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December weather forecast in Chicago

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

	743 mmHg		73%
	7.5 m/s		+7

30 November, Sunday. day, 6°; night, 2°; rain

1 December, mon

	745 mmHg		72%
	7.7 m/s		+7

1 December, Monday. day, 5°; night, 0°; rain

2 December, tue

	746 mmHg		71%
	6.6 m/s		+7

2 December, Tuesday. day, 5°; night, 0°; clear

3 December, wed

	747 mmHg		75%
	6.6 m/s		+6

3 December, Wednesday. day, 5°; night, 1°; partly cloudy

4 December, thu

	747 mmHg		75%
	6.6 m/s		+6

4 December, Thursday. day, 5°; night, 0°; partly cloudy

5 December, fri

	746 mmHg		74%
	7.2 m/s		+6

5 December, Friday. day, 4°; night, 0°; clear

6 December, sat

	747 mmHg		71%
	6.9 m/s		+6

6 December, Saturday. day, 2°; night, -1°; overcast

7 December, sun

	748 mmHg		72%
	6.3 m/s		+6

7 December, Sunday. day, 1°; night, -2°; clear

8 December, mon

	748 mmHg		72%
	6.2 m/s		+6

8 December, Monday. day, 2°; night, -1°; partly cloudy

9 December, tue

	746 mmHg		77%
	6.8 m/s		+6

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

10 December, wed

	746 mmHg		74%
	6.9 m/s		+5

10 December, Wednesday. day, 3°; night, -1°; clear

11 December, thu

	746 mmHg		74%
	6.7 m/s		+5

11 December, Thursday. day, 2°; night, -1°; rain

12 December, fri

	747 mmHg		74%
	6.9 m/s		+5

12 December, Friday. day, 3°; night, -2°; clear

13 December, sat

	748 mmHg		75%
	6.4 m/s		+5

13 December, Saturday. day, 3°; night, -2°; overcast

14 December, sun

	746 mmHg		79%
	6.7 m/s		+5

14 December, Sunday. day, 4°; night, 0°; rain

15 December, mon

	746 mmHg		77%
	6.9 m/s		+5

15 December, Monday. day, 4°; night, 0°; partly cloudy

16 December, tue

	745 mmHg		74%
	6.9 m/s		+5

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

17 December, wed

	746 mmHg		74%
	6.1 m/s		+5

17 December, Wednesday. day, 1°; night, -1°; partly cloudy

18 December, thu

	747 mmHg		74%
	6.5 m/s		+4

18 December, Thursday. day, 1°; night, -3°; overcast

19 December, fri

	747 mmHg		73%
	7 m/s		+5

19 December, Friday. day, 1°; night, -3°; clear

20 December, sat

	747 mmHg		73%
	6.7 m/s		+4

20 December, Saturday. day, 1°; night, -2°; partly cloudy

21 December, sun

	746 mmHg		76%
	6.9 m/s		+4

21 December, Sunday. day, 1°; night, -2°; overcast

22 December, mon

	746 mmHg		76%
	6.8 m/s		+4

22 December, Monday. day, 1°; night, -2°; snow

23 December, tue

	746 mmHg		76%
	7.3 m/s		+4

23 December, Tuesday. day, 2°; night, -2°; rain

24 December, wed

	746 mmHg		76%
	7.1 m/s		+4

24 December, Wednesday. day, 1°; night, -3°; snow

25 December, thu

	747 mmHg		74%
	6.9 m/s		+4

25 December, Thursday. day, 0°; night, -3°; partly cloudy

26 December, fri

	747 mmHg		74%
	6.6 m/s		+4

26 December, Friday. day, 1°; night, -2°; partly cloudy

27 December, sat

	746 mmHg		76%
	6.7 m/s		+4

27 December, Saturday. day, 2°; night, -2°; overcast

28 December, sun

	745 mmHg		75%
	7.2 m/s		+4

28 December, Sunday. day, 3°; night, -2°; rain

29 December, mon

	744 mmHg		79%
	7 m/s		+4

29 December, Monday. day, 2°; night, 0°; overcast

30 December, tue

	745 mmHg		76%
	6.8 m/s		+4

30 December, Tuesday. day, 2°; night, -2°; overcast

31 December, wed

	745 mmHg		76%
	7 m/s		+4

31 December, Wednesday. day, 1°; night, -1°; rain

1 January, thu

	747 mmHg		74%
	7.2 m/s		+3

1 January, Thursday. day, 1°; night, -3°; partly cloudy

2 January, fri

	747 mmHg		75%
	7.5 m/s		+3

2 January, Friday. day, 1°; night, -3°; clear

3 January, sat

	746 mmHg		77%
	6.6 m/s		+3

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

Average data for 10 years

Chicago December

6

sunny days

10

days with precipitation

14

cloudy days

6 sunny days; 10 days with precipitation; 14 cloudy days;

75

%

air humidity

4.9

m/s

WindSW

66

mm of precipitation

(7% of annual average)

+5

°C

Water temperature

air humidity 75%; 66 millimeters of precipitation (7% of annual average); Wind south-westerly 4.9 Meters per second; Water temperature +5°

Weather graphs for December

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

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

S

SW

SW

SW

SW

SW

S

SW

SW

SW

SW

SW

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

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25

26

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28

29

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31

Daytime temperature

Night-time temperature

Cities near you

Indianapolis
Michigan City
Wisconsin Dells
Appleton
Dixon
Ottawa
Iowa City
Washington
Sidney

Cities with similar weather in December

Helsinki
Riga
Tallinn
Stockholm
Reykyavik
Oslo
Yurmala
Toronto
Palanga

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

In December, the weather in Chicago is typically cold. Average daily high temperature in December is about 2 degrees above zero. On average, Chicago has 9 cloudy, 9 partly cloudy, 6 sunny, 5 rainy, and 2 snowy days in December. The rains are usually heavy. December as well as January, February, March, and April is considered the most uncomfortable time to visit Chicago.

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