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September weather forecast in Port Graham

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

	747 mmHg		84%
	6.4 m/s		+13

31 August, Sunday. day, 12°; night, 9°; rain

1 September, mon

	747 mmHg		85%
	6.3 m/s		+13

1 September, Monday. day, 12°; night, 9°; rain

2 September, tue

	748 mmHg		84%
	6.5 m/s		+13

2 September, Tuesday. day, 12°; night, 9°; clear

3 September, wed

	748 mmHg		84%
	6.1 m/s		+11

3 September, Wednesday. day, 12°; night, 9°; rain

4 September, thu

	749 mmHg		85%
	5.3 m/s		+11

4 September, Thursday. day, 12°; night, 9°; rain

5 September, fri

	749 mmHg		86%
	5.5 m/s		+12

5 September, Friday. day, 12°; night, 9°; overcast

6 September, sat

	749 mmHg		85%
	6.4 m/s		+12

6 September, Saturday. day, 12°; night, 9°; overcast

7 September, sun

	748 mmHg		84%
	6.1 m/s		+12

7 September, Sunday. day, 12°; night, 9°; rain

8 September, mon

	749 mmHg		84%
	5.7 m/s		+11

8 September, Monday. day, 12°; night, 9°; rain

9 September, tue

	748 mmHg		84%
	5.9 m/s		+13

9 September, Tuesday. day, 12°; night, 9°; rain

10 September, wed

	747 mmHg		84%
	5.7 m/s		+13

10 September, Wednesday. day, 12°; night, 9°; rain

11 September, thu

	749 mmHg		84%
	5.6 m/s		+11

11 September, Thursday. day, 12°; night, 8°; clear

12 September, fri

	749 mmHg		84%
	6.8 m/s		+11

12 September, Friday. day, 12°; night, 9°; rain

13 September, sat

	748 mmHg		84%
	6.7 m/s		+12

13 September, Saturday. day, 12°; night, 9°; clear

14 September, sun

	749 mmHg		83%
	6.2 m/s		+11

14 September, Sunday. day, 11°; night, 8°; rain

15 September, mon

	748 mmHg		84%
	6.5 m/s		+11

15 September, Monday. day, 11°; night, 8°; rain

16 September, tue

	746 mmHg		84%
	6.5 m/s		+11

16 September, Tuesday. day, 11°; night, 8°; rain

17 September, wed

	744 mmHg		82%
	7 m/s		+11

17 September, Wednesday. day, 11°; night, 8°; rain

18 September, thu

	744 mmHg		81%
	7 m/s		+11

18 September, Thursday. day, 11°; night, 7°; rain

19 September, fri

	746 mmHg		82%
	6.7 m/s		+11

19 September, Friday. day, 10°; night, 7°; clear

20 September, sat

	746 mmHg		81%
	7 m/s		+10

20 September, Saturday. day, 10°; night, 7°; overcast

21 September, sun

	745 mmHg		80%
	7.2 m/s		+10

21 September, Sunday. day, 10°; night, 7°; rain

22 September, mon

	743 mmHg		78%
	7.7 m/s		+10

22 September, Monday. day, 10°; night, 7°; rain

23 September, tue

	742 mmHg		80%
	7.1 m/s		+10

23 September, Tuesday. day, 10°; night, 7°; rain

24 September, wed

	743 mmHg		79%
	7.2 m/s		+10

24 September, Wednesday. day, 10°; night, 7°; rain

25 September, thu

	744 mmHg		80%
	6.9 m/s		+10

25 September, Thursday. day, 9°; night, 6°; rain

26 September, fri

	746 mmHg		80%
	6.4 m/s		+10

26 September, Friday. day, 9°; night, 6°; clear

27 September, sat

	746 mmHg		78%
	7 m/s		+10

27 September, Saturday. day, 9°; night, 6°; clear

28 September, sun

	746 mmHg		78%
	6.7 m/s		+10

28 September, Sunday. day, 9°; night, 6°; rain

29 September, mon

	747 mmHg		79%
	6.3 m/s		+10

29 September, Monday. day, 9°; night, 6°; overcast

30 September, tue

	747 mmHg		78%
	6.9 m/s		+10

30 September, Tuesday. day, 9°; night, 6°; clear

1 October, wed

	747 mmHg		78%
	7.1 m/s		+10

1 October, Wednesday. day, 9°; night, 6°; clear

2 October, thu

	747 mmHg		78%
	7.2 m/s		+9

2 October, Thursday. day, 9°; night, 6°; rain

3 October, fri

	748 mmHg		79%
	6.9 m/s		+9

3 October, Friday. day, 9°; night, 6°; rain

4 October, sat

	747 mmHg		80%
	7.1 m/s		+9

4 October, Saturday. day, 8°; night, 6°; rain

Average data for 10 years

Port Graham September

7

sunny days

19

days with precipitation

13

cloudy days

7 sunny days; 19 days with precipitation; 13 cloudy days;

82

%

air humidity

4.4

m/s

WindS

178

mm of precipitation

(12% of annual average)

+11

°C

Water temperature

air humidity 82%; 178 millimeters of precipitation (12% of annual average); Wind southerly 4.4 Meters per second; Water temperature +11°

Weather graphs for September

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

SW

S

S

S

S

S

S

S

S

S

S

S

S

S

S

SE

S

S

S

S

S

S

SE

S

SE

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

Anchorage
Fairbanks
Kodiak
Tanana
Kenai
McGrath
Soldotna
Wasilla
Kudjak Island

Cities with similar weather in September

Helsinki
Riga
Tallinn
Stockholm
Cholpon-Ata
Oslo
Yurmala
Palanga
Dublin

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

September in Port Graham is the rainiest month of the year. In September, the weather in Port Graham is typically warm. Average daily high temperature in September is about 11 degrees above zero. On average, Port Graham has 19 rainy, 7 sunny, and 4 cloudy days in September. The rains are usually heavy. September as well as April, May, June, and July is considered the most uncomfortable time to visit Port Graham.

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