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August 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

27 July, sun

	641 mmHg		43%
	3.3 m/s

27 July, Sunday. day, 29°; night, 12°; rain

28 July, mon

	641 mmHg		43%
	3.4 m/s

28 July, Monday. day, 29°; night, 13°; clear

29 July, tue

	641 mmHg		41%
	3.5 m/s

29 July, Tuesday. day, 29°; night, 13°; clear

30 July, wed

	641 mmHg		42%
	3.5 m/s

30 July, Wednesday. day, 29°; night, 12°; clear

31 July, thu

	641 mmHg		40%
	3.3 m/s

31 July, Thursday. day, 29°; night, 13°; clear

1 August, fri

	641 mmHg		40%
	3.5 m/s

1 August, Friday. day, 29°; night, 13°; clear

2 August, sat

	641 mmHg		43%
	3.4 m/s

2 August, Saturday. day, 29°; night, 13°; clear

3 August, sun

	641 mmHg		44%
	3.3 m/s

3 August, Sunday. day, 28°; night, 12°; partly cloudy

4 August, mon

	641 mmHg		43%
	3.4 m/s

4 August, Monday. day, 28°; night, 12°; clear

5 August, tue

	641 mmHg		46%
	3 m/s

5 August, Tuesday. day, 28°; night, 11°; clear

6 August, wed

	640 mmHg		46%
	3.2 m/s

6 August, Wednesday. day, 28°; night, 12°; rain

7 August, thu

	640 mmHg		46%
	3.1 m/s

7 August, Thursday. day, 27°; night, 12°; rain

8 August, fri

	640 mmHg		47%
	3.2 m/s

8 August, Friday. day, 27°; night, 11°; clear

9 August, sat

	641 mmHg		47%
	3.1 m/s

9 August, Saturday. day, 27°; night, 11°; clear

10 August, sun

	641 mmHg		46%
	3.1 m/s

10 August, Sunday. day, 28°; night, 11°; clear

11 August, mon

	641 mmHg		46%
	3.3 m/s

11 August, Monday. day, 28°; night, 12°; clear

12 August, tue

	641 mmHg		44%
	3.2 m/s

12 August, Tuesday. day, 28°; night, 11°; clear

13 August, wed

	641 mmHg		46%
	3.2 m/s

13 August, Wednesday. day, 27°; night, 11°; partly cloudy

14 August, thu

	641 mmHg		45%
	3.1 m/s

14 August, Thursday. day, 27°; night, 11°; clear

15 August, fri

	641 mmHg		43%
	3.5 m/s

15 August, Friday. day, 28°; night, 11°; clear

16 August, sat

	641 mmHg		45%
	3.3 m/s

16 August, Saturday. day, 27°; night, 11°; clear

17 August, sun

	641 mmHg		45%
	3 m/s

17 August, Sunday. day, 27°; night, 11°; partly cloudy

18 August, mon

	640 mmHg		46%
	3.1 m/s

18 August, Monday. day, 27°; night, 11°; clear

19 August, tue

	640 mmHg		44%
	3.4 m/s

19 August, Tuesday. day, 27°; night, 11°; clear

20 August, wed

	640 mmHg		45%
	3.1 m/s

20 August, Wednesday. day, 26°; night, 11°; partly cloudy

21 August, thu

	640 mmHg		49%
	3.2 m/s

21 August, Thursday. day, 26°; night, 10°; rain

22 August, fri

	640 mmHg		47%
	3.2 m/s

22 August, Friday. day, 27°; night, 11°; partly cloudy

23 August, sat

	639 mmHg		48%
	3.2 m/s

23 August, Saturday. day, 25°; night, 10°; rain

24 August, sun

	640 mmHg		48%
	3.5 m/s

24 August, Sunday. day, 25°; night, 10°; overcast

25 August, mon

	640 mmHg		49%
	3.3 m/s

25 August, Monday. day, 25°; night, 9°; clear

26 August, tue

	640 mmHg		47%
	3.3 m/s

26 August, Tuesday. day, 26°; night, 10°; clear

27 August, wed

	640 mmHg		44%
	3.4 m/s

27 August, Wednesday. day, 26°; night, 10°; rain

28 August, thu

	641 mmHg		46%
	3.3 m/s

28 August, Thursday. day, 26°; night, 10°; clear

29 August, fri

	640 mmHg		45%
	3.3 m/s

29 August, Friday. day, 27°; night, 10°; clear

30 August, sat

	639 mmHg		47%
	3.5 m/s

30 August, Saturday. day, 26°; night, 10°; clear

31 August, sun

	639 mmHg		47%
	3.5 m/s

31 August, Sunday. day, 25°; night, 9°; rain

1 September, mon

	639 mmHg		50%
	3.4 m/s

1 September, Monday. day, 24°; night, 8°; clear

2 September, tue

	640 mmHg		47%
	3.4 m/s

2 September, Tuesday. day, 25°; night, 9°; clear

3 September, wed

	640 mmHg		46%
	3.2 m/s

3 September, Wednesday. day, 25°; night, 9°; clear

4 September, thu

	640 mmHg		50%
	3 m/s

4 September, Thursday. day, 24°; night, 9°; clear

5 September, fri

	640 mmHg		50%
	3.1 m/s

5 September, Friday. day, 24°; night, 9°; clear

6 September, sat

	640 mmHg		52%
	3.2 m/s

6 September, Saturday. day, 23°; night, 8°; rain

Average data for 10 years

Missoula August

19

sunny days

6

days with precipitation

1

cloudy day

19 sunny days; 6 days with precipitation; 1 cloudy day;

46

%

air humidity

1.7

m/s

WindS

28

mm of precipitation

(4% of annual average)

air humidity 46%; 28 millimeters of precipitation (4% of annual average); Wind southerly 1.7 Meters per second

Weather graphs for August

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

S

SW

SW

S

S

S

SW

SW

S

S

S

S

S

S

S

S

SW

SW

SW

S

S

SW

S

SW

S

SW

SW

SW

S

S

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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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 August

Prague
Astana
Berlin
Karaganda
Pavlodar
Frankfurt am Main
Zurich
Krakow
Stuttgart

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

In August, the weather in Missoula is typically warm. Average daily high temperature in August is about 27 degrees above zero. On average, Missoula has 19 sunny, 6 rainy, 5 partly cloudy, and 1 cloudy day in August. The rains are usually light. August as well as July and September is considered the most comfortable time to visit Missoula.

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