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September weather forecast in Sumskiy Posad

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

	757 mmHg		76%
	6 m/s		+12

31 August, Sunday. day, 13°; night, 9°; clear

1 September, mon

	758 mmHg		75%
	6.9 m/s		+12

1 September, Monday. day, 13°; night, 10°; rain

2 September, tue

	758 mmHg		73%
	6.1 m/s		+12

2 September, Tuesday. day, 13°; night, 10°; partly cloudy

3 September, wed

	758 mmHg		74%
	6 m/s		+12

3 September, Wednesday. day, 13°; night, 9°; overcast

4 September, thu

	758 mmHg		74%
	5.9 m/s		+12

4 September, Thursday. day, 15°; night, 10°; partly cloudy

5 September, fri

	757 mmHg		75%
	5.8 m/s		+12

5 September, Friday. day, 15°; night, 10°; partly cloudy

6 September, sat

	756 mmHg		75%
	6.5 m/s		+12

6 September, Saturday. day, 15°; night, 10°; overcast

7 September, sun

	756 mmHg		79%
	5.5 m/s		+12

7 September, Sunday. day, 13°; night, 10°; rain

8 September, mon

	757 mmHg		81%
	5.3 m/s		+12

8 September, Monday. day, 13°; night, 10°; clear

9 September, tue

	761 mmHg		75%
	5.8 m/s		+12

9 September, Tuesday. day, 13°; night, 10°; partly cloudy

10 September, wed

	761 mmHg		77%
	5.3 m/s		+12

10 September, Wednesday. day, 13°; night, 9°; overcast

11 September, thu

	761 mmHg		80%
	5.3 m/s		+12

11 September, Thursday. day, 13°; night, 9°; overcast

12 September, fri

	759 mmHg		81%
	5.5 m/s		+11

12 September, Friday. day, 13°; night, 11°; overcast

13 September, sat

	757 mmHg		82%
	6.5 m/s		+11

13 September, Saturday. day, 13°; night, 9°; overcast

14 September, sun

	757 mmHg		81%
	5 m/s		+11

14 September, Sunday. day, 13°; night, 10°; rain

15 September, mon

	756 mmHg		83%
	5.6 m/s		+11

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

16 September, tue

	757 mmHg		81%
	5.4 m/s		+11

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

17 September, wed

	758 mmHg		81%
	6 m/s		+11

17 September, Wednesday. day, 11°; night, 9°; clear

18 September, thu

	758 mmHg		79%
	6.5 m/s		+11

18 September, Thursday. day, 11°; night, 9°; overcast

19 September, fri

	759 mmHg		81%
	6 m/s		+11

19 September, Friday. day, 12°; night, 8°; overcast

20 September, sat

	760 mmHg		81%
	5.3 m/s		+11

20 September, Saturday. day, 12°; night, 10°; overcast

21 September, sun

	759 mmHg		79%
	6.3 m/s		+11

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

22 September, mon

	757 mmHg		83%
	6.6 m/s		+11

22 September, Monday. day, 10°; night, 8°; rain

23 September, tue

	756 mmHg		83%
	7 m/s		+11

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

24 September, wed

	756 mmHg		87%
	7.3 m/s		+10

24 September, Wednesday. day, 10°; night, 8°; rain

25 September, thu

	759 mmHg		83%
	7.3 m/s		+10

25 September, Thursday. day, 9°; night, 7°; rain

26 September, fri

	759 mmHg		81%
	5.9 m/s		+10

26 September, Friday. day, 9°; night, 7°; rain

27 September, sat

	759 mmHg		82%
	6.3 m/s		+10

27 September, Saturday. day, 8°; night, 7°; overcast

28 September, sun

	755 mmHg		82%
	7 m/s		+10

28 September, Sunday. day, 8°; night, 7°; clear

29 September, mon

	754 mmHg		81%
	7.5 m/s		+10

29 September, Monday. day, 8°; night, 6°; rain

30 September, tue

	756 mmHg		81%
	6.5 m/s		+9

30 September, Tuesday. day, 7°; night, 6°; overcast

1 October, wed

	756 mmHg		81%
	6 m/s		+9

1 October, Wednesday. day, 7°; night, 5°; overcast

2 October, thu

	757 mmHg		85%
	6.5 m/s		+9

2 October, Thursday. day, 8°; night, 6°; overcast

3 October, fri

	756 mmHg		87%
	6.6 m/s		+9

3 October, Friday. day, 7°; night, 5°; rain

4 October, sat

	755 mmHg		85%
	6.9 m/s		+9

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

Average data for 10 years

Sumskiy Posad September

3

sunny days

12

days with precipitation

15

cloudy days

3 sunny days; 12 days with precipitation; 15 cloudy days;

80

%

air humidity

4.9

m/s

WindW

55

mm of precipitation

(9% of annual average)

+11

°C

Water temperature

air humidity 80%; 55 millimeters of precipitation (9% of annual average); Wind westerly 4.9 Meters per second; Water temperature +11°

Weather graphs for September

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

W

NW

SW

SW

S

SW

E

NW

W

W

SW

S

W

SW

SW

NW

W

SW

S

SW

SE

S

SW

NW

NW

SW

W

W

W

NW

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

Petrozavodsk
Kirovsk
Apatity
Solovki
Oshta
Podporozhye
Medvezhyegorsk
Segezha
Loukhi

Cities with similar weather in September

Saint Petersburg
Novosibirsk
Pskov
Cheboksary
Veliky Novgorod
Helsinki
Cherepovets
Tallinn
Rybinsk

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

In September, the weather in Sumskiy Posad is typically warm. Average daily high temperature in September is about 12 degrees above zero. On average, Sumskiy Posad has 12 rainy, 11 cloudy, 4 partly cloudy, and 3 sunny days in September. The rains are usually moderate. September as well as April and October is considered the most uncomfortable time to visit Sumskiy Posad.

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