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December weather forecast in Missoula

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

	636 mmHg		75%
	2.2 m/s

30 November, Sunday. day, 0°; night, -5°; overcast

1 December, mon

	635 mmHg		77%
	2.5 m/s

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

2 December, tue

	635 mmHg		76%
	2.6 m/s

2 December, Tuesday. day, 1°; night, -5°; rain

3 December, wed

	637 mmHg		76%
	2.5 m/s

3 December, Wednesday. day, 0°; night, -6°; partly cloudy

4 December, thu

	638 mmHg		73%
	2.5 m/s

4 December, Thursday. day, 0°; night, -7°; clear

5 December, fri

	637 mmHg		74%
	2.4 m/s

5 December, Friday. day, 0°; night, -8°; clear

6 December, sat

	637 mmHg		73%
	2.3 m/s

6 December, Saturday. day, -1°; night, -8°; clear

7 December, sun

	636 mmHg		74%
	2.3 m/s

7 December, Sunday. day, -1°; night, -8°; clear

8 December, mon

	636 mmHg		76%
	2.4 m/s

8 December, Monday. day, -1°; night, -9°; clear

9 December, tue

	637 mmHg		74%
	2.5 m/s

9 December, Tuesday. day, -1°; night, -8°; partly cloudy

10 December, wed

	637 mmHg		75%
	2.4 m/s

10 December, Wednesday. day, 0°; night, -7°; rain

11 December, thu

	636 mmHg		75%
	2 m/s

11 December, Thursday. day, 0°; night, -6°; overcast

12 December, fri

	635 mmHg		75%
	2.3 m/s

12 December, Friday. day, 0°; night, -5°; overcast

13 December, sat

	634 mmHg		77%
	2.5 m/s

13 December, Saturday. day, 0°; night, -6°; rain

14 December, sun

	635 mmHg		78%
	2.5 m/s

14 December, Sunday. day, 0°; night, -6°; rain

15 December, mon

	636 mmHg		77%
	2.6 m/s

15 December, Monday. day, 0°; night, -7°; rain

16 December, tue

	637 mmHg		76%
	2.4 m/s

16 December, Tuesday. day, -1°; night, -8°; overcast

17 December, wed

	636 mmHg		76%
	2.5 m/s

17 December, Wednesday. day, -1°; night, -8°; partly cloudy

18 December, thu

	636 mmHg		74%
	2.4 m/s

18 December, Thursday. day, -1°; night, -9°; partly cloudy

19 December, fri

	636 mmHg		77%
	2.4 m/s

19 December, Friday. day, -1°; night, -8°; overcast

20 December, sat

	635 mmHg		78%
	2.4 m/s

20 December, Saturday. day, -1°; night, -8°; snow

21 December, sun

	634 mmHg		79%
	2.5 m/s

21 December, Sunday. day, -1°; night, -8°; snow

22 December, mon

	635 mmHg		80%
	2.3 m/s

22 December, Monday. day, -3°; night, -9°; partly cloudy

23 December, tue

	636 mmHg		77%
	2.3 m/s

23 December, Tuesday. day, -3°; night, -10°; snow

24 December, wed

	636 mmHg		77%
	2.2 m/s

24 December, Wednesday. day, -2°; night, -9°; partly cloudy

25 December, thu

	636 mmHg		76%
	2 m/s

25 December, Thursday. day, -2°; night, -9°; partly cloudy

26 December, fri

	635 mmHg		76%
	2.2 m/s

26 December, Friday. day, -2°; night, -9°; partly cloudy

27 December, sat

	634 mmHg		78%
	2.4 m/s

27 December, Saturday. day, -2°; night, -9°; snow

28 December, sun

	635 mmHg		78%
	2.5 m/s

28 December, Sunday. day, -1°; night, -7°; snow

29 December, mon

	634 mmHg		80%
	2.4 m/s

29 December, Monday. day, -1°; night, -7°; snow

30 December, tue

	634 mmHg		79%
	2.4 m/s

30 December, Tuesday. day, -1°; night, -9°; snow

31 December, wed

	635 mmHg		79%
	2.2 m/s

31 December, Wednesday. day, -2°; night, -8°; snow

1 January, thu

	636 mmHg		79%
	2.2 m/s

1 January, Thursday. day, -2°; night, -9°; clear

2 January, fri

	636 mmHg		76%
	2.3 m/s

2 January, Friday. day, -2°; night, -9°; partly cloudy

3 January, sat

	635 mmHg		77%
	2.5 m/s

3 January, Saturday. day, -2°; night, -9°; partly cloudy

Average data for 10 years

Missoula December

5

sunny days

14

days with precipitation

14

cloudy days

5 sunny days; 14 days with precipitation; 14 cloudy days;

76

%

air humidity

1.6

m/s

WindS

68

mm of precipitation

(10% of annual average)

air humidity 76%; 68 millimeters of precipitation (10% of annual average); Wind southerly 1.6 Meters per second

Weather graphs for December

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

S

S

S

S

S

S

S

S

S

S

S

SE

S

S

S

S

S

S

S

S

S

S

SE

S

SE

S

S

S

S

S

S

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

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26

27

28

29

30

31

Daytime temperature

Night-time temperature

Cities near you

Moscow
West Yellowstone
Bozeman
Boise
Helena
Spokane
Idaho Falls
Big Sky
Lewiston

Cities with similar weather in December

Minsk
Vitebsk
Cholpon-Ata
Atyrau
Kyzylorda
Baikonur
Orsha
Polotsk
Gyumri

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

December in Missoula is the most freezing month of the year. In December, the weather in Missoula is typically freezing. Average daily high temperature in December is about 1 degree below zero. On average, Missoula has 10 partly cloudy, 8 snowy, 8 cloudy, and 5 sunny days in December. The snowfalls are usually moderate. December as well as January, February, March, and April is considered the most uncomfortable time to visit Missoula.

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