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September weather forecast. Erie County: Yandex

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

	752 mmHg		73%
	5.5 m/s		+23

31 August, Sunday. day, 23°; night, 19°; clear

1 September, mon

	753 mmHg		73%
	5.2 m/s		+23

1 September, Monday. day, 23°; night, 19°; clear

2 September, tue

	752 mmHg		74%
	5.4 m/s		+23

2 September, Tuesday. day, 23°; night, 19°; clear

3 September, wed

	751 mmHg		75%
	5.4 m/s		+22

3 September, Wednesday. day, 23°; night, 19°; clear

4 September, thu

	751 mmHg		75%
	5.7 m/s		+22

4 September, Thursday. day, 23°; night, 19°; clear

5 September, fri

	753 mmHg		74%
	6 m/s		+23

5 September, Friday. day, 23°; night, 18°; clear

6 September, sat

	753 mmHg		74%
	5.4 m/s		+22

6 September, Saturday. day, 23°; night, 18°; clear

7 September, sun

	751 mmHg		76%
	6.5 m/s		+21

7 September, Sunday. day, 23°; night, 19°; rain

8 September, mon

	751 mmHg		77%
	6.8 m/s		+21

8 September, Monday. day, 22°; night, 18°; rain

9 September, tue

	752 mmHg		76%
	5.7 m/s		+21

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

10 September, wed

	753 mmHg		74%
	5.9 m/s		+21

10 September, Wednesday. day, 22°; night, 17°; partly cloudy

11 September, thu

	753 mmHg		73%
	5.8 m/s		+21

11 September, Thursday. day, 22°; night, 17°; clear

12 September, fri

	752 mmHg		77%
	6 m/s		+21

12 September, Friday. day, 22°; night, 17°; rain

13 September, sat

	751 mmHg		77%
	6 m/s		+21

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

14 September, sun

	752 mmHg		76%
	6.3 m/s		+21

14 September, Sunday. day, 21°; night, 17°; partly cloudy

15 September, mon

	753 mmHg		74%
	6.2 m/s		+20

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

16 September, tue

	754 mmHg		74%
	5.3 m/s		+20

16 September, Tuesday. day, 20°; night, 16°; partly cloudy

17 September, wed

	753 mmHg		75%
	5.5 m/s		+20

17 September, Wednesday. day, 21°; night, 16°; clear

18 September, thu

	753 mmHg		74%
	5.5 m/s		+20

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

19 September, fri

	753 mmHg		73%
	5.9 m/s		+20

19 September, Friday. day, 20°; night, 16°; clear

20 September, sat

	752 mmHg		74%
	6 m/s		+21

20 September, Saturday. day, 21°; night, 16°; clear

21 September, sun

	752 mmHg		74%
	6.1 m/s		+20

21 September, Sunday. day, 21°; night, 17°; rain

22 September, mon

	752 mmHg		75%
	6.8 m/s		+20

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

23 September, tue

	752 mmHg		74%
	6.7 m/s		+20

23 September, Tuesday. day, 19°; night, 15°; rain

24 September, wed

	753 mmHg		73%
	6.1 m/s		+20

24 September, Wednesday. day, 19°; night, 15°; partly cloudy

25 September, thu

	752 mmHg		75%
	6.5 m/s		+20

25 September, Thursday. day, 19°; night, 15°; overcast

26 September, fri

	751 mmHg		76%
	6.4 m/s		+19

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

27 September, sat

	750 mmHg		76%
	6.7 m/s		+20

27 September, Saturday. day, 19°; night, 15°; rain

28 September, sun

	750 mmHg		76%
	6.5 m/s		+19

28 September, Sunday. day, 19°; night, 15°; overcast

29 September, mon

	751 mmHg		75%
	6.7 m/s		+18

29 September, Monday. day, 18°; night, 14°; partly cloudy

30 September, tue

	752 mmHg		75%
	6.6 m/s		+17

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

1 October, wed

	752 mmHg		74%
	6.5 m/s		+18

1 October, Wednesday. day, 18°; night, 14°; partly cloudy

2 October, thu

	752 mmHg		77%
	6.8 m/s		+17

2 October, Thursday. day, 18°; night, 14°; rain

3 October, fri

	753 mmHg		75%
	6.8 m/s		+17

3 October, Friday. day, 17°; night, 13°; rain

4 October, sat

	753 mmHg		77%
	6.9 m/s		+16

4 October, Saturday. day, 17°; night, 14°; rain

Average data for 10 years

Erie County September

11

sunny days

10

days with precipitation

6

cloudy days

11 sunny days; 10 days with precipitation; 6 cloudy days;

75

%

air humidity

4.19

m/s

WindS

89

mm of precipitation

(9% of annual average)

+21

°C

Water temperature

air humidity 75%; 89 millimeters of precipitation (9% of annual average); Wind southerly 4.19 Meters per second; Water temperature +21°

Weather graphs for September

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

S

S

SW

S

S

S

S

S

S

S

S

S

SW

SW

SW

S

S

S

S

S

S

SW

SW

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

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

In September, the weather in Erie County is typically warm. Average daily high temperature in September is about 21 degrees above zero. On average, Erie County has 11 sunny, 10 rainy, 5 partly cloudy, and 4 cloudy days in September. The rains are usually heavy.

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