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Rapid City weather in August

Weather in Rapid City: August


	Average day temperature:	84.1°F
	Average night temperature:	64.4°F

	Number of sunny days:	22 days
	Day length:	13.3 - 14.6 hours

	Number of rainy days:	1 day
	Precipitation totals:	0.5 in.

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14 days
forecast

Rapid City

weather in
September

Rapid City

January
February
March
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May
June
July
August

September
October
November
December

Show year:

2024

2023

2022

102

119

Day temperature

Night temperature

The highest day temperature during August of 2024 was 99°F. At the same time the lowest night temperature was 50°F. Daily and nightly averages during August were 82.9°F and 64.5°F.

	Sunny days
	Partly cloudy days
	Cloudy days

71%

23%

Mostly all days in August are sunny but cloudy days are also possible.

jan

feb

mar

apr

may

jun

jul

aug

sep

oct

nov

dec

0.0

0.2

0.4

0.7

0.9

1.1

1.3

1.5

1.3

1.1

1.3

1.1

Precipitation total value in Rapid City in August is 0.5 in. Other months of the year show relatively similar values.

jan

feb

mar

apr

may

jun

jul

aug

sep

oct

nov

dec

0.0

1.7

3.5

5.2

7.0

8.7

10.5

12.2

9.2

9.0

8.5

8.1

7.8

8.4

8.6

10.2

8.9

8.8

8.5

9.2

9.0

8.5

8.1

7.9

7.8

8.4

8.6

10.2

8.9

8.8

8.5

The average wind speed value in August is 7.9 mph It makes August one of the least windy months of the year.

jan

feb

mar

apr

may

jun

jul

aug

sep

oct

nov

dec

0.0

1.9

3.9

5.8

7.8

9.7

11.7

13.6

15.6

5.6

6.4

7.9

10.4

11.4

10.5

8.6

7.3

6.9

5.9

5.7

5.6

6.4

7.9

10.4

10.9

11.4

10.5

8.6

7.3

6.9

5.9

5.7

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in August is: 10.9.