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September weather forecast in Rapid City

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

1 September, sun

	668 mmHg		43%
	8.3 m/s

1 September, Sunday. day, 26°; night, 19°; clear

2 September, mon

	669 mmHg		40%
	6.6 m/s

2 September, Monday. day, 25°; night, 17°; clear

3 September, tue

	669 mmHg		41%
	6.8 m/s

3 September, Tuesday. day, 23°; night, 17°; clear

4 September, wed

	668 mmHg		44%
	6.3 m/s

4 September, Wednesday. day, 24°; night, 18°; clear

5 September, thu

	669 mmHg		46%
	6.1 m/s

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

6 September, fri

	669 mmHg		44%
	5.8 m/s

6 September, Friday. day, 23°; night, 16°; rain

7 September, sat

	669 mmHg		46%
	6 m/s

7 September, Saturday. day, 22°; night, 17°; rain

8 September, sun

	669 mmHg		44%
	6.4 m/s

8 September, Sunday. day, 22°; night, 16°; clear

9 September, mon

	670 mmHg		49%
	6.3 m/s

9 September, Monday. day, 21°; night, 16°; partly cloudy

10 September, tue

	671 mmHg		47%
	5.5 m/s

10 September, Tuesday. day, 21°; night, 16°; rain

11 September, wed

	670 mmHg		49%
	6.6 m/s

11 September, Wednesday. day, 21°; night, 15°; clear

12 September, thu

	669 mmHg		50%
	6.6 m/s

12 September, Thursday. day, 20°; night, 14°; clear

13 September, fri

	669 mmHg		56%
	6.5 m/s

13 September, Friday. day, 19°; night, 13°; clear

14 September, sat

	670 mmHg		58%
	7.1 m/s

14 September, Saturday. day, 18°; night, 13°; partly cloudy

15 September, sun

	669 mmHg		49%
	5.4 m/s

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

16 September, mon

	669 mmHg		46%
	6.6 m/s

16 September, Monday. day, 21°; night, 14°; partly cloudy

17 September, tue

	668 mmHg		43%
	7.3 m/s

17 September, Tuesday. day, 21°; night, 15°; clear

18 September, wed

	667 mmHg		40%
	7.3 m/s

18 September, Wednesday. day, 22°; night, 15°; clear

19 September, thu

	668 mmHg		36%
	8.1 m/s

19 September, Thursday. day, 22°; night, 15°; rain

20 September, fri

	668 mmHg		38%
	7.5 m/s

20 September, Friday. day, 21°; night, 15°; clear

21 September, sat

	667 mmHg		49%
	6.8 m/s

21 September, Saturday. day, 20°; night, 14°; clear

22 September, sun

	668 mmHg		58%
	6.1 m/s

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

23 September, mon

	670 mmHg		49%
	6 m/s

23 September, Monday. day, 19°; night, 14°; clear

24 September, tue

	669 mmHg		47%
	6.8 m/s

24 September, Tuesday. day, 20°; night, 15°; clear

25 September, wed

	668 mmHg		38%
	6.3 m/s

25 September, Wednesday. day, 23°; night, 17°; clear

26 September, thu

	669 mmHg		40%
	7.3 m/s

26 September, Thursday. day, 20°; night, 14°; clear

27 September, fri

	670 mmHg		46%
	6.5 m/s

27 September, Friday. day, 19°; night, 14°; partly cloudy

28 September, sat

	671 mmHg		50%
	7.1 m/s

28 September, Saturday. day, 18°; night, 13°; clear

29 September, sun

	667 mmHg		46%
	7 m/s

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

30 September, mon

	668 mmHg		47%
	7.8 m/s

30 September, Monday. day, 18°; night, 12°; clear

1 October, tue

	669 mmHg		50%
	7.5 m/s

1 October, Tuesday. day, 16°; night, 10°; clear

2 October, wed

	668 mmHg		51%
	6.8 m/s

2 October, Wednesday. day, 15°; night, 10°; clear

3 October, thu

	667 mmHg		63%
	7.8 m/s

3 October, Thursday. day, 14°; night, 10°; rain

4 October, fri

	667 mmHg		62%
	8.6 m/s

4 October, Friday. day, 13°; night, 9°; partly cloudy

5 October, sat

	667 mmHg		63%
	6.5 m/s

5 October, Saturday. day, 13°; night, 9°; rain

Average data for 10 years

Rapid City September

21

sunny days

5

days with precipitation

4

cloudy days

21 sunny days; 5 days with precipitation; 4 cloudy days;

46

%

air humidity

4.8

m/s

WindW

45

mm of precipitation

(7% of annual average)

air humidity 46%; 45 millimeters of precipitation (7% of annual average); Wind westerly 4.8 Meters per second

Weather graphs for September

TemperaturePrecipitation chance, %Humidity, %Wind, m/sPressure, mmHg

SW

NW

N

N

W

NE

N

NW

W

NW

N

SE

NW

SW

S

NE

SW

W

NW

NW

NW

N

NE

S

SW

NW

W

S

SW

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

Cheyenne
Pierre
Bismarck
Fort Collins
Miles City
Sidney
Gillette
Sheridan
Laramie

Cities with similar weather in September

Budapest
Toronto
Hévíz
Boston
Minneapolis
Colorado Springs
Milwaukee
Maribor
Buffalo

The weather forecast for September 2024 is based on historical data from the past 10 years.

September in Rapid City is the sunniest month of the year. In September, the weather in Rapid City is typically warm. Average daily high temperature in September is about 21 degrees above zero. On average, Rapid City has 21 sunny, 5 rainy, and 4 partly cloudy days in September. The rains are usually moderate. September as well as {{month_nom: February}}, and {{month_nom: February}} is considered the most comfortable time to visit Rapid City.

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