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August weather forecast in Flagstaff

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

	593 mmHg		58%
	3.3 m/s

27 July, Sunday. day, 26°; night, 14°; rain

28 July, mon

	593 mmHg		57%
	3.3 m/s

28 July, Monday. day, 26°; night, 14°; rain

29 July, tue

	593 mmHg		55%
	3.1 m/s

29 July, Tuesday. day, 26°; night, 14°; partly cloudy

30 July, wed

	593 mmHg		57%
	3.3 m/s

30 July, Wednesday. day, 26°; night, 14°; rain

31 July, thu

	593 mmHg		60%
	3.3 m/s

31 July, Thursday. day, 25°; night, 13°; rain

1 August, fri

	593 mmHg		61%
	3.2 m/s

1 August, Friday. day, 25°; night, 14°; rain

2 August, sat

	593 mmHg		58%
	3.1 m/s

2 August, Saturday. day, 26°; night, 14°; rain

3 August, sun

	593 mmHg		58%
	3.1 m/s

3 August, Sunday. day, 25°; night, 14°; rain

4 August, mon

	593 mmHg		57%
	3.3 m/s

4 August, Monday. day, 25°; night, 14°; partly cloudy

5 August, tue

	593 mmHg		54%
	3.5 m/s

5 August, Tuesday. day, 26°; night, 14°; partly cloudy

6 August, wed

	593 mmHg		54%
	3.8 m/s

6 August, Wednesday. day, 25°; night, 13°; clear

7 August, thu

	593 mmHg		54%
	3.8 m/s

7 August, Thursday. day, 25°; night, 13°; clear

8 August, fri

	593 mmHg		55%
	3.5 m/s

8 August, Friday. day, 25°; night, 13°; clear

9 August, sat

	593 mmHg		55%
	3.4 m/s

9 August, Saturday. day, 25°; night, 13°; rain

10 August, sun

	593 mmHg		57%
	3.3 m/s

10 August, Sunday. day, 25°; night, 13°; partly cloudy

11 August, mon

	593 mmHg		57%
	3.2 m/s

11 August, Monday. day, 25°; night, 13°; partly cloudy

12 August, tue

	593 mmHg		57%
	3.3 m/s

12 August, Tuesday. day, 25°; night, 13°; rain

13 August, wed

	593 mmHg		58%
	3.1 m/s

13 August, Wednesday. day, 25°; night, 13°; rain

14 August, thu

	593 mmHg		56%
	3.2 m/s

14 August, Thursday. day, 25°; night, 13°; clear

15 August, fri

	593 mmHg		56%
	3.1 m/s

15 August, Friday. day, 25°; night, 13°; rain

16 August, sat

	593 mmHg		56%
	3.2 m/s

16 August, Saturday. day, 25°; night, 13°; rain

17 August, sun

	593 mmHg		58%
	3.3 m/s

17 August, Sunday. day, 25°; night, 13°; rain

18 August, mon

	593 mmHg		57%
	3.6 m/s

18 August, Monday. day, 25°; night, 13°; clear

19 August, tue

	592 mmHg		58%
	3.6 m/s

19 August, Tuesday. day, 25°; night, 13°; rain

20 August, wed

	592 mmHg		58%
	3.5 m/s

20 August, Wednesday. day, 25°; night, 13°; rain

21 August, thu

	592 mmHg		57%
	3.3 m/s

21 August, Thursday. day, 25°; night, 13°; rain

22 August, fri

	592 mmHg		58%
	3.5 m/s

22 August, Friday. day, 25°; night, 12°; rain

23 August, sat

	592 mmHg		60%
	3.5 m/s

23 August, Saturday. day, 24°; night, 12°; rain

24 August, sun

	592 mmHg		60%
	3.3 m/s

24 August, Sunday. day, 24°; night, 12°; rain

25 August, mon

	592 mmHg		60%
	3.1 m/s

25 August, Monday. day, 24°; night, 12°; rain

26 August, tue

	592 mmHg		61%
	3.1 m/s

26 August, Tuesday. day, 24°; night, 12°; rain

27 August, wed

	592 mmHg		57%
	3.1 m/s

27 August, Wednesday. day, 25°; night, 13°; clear

28 August, thu

	592 mmHg		54%
	3.2 m/s

28 August, Thursday. day, 25°; night, 13°; clear

29 August, fri

	592 mmHg		52%
	3.3 m/s

29 August, Friday. day, 25°; night, 13°; clear

30 August, sat

	592 mmHg		52%
	3.5 m/s

30 August, Saturday. day, 25°; night, 13°; clear

31 August, sun

	592 mmHg		54%
	3.7 m/s

31 August, Sunday. day, 24°; night, 13°; clear

1 September, mon

	592 mmHg		57%
	3.6 m/s

1 September, Monday. day, 24°; night, 12°; rain

2 September, tue

	592 mmHg		56%
	3.6 m/s

2 September, Tuesday. day, 24°; night, 12°; rain

3 September, wed

	592 mmHg		52%
	3.6 m/s

3 September, Wednesday. day, 24°; night, 12°; rain

4 September, thu

	592 mmHg		52%
	3.6 m/s

4 September, Thursday. day, 24°; night, 12°; rain

5 September, fri

	592 mmHg		51%
	3.6 m/s

5 September, Friday. day, 24°; night, 12°; clear

6 September, sat

	592 mmHg		52%
	3.5 m/s

6 September, Saturday. day, 24°; night, 12°; rain

Average data for 10 years

Flagstaff August

10

sunny days

17

days with precipitation

3

cloudy days

10 sunny days; 17 days with precipitation; 3 cloudy days;

57

%

air humidity

1.8

m/s

WindSW

128

mm of precipitation

(20% of annual average)

air humidity 57%; 128 millimeters of precipitation (20% of annual average); Wind south-westerly 1.8 Meters per second

Weather graphs for August

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

S

SW

S

SW

S

SW

S

S

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

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Tucson
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Hurricane
Sedona
Page

Cities with similar weather in August

Lisbon
Porto
Santa Cruz de Tenerife
Seattle
Playa de las Americas
Lyon
Montreal
Bordeaux
Port Louis

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

August in Flagstaff is the rainiest and the cloudiest month of the year. In August, the weather in Flagstaff is typically warm. Average daily high temperature in August is about 25 degrees above zero. On average, Flagstaff has 17 rainy, 10 sunny, and 4 partly cloudy days in August. The rains are usually heavy. August as well as January, February, March, and July is considered the most uncomfortable time to visit Flagstaff.

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