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September weather forecast in South Dayton

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

	742 mmHg		75%
	5.9 m/s		+23

31 August, Sunday. day, 23°; night, 18°; clear

1 September, mon

	743 mmHg		74%
	5.5 m/s		+23

1 September, Monday. day, 22°; night, 18°; clear

2 September, tue

	743 mmHg		75%
	5.9 m/s		+23

2 September, Tuesday. day, 22°; night, 18°; clear

3 September, wed

	742 mmHg		77%
	5.7 m/s		+22

3 September, Wednesday. day, 23°; night, 18°; clear

4 September, thu

	742 mmHg		77%
	5.9 m/s		+22

4 September, Thursday. day, 23°; night, 18°; clear

5 September, fri

	743 mmHg		75%
	5.9 m/s		+23

5 September, Friday. day, 22°; night, 18°; clear

6 September, sat

	743 mmHg		76%
	5.6 m/s		+22

6 September, Saturday. day, 22°; night, 18°; rain

7 September, sun

	741 mmHg		77%
	6.8 m/s		+21

7 September, Sunday. day, 22°; night, 18°; rain

8 September, mon

	741 mmHg		80%
	6.9 m/s		+21

8 September, Monday. day, 21°; night, 18°; rain

9 September, tue

	742 mmHg		79%
	6 m/s		+21

9 September, Tuesday. day, 21°; night, 17°; rain

10 September, wed

	743 mmHg		77%
	6.1 m/s		+21

10 September, Wednesday. day, 21°; night, 17°; partly cloudy

11 September, thu

	743 mmHg		74%
	6.1 m/s		+21

11 September, Thursday. day, 21°; night, 16°; clear

12 September, fri

	742 mmHg		78%
	6.5 m/s		+21

12 September, Friday. day, 21°; night, 17°; rain

13 September, sat

	742 mmHg		79%
	6.4 m/s		+21

13 September, Saturday. day, 21°; night, 17°; rain

14 September, sun

	742 mmHg		78%
	6.7 m/s		+21

14 September, Sunday. day, 20°; night, 17°; rain

15 September, mon

	743 mmHg		76%
	6.3 m/s		+20

15 September, Monday. day, 20°; night, 16°; partly cloudy

16 September, tue

	744 mmHg		76%
	5.5 m/s		+20

16 September, Tuesday. day, 19°; night, 15°; partly cloudy

17 September, wed

	743 mmHg		76%
	5.6 m/s		+20

17 September, Wednesday. day, 20°; night, 15°; clear

18 September, thu

	743 mmHg		76%
	5.9 m/s		+20

18 September, Thursday. day, 20°; night, 16°; clear

19 September, fri

	743 mmHg		74%
	6.2 m/s		+20

19 September, Friday. day, 20°; night, 15°; clear

20 September, sat

	742 mmHg		76%
	6.4 m/s		+20

20 September, Saturday. day, 20°; night, 16°; clear

21 September, sun

	742 mmHg		76%
	6.4 m/s		+20

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

22 September, mon

	742 mmHg		77%
	7.2 m/s		+20

22 September, Monday. day, 20°; night, 16°; rain

23 September, tue

	743 mmHg		76%
	6.8 m/s		+20

23 September, Tuesday. day, 18°; night, 15°; rain

24 September, wed

	743 mmHg		74%
	6.5 m/s		+19

24 September, Wednesday. day, 19°; night, 14°; partly cloudy

25 September, thu

	742 mmHg		76%
	6.8 m/s		+20

25 September, Thursday. day, 19°; night, 14°; overcast

26 September, fri

	741 mmHg		78%
	6.8 m/s		+19

26 September, Friday. day, 19°; night, 15°; overcast

27 September, sat

	741 mmHg		77%
	6.8 m/s		+19

27 September, Saturday. day, 19°; night, 15°; partly cloudy

28 September, sun

	740 mmHg		79%
	7.1 m/s		+18

28 September, Sunday. day, 18°; night, 15°; rain

29 September, mon

	741 mmHg		77%
	7 m/s		+18

29 September, Monday. day, 17°; night, 13°; rain

30 September, tue

	742 mmHg		76%
	6.9 m/s		+17

30 September, Tuesday. day, 17°; night, 13°; rain

1 October, wed

	742 mmHg		76%
	6.8 m/s		+17

1 October, Wednesday. day, 17°; night, 13°; clear

2 October, thu

	742 mmHg		78%
	7.1 m/s		+17

2 October, Thursday. day, 17°; night, 13°; partly cloudy

3 October, fri

	743 mmHg		78%
	6.9 m/s		+16

3 October, Friday. day, 17°; night, 12°; rain

4 October, sat

	743 mmHg		79%
	6.8 m/s		+16

4 October, Saturday. day, 17°; night, 13°; rain

Average data for 10 years

South Dayton September

11

sunny days

12

days with precipitation

7

cloudy days

11 sunny days; 12 days with precipitation; 7 cloudy days;

77

%

air humidity

4.5

m/s

WindS

109

mm of precipitation

(8% of annual average)

+20

°C

Water temperature

air humidity 77%; 109 millimeters of precipitation (8% of annual average); Wind southerly 4.5 Meters per second; Water temperature +20°

Weather graphs for September

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

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S

S

S

S

S

S

S

S

S

S

S

SW

SW

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

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9

10

11

12

13

14

15

16

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18

19

20

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23

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29

30

Daytime temperature

Night-time temperature

Cities near you

Toronto
Detroit
Pittsburgh
Cleveland
Brooklyn
Macedonia
Burlington
Buffalo
Milan

Cities with similar weather in September

San Francisco
Podgorica
Vancouver
Genoa
Boston
Seattle
Balkhash
Montreal
Albena

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

September in South Dayton is the sunniest month of the year. In September, the weather in South Dayton is typically warm. Average daily high temperature in September is about 20 degrees above zero. On average, South Dayton has 12 rainy, 11 sunny, 5 partly cloudy, and 2 cloudy days in September. The rains are usually heavy.

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