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September weather forecast in Rowland Heights

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

31 August, sun

	723 mmHg		46%
	3.7 m/s		+26

31 August, Sunday. day, 27°; night, 23°; clear

1 September, mon

	723 mmHg		44%
	3.7 m/s		+26

1 September, Monday. day, 26°; night, 22°; clear

2 September, tue

	724 mmHg		43%
	4 m/s		+26

2 September, Tuesday. day, 26°; night, 22°; clear

3 September, wed

	723 mmHg		46%
	4 m/s		+26

3 September, Wednesday. day, 26°; night, 22°; clear

4 September, thu

	723 mmHg		47%
	3.9 m/s		+25

4 September, Thursday. day, 25°; night, 21°; clear

5 September, fri

	723 mmHg		41%
	3.5 m/s		+26

5 September, Friday. day, 26°; night, 22°; clear

6 September, sat

	723 mmHg		43%
	4 m/s		+26

6 September, Saturday. day, 27°; night, 22°; clear

7 September, sun

	723 mmHg		50%
	3.5 m/s		+25

7 September, Sunday. day, 25°; night, 21°; clear

8 September, mon

	724 mmHg		46%
	3.5 m/s		+25

8 September, Monday. day, 25°; night, 21°; clear

9 September, tue

	724 mmHg		46%
	4.4 m/s		+25

9 September, Tuesday. day, 25°; night, 21°; clear

10 September, wed

	724 mmHg		50%
	4 m/s		+25

10 September, Wednesday. day, 25°; night, 21°; clear

11 September, thu

	724 mmHg		50%
	3.5 m/s		+25

11 September, Thursday. day, 24°; night, 21°; clear

12 September, fri

	724 mmHg		52%
	4 m/s		+25

12 September, Friday. day, 24°; night, 20°; clear

13 September, sat

	724 mmHg		56%
	4.1 m/s		+24

13 September, Saturday. day, 23°; night, 21°; clear

14 September, sun

	724 mmHg		54%
	4.5 m/s		+25

14 September, Sunday. day, 25°; night, 22°; clear

15 September, mon

	724 mmHg		44%
	4 m/s		+25

15 September, Monday. day, 25°; night, 22°; clear

16 September, tue

	724 mmHg		50%
	3.7 m/s		+25

16 September, Tuesday. day, 24°; night, 20°; clear

17 September, wed

	724 mmHg		50%
	3.7 m/s		+24

17 September, Wednesday. day, 24°; night, 20°; clear

18 September, thu

	724 mmHg		49%
	3.7 m/s		+24

18 September, Thursday. day, 24°; night, 20°; clear

19 September, fri

	724 mmHg		50%
	3.7 m/s		+24

19 September, Friday. day, 24°; night, 20°; clear

20 September, sat

	724 mmHg		56%
	3.9 m/s		+24

20 September, Saturday. day, 23°; night, 19°; clear

21 September, sun

	723 mmHg		56%
	3.5 m/s		+24

21 September, Sunday. day, 24°; night, 20°; clear

22 September, mon

	724 mmHg		46%
	4 m/s		+25

22 September, Monday. day, 25°; night, 22°; clear

23 September, tue

	724 mmHg		34%
	4.3 m/s		+26

23 September, Tuesday. day, 27°; night, 23°; clear

24 September, wed

	724 mmHg		40%
	4.4 m/s		+26

24 September, Wednesday. day, 27°; night, 23°; clear

25 September, thu

	723 mmHg		37%
	5 m/s		+26

25 September, Thursday. day, 27°; night, 23°; clear

26 September, fri

	723 mmHg		36%
	4.5 m/s		+27

26 September, Friday. day, 26°; night, 22°; clear

27 September, sat

	724 mmHg		40%
	4.4 m/s		+26

27 September, Saturday. day, 26°; night, 22°; clear

28 September, sun

	724 mmHg		44%
	4 m/s		+25

28 September, Sunday. day, 25°; night, 21°; clear

29 September, mon

	724 mmHg		40%
	4 m/s		+25

29 September, Monday. day, 25°; night, 22°; clear

30 September, tue

	724 mmHg		40%
	4.6 m/s		+26

30 September, Tuesday. day, 26°; night, 22°; clear

1 October, wed

	724 mmHg		41%
	4.4 m/s		+26

1 October, Wednesday. day, 26°; night, 21°; clear

2 October, thu

	723 mmHg		51%
	4.1 m/s		+24

2 October, Thursday. day, 23°; night, 19°; clear

3 October, fri

	723 mmHg		50%
	5 m/s		+23

3 October, Friday. day, 21°; night, 17°; clear

4 October, sat

	725 mmHg		56%
	4.5 m/s		+22

4 October, Saturday. day, 20°; night, 17°; clear

Average data for 10 years

Rowland Heights September

30

sunny days

0

days with precipitation

0

cloudy days

30 sunny days; 0 days with precipitation; 0 cloudy days;

46

%

air humidity

2.2

m/s

WindSW

4

mm of precipitation

(2% of annual average)

+25

°C

Water temperature

air humidity 46%; 4 millimeters of precipitation (2% of annual average); Wind south-westerly 2.2 Meters per second; Water temperature +25°

Weather graphs for September

TemperatureWater temperaturePrecipitation chance, %Humidity, %Wind, m/sPressure, mmHg

SW

SW

S

S

SE

S

SW

SW

SW

SW

SW

SW

SW

SW

S

SW

SW

SW

W

SE

SW

E

N

E

NE

SE

S

SW

E

E

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

Daytime temperature

Night-time temperature

Cities near you

Los Angeles
San Diego
Las Vegas
Yuma
Mexicali
Irvine
Santa Barbara
Long Beach
Beverly Hills

Cities with similar weather in September

Bodrum
Malaga
Alicante
Majorca
Palermo
Rio de Janeiro
Kerkyra
Retimno
Torrevieja

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

In September, the weather in Rowland Heights is typically warm. Average daily high temperature in September is about 25 degrees above zero. On average, Rowland Heights has 30 sunny days in September. September as well as June, July, August, and October is considered the most comfortable time to visit Rowland Heights.

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