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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

	746 mmHg		58%
	3.5 m/s		+26

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

1 September, mon

	746 mmHg		57%
	3.5 m/s		+26

1 September, Monday. day, 31°; night, 19°; clear

2 September, tue

	747 mmHg		58%
	3.5 m/s		+26

2 September, Tuesday. day, 31°; night, 19°; clear

3 September, wed

	747 mmHg		58%
	3.7 m/s		+26

3 September, Wednesday. day, 31°; night, 19°; clear

4 September, thu

	747 mmHg		58%
	3.6 m/s		+25

4 September, Thursday. day, 31°; night, 19°; clear

5 September, fri

	747 mmHg		57%
	3.4 m/s		+26

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

6 September, sat

	747 mmHg		56%
	3.5 m/s		+26

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

7 September, sun

	747 mmHg		57%
	3.5 m/s		+25

7 September, Sunday. day, 31°; night, 19°; clear

8 September, mon

	747 mmHg		58%
	3.5 m/s		+25

8 September, Monday. day, 30°; night, 18°; clear

9 September, tue

	746 mmHg		58%
	3.6 m/s		+25

9 September, Tuesday. day, 30°; night, 18°; clear

10 September, wed

	747 mmHg		60%
	3.5 m/s		+25

10 September, Wednesday. day, 29°; night, 18°; clear

11 September, thu

	748 mmHg		58%
	3.5 m/s		+25

11 September, Thursday. day, 29°; night, 18°; clear

12 September, fri

	747 mmHg		58%
	3.5 m/s		+25

12 September, Friday. day, 29°; night, 17°; clear

13 September, sat

	747 mmHg		58%
	3.4 m/s		+24

13 September, Saturday. day, 29°; night, 17°; clear

14 September, sun

	747 mmHg		60%
	3.4 m/s		+25

14 September, Sunday. day, 29°; night, 17°; clear

15 September, mon

	747 mmHg		61%
	3.4 m/s		+25

15 September, Monday. day, 29°; night, 17°; clear

16 September, tue

	747 mmHg		61%
	3.3 m/s		+25

16 September, Tuesday. day, 28°; night, 17°; clear

17 September, wed

	747 mmHg		61%
	3.3 m/s		+24

17 September, Wednesday. day, 28°; night, 17°; clear

18 September, thu

	747 mmHg		62%
	3.4 m/s		+24

18 September, Thursday. day, 28°; night, 16°; clear

19 September, fri

	747 mmHg		62%
	3.4 m/s		+24

19 September, Friday. day, 28°; night, 16°; clear

20 September, sat

	747 mmHg		64%
	3.4 m/s		+24

20 September, Saturday. day, 27°; night, 16°; rain

21 September, sun

	747 mmHg		63%
	3.5 m/s		+24

21 September, Sunday. day, 28°; night, 16°; clear

22 September, mon

	747 mmHg		62%
	3.5 m/s		+25

22 September, Monday. day, 28°; night, 16°; partly cloudy

23 September, tue

	747 mmHg		58%
	3.4 m/s		+26

23 September, Tuesday. day, 29°; night, 16°; clear

24 September, wed

	748 mmHg		57%
	3.3 m/s		+26

24 September, Wednesday. day, 29°; night, 16°; clear

25 September, thu

	747 mmHg		57%
	3.4 m/s		+26

25 September, Thursday. day, 29°; night, 17°; clear

26 September, fri

	747 mmHg		60%
	3.3 m/s		+27

26 September, Friday. day, 28°; night, 17°; partly cloudy

27 September, sat

	747 mmHg		60%
	3.3 m/s		+26

27 September, Saturday. day, 28°; night, 16°; clear

28 September, sun

	747 mmHg		60%
	3.3 m/s		+25

28 September, Sunday. day, 28°; night, 17°; partly cloudy

29 September, mon

	747 mmHg		58%
	3.3 m/s		+25

29 September, Monday. day, 28°; night, 16°; partly cloudy

30 September, tue

	747 mmHg		57%
	3.4 m/s		+26

30 September, Tuesday. day, 29°; night, 16°; clear

1 October, wed

	747 mmHg		57%
	3.4 m/s		+26

1 October, Wednesday. day, 28°; night, 16°; clear

2 October, thu

	747 mmHg		58%
	3.4 m/s		+24

2 October, Thursday. day, 28°; night, 16°; clear

3 October, fri

	747 mmHg		60%
	3.4 m/s		+23

3 October, Friday. day, 27°; night, 16°; clear

4 October, sat

	747 mmHg		62%
	3.4 m/s		+22

4 October, Saturday. day, 26°; night, 15°; partly cloudy

Average data for 10 years

Rowland Heights September

25

sunny days

1

day with precipitation

4

cloudy days

25 sunny days; 1 day with precipitation; 4 cloudy days;

58

%

air humidity

1.5

m/s

WindS

6

mm of precipitation

(2% of annual average)

+25

°C

Water temperature

air humidity 58%; 6 millimeters of precipitation (2% of annual average); Wind southerly 1.5 Meters per second; Water temperature +25°

Weather graphs for September

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

S

S

SW

S

S

S

S

S

S

S

SW

S

S

S

S

S

S

S

S

S

S

S

S

S

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

25

26

27

28

29

30

Daytime temperature

Night-time temperature

Cities near you

Los Angeles
Las Vegas
San Diego
Yuma
Santa Monica
Beverly Hills
Mexicali
Santa Barbara
Glendale

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 hot. Average daily high temperature in September is about 29 degrees above zero. On average, Rowland Heights has 25 sunny, 4 partly cloudy, and 1 rainy day in September. The rains are usually light.

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