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December weather forecast in Keystone

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

	511 mmHg		69%
	3.9 m/s

30 November, Sunday. day, -2°; night, -15°; clear

1 December, mon

	512 mmHg		69%
	4.1 m/s

1 December, Monday. day, -2°; night, -13°; clear

2 December, tue

	512 mmHg		70%
	3.8 m/s

2 December, Tuesday. day, -1°; night, -13°; clear

3 December, wed

	512 mmHg		70%
	3.7 m/s

3 December, Wednesday. day, -2°; night, -14°; clear

4 December, thu

	512 mmHg		69%
	3.7 m/s

4 December, Thursday. day, -2°; night, -14°; clear

5 December, fri

	512 mmHg		69%
	3.9 m/s

5 December, Friday. day, -3°; night, -14°; snow

6 December, sat

	512 mmHg		72%
	3.5 m/s

6 December, Saturday. day, -3°; night, -14°; partly cloudy

7 December, sun

	512 mmHg		72%
	3.7 m/s

7 December, Sunday. day, -3°; night, -14°; partly cloudy

8 December, mon

	511 mmHg		73%
	3.7 m/s

8 December, Monday. day, -3°; night, -15°; snow

9 December, tue

	512 mmHg		72%
	4.19 m/s

9 December, Tuesday. day, -4°; night, -14°; snow

10 December, wed

	511 mmHg		70%
	3.9 m/s

10 December, Wednesday. day, -3°; night, -16°; clear

11 December, thu

	511 mmHg		71%
	3.8 m/s

11 December, Thursday. day, -3°; night, -14°; clear

12 December, fri

	511 mmHg		71%
	3.7 m/s

12 December, Friday. day, -3°; night, -15°; clear

13 December, sat

	511 mmHg		71%
	3.8 m/s

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

14 December, sun

	511 mmHg		74%
	3.9 m/s

14 December, Sunday. day, -2°; night, -13°; snow

15 December, mon

	511 mmHg		72%
	4 m/s

15 December, Monday. day, -4°; night, -14°; snow

16 December, tue

	511 mmHg		70%
	3.8 m/s

16 December, Tuesday. day, -5°; night, -16°; clear

17 December, wed

	511 mmHg		70%
	3.8 m/s

17 December, Wednesday. day, -4°; night, -16°; clear

18 December, thu

	511 mmHg		72%
	3.6 m/s

18 December, Thursday. day, -5°; night, -16°; partly cloudy

19 December, fri

	511 mmHg		71%
	3.8 m/s

19 December, Friday. day, -4°; night, -15°; clear

20 December, sat

	511 mmHg		69%
	3.7 m/s

20 December, Saturday. day, -3°; night, -14°; clear

21 December, sun

	510 mmHg		72%
	3.8 m/s

21 December, Sunday. day, -4°; night, -13°; snow

22 December, mon

	510 mmHg		72%
	3.9 m/s

22 December, Monday. day, -4°; night, -15°; overcast

23 December, tue

	511 mmHg		74%
	3.8 m/s

23 December, Tuesday. day, -5°; night, -15°; snow

24 December, wed

	511 mmHg		72%
	3.6 m/s

24 December, Wednesday. day, -5°; night, -16°; partly cloudy

25 December, thu

	511 mmHg		72%
	3.6 m/s

25 December, Thursday. day, -4°; night, -15°; partly cloudy

26 December, fri

	510 mmHg		72%
	3.7 m/s

26 December, Friday. day, -5°; night, -15°; snow

27 December, sat

	511 mmHg		71%
	3.8 m/s

27 December, Saturday. day, -5°; night, -15°; snow

28 December, sun

	511 mmHg		70%
	3.8 m/s

28 December, Sunday. day, -5°; night, -14°; snow

29 December, mon

	511 mmHg		72%
	4 m/s

29 December, Monday. day, -4°; night, -14°; snow

30 December, tue

	510 mmHg		71%
	4.19 m/s

30 December, Tuesday. day, -5°; night, -14°; clear

31 December, wed

	510 mmHg		72%
	3.6 m/s

31 December, Wednesday. day, -4°; night, -15°; clear

1 January, thu

	510 mmHg		71%
	3.8 m/s

1 January, Thursday. day, -5°; night, -15°; clear

2 January, fri

	511 mmHg		70%
	3.3 m/s

2 January, Friday. day, -5°; night, -16°; clear

3 January, sat

	511 mmHg		70%
	3.5 m/s

3 January, Saturday. day, -4°; night, -14°; clear

Average data for 10 years

Keystone December

13

sunny days

11

days with precipitation

4

cloudy days

13 sunny days; 11 days with precipitation; 4 cloudy days;

71

%

air humidity

2.4

m/s

WindSW

47

mm of precipitation

(7% of annual average)

air humidity 71%; 47 millimeters of precipitation (7% of annual average); Wind south-westerly 2.4 Meters per second

Weather graphs for December

TemperaturePrecipitation chance, %Humidity, %Wind, m/sPressure, mmHg

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

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

24

25

26

27

28

29

30

31

Daytime temperature

Night-time temperature

Cities near you

Denver
Colorado Springs
Breckenridge
Lakewood
Steamboat Springs
Telluride
Aspen
Fort Collins
Aurora

Cities with similar weather in December

Astana
Petropavlovsk
Ust-Kamenogorsk
Karaganda
Uralsk
Pavlodar
Aktobe
Kostanai
Kokshetau

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

In December, the weather in Keystone is typically freezing. Average daily high temperature in December is about 4 degrees below zero. On average, Keystone has 13 sunny, 11 snowy, 6 partly cloudy, and 1 cloudy day in December. The snowfalls are usually light. December as well as January is considered the most comfortable time to visit Keystone.

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