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December weather forecast in Oswego

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

	755 mmHg		77%
	8.89 m/s		+8

30 November, Sunday. day, 7°; night, 3°; rain

1 December, mon

	754 mmHg		77%
	10.5 m/s		+8

1 December, Monday. day, 6°; night, 3°; rain

2 December, tue

	756 mmHg		77%
	9.89 m/s		+8

2 December, Tuesday. day, 5°; night, 2°; rain

3 December, wed

	756 mmHg		76%
	9.3 m/s		+7

3 December, Wednesday. day, 5°; night, 2°; clear

4 December, thu

	757 mmHg		75%
	9.2 m/s		+7

4 December, Thursday. day, 5°; night, 3°; rain

5 December, fri

	757 mmHg		75%
	9.1 m/s		+7

5 December, Friday. day, 5°; night, 2°; rain

6 December, sat

	756 mmHg		75%
	9.5 m/s		+7

6 December, Saturday. day, 4°; night, 2°; rain

7 December, sun

	756 mmHg		76%
	9.3 m/s		+6

7 December, Sunday. day, 3°; night, 1°; rain

8 December, mon

	759 mmHg		74%
	8.7 m/s		+6

8 December, Monday. day, 3°; night, 0°; partly cloudy

9 December, tue

	759 mmHg		75%
	8.6 m/s		+7

9 December, Tuesday. day, 4°; night, 0°; overcast

10 December, wed

	756 mmHg		76%
	9.39 m/s		+6

10 December, Wednesday. day, 5°; night, 2°; partly cloudy

11 December, thu

	756 mmHg		78%
	9.39 m/s		+6

11 December, Thursday. day, 4°; night, 1°; rain

12 December, fri

	757 mmHg		77%
	10 m/s		+6

12 December, Friday. day, 4°; night, 1°; rain

13 December, sat

	759 mmHg		75%
	8.8 m/s		+6

13 December, Saturday. day, 3°; night, 0°; partly cloudy

14 December, sun

	759 mmHg		78%
	9.1 m/s		+6

14 December, Sunday. day, 3°; night, 0°; rain

15 December, mon

	758 mmHg		77%
	9.6 m/s		+6

15 December, Monday. day, 4°; night, 0°; rain

16 December, tue

	757 mmHg		77%
	9.7 m/s		+6

16 December, Tuesday. day, 4°; night, 1°; rain

17 December, wed

	755 mmHg		79%
	9.3 m/s		+5

17 December, Wednesday. day, 4°; night, 1°; rain

18 December, thu

	756 mmHg		76%
	9.1 m/s		+5

18 December, Thursday. day, 3°; night, 0°; overcast

19 December, fri

	757 mmHg		75%
	9.3 m/s		+5

19 December, Friday. day, 2°; night, 0°; overcast

20 December, sat

	758 mmHg		77%
	8.7 m/s		+5

20 December, Saturday. day, 2°; night, 0°; overcast

21 December, sun

	757 mmHg		76%
	8.8 m/s		+5

21 December, Sunday. day, 3°; night, 0°; overcast

22 December, mon

	757 mmHg		77%
	9.7 m/s		+5

22 December, Monday. day, 3°; night, 0°; rain

23 December, tue

	757 mmHg		79%
	9.89 m/s		+5

23 December, Tuesday. day, 3°; night, 0°; rain

24 December, wed

	756 mmHg		77%
	9.7 m/s		+5

24 December, Wednesday. day, 3°; night, 0°; rain

25 December, thu

	757 mmHg		78%
	9.5 m/s		+5

25 December, Thursday. day, 2°; night, 0°; overcast

26 December, fri

	758 mmHg		76%
	9.5 m/s		+5

26 December, Friday. day, 2°; night, 0°; snow

27 December, sat

	757 mmHg		78%
	9.1 m/s		+6

27 December, Saturday. day, 2°; night, 0°; snow

28 December, sun

	756 mmHg		78%
	9.2 m/s		+5

28 December, Sunday. day, 3°; night, 0°; rain

29 December, mon

	755 mmHg		78%
	9.1 m/s		+5

29 December, Monday. day, 3°; night, 0°; rain

30 December, tue

	755 mmHg		78%
	9.39 m/s		+5

30 December, Tuesday. day, 3°; night, 0°; snow

31 December, wed

	756 mmHg		79%
	9.2 m/s		+5

31 December, Wednesday. day, 2°; night, 0°; snow

1 January, thu

	757 mmHg		78%
	9.7 m/s		+4

1 January, Thursday. day, 2°; night, 0°; rain

2 January, fri

	757 mmHg		78%
	9.7 m/s		+4

2 January, Friday. day, 2°; night, -1°; rain

3 January, sat

	757 mmHg		80%
	9.3 m/s		+4

3 January, Saturday. day, 1°; night, -1°; rain

Average data for 10 years

Oswego December

1

sunny day

21

days with precipitation

20

cloudy days

1 sunny day; 21 days with precipitation; 20 cloudy days;

77

%

air humidity

6.9

m/s

WindSW

142

mm of precipitation

(11% of annual average)

+6

°C

Water temperature

air humidity 77%; 142 millimeters of precipitation (11% of annual average); Wind south-westerly 6.9 Meters per second; Water temperature +6°

Weather graphs for December

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

SW

SW

SW

SW

SW

SW

SW

SW

S

SW

SW

SW

SW

S

SW

S

SW

SW

SW

SW

SW

SW

SW

SW

S

SW

SW

SW

SW

SW

SW

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

New York
Toronto
Ottawa
Montreal
Philadelphia
Colchester
Jamaica
Brooklyn
Burlington

Cities with similar weather in December

Helsinki
Riga
Tallinn
Stockholm
Bellingshausen Station
Reykyavik
Oslo
Yurmala
Aktau

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

In December, the weather in Oswego is typically cold. Average daily high temperature in December is about 3 degrees above zero. On average, Oswego has 12 cloudy, 10 rainy, 4 snowy, 4 partly cloudy, and 1 sunny 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 Oswego.

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