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August weather forecast in San Bernardino

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

	680 mmHg		46%
	3.2 m/s

27 July, Sunday. day, 33°; night, 20°; clear

28 July, mon

	680 mmHg		46%
	3.1 m/s

28 July, Monday. day, 33°; night, 19°; clear

29 July, tue

	680 mmHg		45%
	3 m/s

29 July, Tuesday. day, 33°; night, 19°; clear

30 July, wed

	680 mmHg		47%
	3.1 m/s

30 July, Wednesday. day, 32°; night, 19°; rain

31 July, thu

	680 mmHg		49%
	3.1 m/s

31 July, Thursday. day, 32°; night, 19°; rain

1 August, fri

	680 mmHg		47%
	3 m/s

1 August, Friday. day, 33°; night, 19°; partly cloudy

2 August, sat

	680 mmHg		45%
	3 m/s

2 August, Saturday. day, 33°; night, 19°; partly cloudy

3 August, sun

	680 mmHg		44%
	3.1 m/s

3 August, Sunday. day, 33°; night, 19°; clear

4 August, mon

	680 mmHg		45%
	3.1 m/s

4 August, Monday. day, 33°; night, 19°; clear

5 August, tue

	680 mmHg		44%
	3.2 m/s

5 August, Tuesday. day, 33°; night, 19°; clear

6 August, wed

	679 mmHg		44%
	3.2 m/s

6 August, Wednesday. day, 32°; night, 18°; clear

7 August, thu

	679 mmHg		45%
	3.2 m/s

7 August, Thursday. day, 32°; night, 18°; clear

8 August, fri

	679 mmHg		43%
	3.1 m/s

8 August, Friday. day, 32°; night, 18°; clear

9 August, sat

	679 mmHg		43%
	3 m/s

9 August, Saturday. day, 32°; night, 19°; clear

10 August, sun

	679 mmHg		45%
	3.1 m/s

10 August, Sunday. day, 32°; night, 19°; clear

11 August, mon

	680 mmHg		44%
	3 m/s

11 August, Monday. day, 32°; night, 19°; clear

12 August, tue

	680 mmHg		43%
	3 m/s

12 August, Tuesday. day, 33°; night, 19°; clear

13 August, wed

	680 mmHg		41%
	3 m/s

13 August, Wednesday. day, 33°; night, 19°; clear

14 August, thu

	680 mmHg		41%
	3.2 m/s

14 August, Thursday. day, 34°; night, 20°; clear

15 August, fri

	679 mmHg		43%
	3.1 m/s

15 August, Friday. day, 33°; night, 19°; clear

16 August, sat

	679 mmHg		43%
	3 m/s

16 August, Saturday. day, 33°; night, 19°; clear

17 August, sun

	680 mmHg		44%
	3.1 m/s

17 August, Sunday. day, 33°; night, 19°; clear

18 August, mon

	679 mmHg		44%
	3.2 m/s

18 August, Monday. day, 32°; night, 19°; rain

19 August, tue

	679 mmHg		45%
	3.2 m/s

19 August, Tuesday. day, 32°; night, 19°; clear

20 August, wed

	679 mmHg		47%
	3.1 m/s

20 August, Wednesday. day, 31°; night, 18°; clear

21 August, thu

	679 mmHg		47%
	3.1 m/s

21 August, Thursday. day, 32°; night, 18°; clear

22 August, fri

	679 mmHg		46%
	3.1 m/s

22 August, Friday. day, 32°; night, 19°; clear

23 August, sat

	679 mmHg		46%
	3.1 m/s

23 August, Saturday. day, 32°; night, 18°; clear

24 August, sun

	679 mmHg		44%
	3.1 m/s

24 August, Sunday. day, 32°; night, 19°; clear

25 August, mon

	679 mmHg		44%
	3.1 m/s

25 August, Monday. day, 33°; night, 19°; clear

26 August, tue

	679 mmHg		43%
	3 m/s

26 August, Tuesday. day, 33°; night, 19°; clear

27 August, wed

	679 mmHg		41%
	3 m/s

27 August, Wednesday. day, 33°; night, 19°; rain

28 August, thu

	679 mmHg		40%
	2.9 m/s

28 August, Thursday. day, 34°; night, 19°; clear

29 August, fri

	679 mmHg		40%
	2.9 m/s

29 August, Friday. day, 34°; night, 20°; clear

30 August, sat

	679 mmHg		41%
	3.1 m/s

30 August, Saturday. day, 33°; night, 20°; clear

31 August, sun

	678 mmHg		42%
	3.1 m/s

31 August, Sunday. day, 33°; night, 19°; clear

1 September, mon

	678 mmHg		42%
	3 m/s

1 September, Monday. day, 32°; night, 19°; rain

2 September, tue

	679 mmHg		44%
	3 m/s

2 September, Tuesday. day, 32°; night, 19°; clear

3 September, wed

	679 mmHg		47%
	2.9 m/s

3 September, Wednesday. day, 32°; night, 19°; rain

4 September, thu

	679 mmHg		46%
	2.9 m/s

4 September, Thursday. day, 32°; night, 19°; clear

5 September, fri

	679 mmHg		44%
	2.8 m/s

5 September, Friday. day, 32°; night, 19°; clear

6 September, sat

	679 mmHg		43%
	2.7 m/s

6 September, Saturday. day, 32°; night, 19°; clear

Average data for 10 years

San Bernardino August

27

sunny days

2

days with precipitation

2

cloudy days

27 sunny days; 2 days with precipitation; 2 cloudy days;

44

%

air humidity

1.5

m/s

WindSW

10

mm of precipitation

(3% of annual average)

air humidity 44%; 10 millimeters of precipitation (3% of annual average); Wind south-westerly 1.5 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

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

Los Angeles
Las Vegas
San Diego
Beverly Hills
Santa Monica
Yuma
Santa Barbara
Tijuana
San Clemente

Cities with similar weather in August

Goa
Palermo
Alexandria
Galle
Bari
Amman
Ischia
Honolulu
Zakynthos

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

August in San Bernardino is the sunniest and the hottest month of the year. In August, the weather in San Bernardino is typically hot. Average daily high temperature in August is about 33 degrees above zero. On average, San Bernardino has 27 sunny, 2 rainy, and 2 partly cloudy days in August. The rains are usually light.

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