10 day forecast Monthly forecast Weather map

City or area

Go to comparison

September weather forecast in Barnstable

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

	761 mmHg		79%
	6.2 m/s		+21

31 August, Sunday. day, 23°; night, 19°; partly cloudy

1 September, mon

	761 mmHg		76%
	5.9 m/s		+21

1 September, Monday. day, 22°; night, 19°; partly cloudy

2 September, tue

	761 mmHg		79%
	6.3 m/s		+21

2 September, Tuesday. day, 21°; night, 18°; rain

3 September, wed

	760 mmHg		80%
	6.1 m/s		+21

3 September, Wednesday. day, 22°; night, 18°; partly cloudy

4 September, thu

	760 mmHg		81%
	5.7 m/s		+20

4 September, Thursday. day, 22°; night, 18°; clear

5 September, fri

	762 mmHg		78%
	6.2 m/s		+20

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

6 September, sat

	762 mmHg		79%
	6.3 m/s		+20

6 September, Saturday. day, 21°; night, 18°; rain

7 September, sun

	761 mmHg		81%
	6.3 m/s		+20

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

8 September, mon

	760 mmHg		82%
	6.1 m/s		+20

8 September, Monday. day, 22°; night, 18°; partly cloudy

9 September, tue

	761 mmHg		82%
	6.2 m/s		+20

9 September, Tuesday. day, 22°; night, 18°; overcast

10 September, wed

	761 mmHg		81%
	6 m/s		+20

10 September, Wednesday. day, 21°; night, 18°; partly cloudy

11 September, thu

	762 mmHg		78%
	6.6 m/s		+20

11 September, Thursday. day, 21°; night, 17°; partly cloudy

12 September, fri

	762 mmHg		77%
	6.3 m/s		+20

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

13 September, sat

	761 mmHg		81%
	5.6 m/s		+20

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

14 September, sun

	761 mmHg		81%
	5.8 m/s		+20

14 September, Sunday. day, 21°; night, 18°; clear

15 September, mon

	762 mmHg		79%
	6.2 m/s		+20

15 September, Monday. day, 21°; night, 17°; partly cloudy

16 September, tue

	762 mmHg		78%
	6 m/s		+19

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

17 September, wed

	762 mmHg		79%
	6.3 m/s		+19

17 September, Wednesday. day, 20°; night, 16°; partly cloudy

18 September, thu

	761 mmHg		81%
	6.9 m/s		+19

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

19 September, fri

	762 mmHg		80%
	6.8 m/s		+19

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

20 September, sat

	762 mmHg		80%
	6.5 m/s		+19

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

21 September, sun

	762 mmHg		78%
	6.2 m/s		+19

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

22 September, mon

	761 mmHg		81%
	6.8 m/s		+19

22 September, Monday. day, 20°; night, 17°; rain

23 September, tue

	761 mmHg		78%
	7.3 m/s		+19

23 September, Tuesday. day, 19°; night, 16°; rain

24 September, wed

	762 mmHg		77%
	6.5 m/s		+19

24 September, Wednesday. day, 19°; night, 15°; clear

25 September, thu

	762 mmHg		78%
	6.4 m/s		+19

25 September, Thursday. day, 19°; night, 15°; partly cloudy

26 September, fri

	762 mmHg		81%
	6.4 m/s		+18

26 September, Friday. day, 19°; night, 16°; overcast

27 September, sat

	761 mmHg		83%
	6.2 m/s		+18

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

28 September, sun

	760 mmHg		83%
	6.2 m/s		+18

28 September, Sunday. day, 19°; night, 16°; rain

29 September, mon

	760 mmHg		81%
	7.2 m/s		+18

29 September, Monday. day, 18°; night, 15°; rain

30 September, tue

	761 mmHg		78%
	6.9 m/s		+18

30 September, Tuesday. day, 17°; night, 14°; rain

1 October, wed

	761 mmHg		79%
	6.5 m/s		+18

1 October, Wednesday. day, 18°; night, 14°; rain

2 October, thu

	761 mmHg		79%
	6.4 m/s		+18

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

3 October, fri

	762 mmHg		78%
	6.4 m/s		+17

3 October, Friday. day, 18°; night, 14°; clear

4 October, sat

	763 mmHg		81%
	6.6 m/s		+17

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

Average data for 10 years

Barnstable September

10

sunny days

9

days with precipitation

7

cloudy days

10 sunny days; 9 days with precipitation; 7 cloudy days;

80

%

air humidity

4.5

m/s

WindS

97

mm of precipitation

(9% of annual average)

+19

°C

Water temperature

air humidity 80%; 97 millimeters of precipitation (9% of annual average); Wind southerly 4.5 Meters per second; Water temperature +19°

Weather graphs for September

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

S

SE

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

SE

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

New York
Boston
Islandia
Jamaica
Brookhaven
Lake George
Portland
Berlin
Albany

Cities with similar weather in September

San Francisco
Podgorica
Toronto
Vancouver
Genoa
Seattle
Montreal
Albena
San Sebastian

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

In September, the weather in Barnstable is typically warm. Average daily high temperature in September is about 20 degrees above zero. On average, Barnstable has 10 sunny, 9 rainy, 8 partly cloudy, and 3 cloudy days in September. The rains are usually heavy.

Links

Help Terms of use Contact us

For partners

Advertisement Yandex.Weather API

Weather forecasts

Hourly forecast Detailed 10 day forecast Monthly forecast Weather map Magnetic storms

Download app

English

English
Русский

Source data: Yandex.Traffic, Roshydromet FSBI "CAO", NOAA, © OpenStreetMap

© 2017–2025 YANDEX LLC