual average)

+11

°C

Water temperature

air humidity 81%; 194 millimeters of precipitation (17% of annual average); Wind southerly 3.4 Meters per second; Water temperature +11°

Weather graphs for December

TemperatureWater temperaturePrecipitation chance, %Humidity, %Wind, m/sPressure, mmHg

SE

SE

E

E

SE

S

S

S

S

S

SW

SW

S

S

SE

S

SW

S

S

SW

S

S

SE

S

SE

S

S

S

SE

E

E

1

Average data for 10 years

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Daytime temperature

Night-time temperature

Cities near you

Portland
Salem
Vancouver
Aberdeen
Eugene
Lake Oswego
Newport
Eureka
Cannon Beach

Cities with similar weather in December

Istanbul
Rimini
Tokyo
Venice
New Athos
Thessaloniki
Tivat
Shanghai
Gudauta

The weather forecast for December 2025 is based on historical data from the past 10 years.

December in Coos Bay is the coldest month of the year. In December, the weather in Coos Bay is typically cold. Average daily high temperature in December is about 9 degrees above zero. On average, Coos Bay has 19 rainy, 6 sunny, 5 partly cloudy, and 1 cloudy day in December. The rains are usually heavy. December as well as January, February, March, and April is considered the most uncomfortable time to visit Coos Bay.

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