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Weather in August in South Dakota

Are you planning a trip a to South Dakota in August and wondering what kind of weather to expect? This page has all the details you need.

What is the weather like in South Dakota in August?

South Dakota is a region in the United States of America. August in South Dakota generally has temperatures that range from warm to very warm, with precipitation levels ranging from moderate to high. August is a summer month.

Temperatures

The average highest temperatures fluctuate between warm in Lead at 26°C to very warm in Wall at 31°C. Nighttime temperatures generally drop to 15°C in Wall and 12°C in Lead.

Precipitation

In August, precipitation varies across different areas. From moderate rainfall in Belle Fourche with an average of 50 mm to high rainfall in North Sioux City with 103 mm.

For a closer look at August's conditions in South Dakota, see the map below. For a more detailed look at South Dakota's yearly weather, check out our South Dakota climate page.

Where to go in South Dakota in August

Find more information for the most popular destinations in the South Dakota on the map below. Click on a destination dot for more detailes.

Map not visible? Whoops sorry! Please refresh the page.
Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

Popular destinations

What is the weather like in August for the 5 most popular destinations in South Dakota?

Sioux Falls

In August Sioux Falls generally has high temperatures with maximum daytime temperatures around 28°C, minimum nighttime temperatures around 16°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Sioux Falls
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   July July
<<  
29°C 
17°C 
80 mm 
8 days 
28°C 
16°C 
94 mm 
10 days 
24°C 
10°C 
71 mm 
9 days 
Climate in Sioux Falls

Pierre

In August Pierre generally has very high temperatures with maximum daytime temperatures around 30°C, minimum nighttime temperatures around 15°C and moderate monthly rainfall. So on average the conditions are pleasant that month.

Pierre
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   July July
<<  
32°C 
17°C 
52 mm 
9 days 
30°C 
15°C 
67 mm 
9 days 
25°C 
10°C 
40 mm 
7 days 
Climate in Pierre

Rapid City

In August Rapid City generally has high temperatures with maximum daytime temperatures around 29°C, minimum nighttime temperatures around 15°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Rapid City
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   July July
<<  
30°C 
16°C 
55 mm 
11 days 
29°C 
15°C 
62 mm 
10 days 
24°C 
10°C 
36 mm 
6 days 
Climate in Rapid City

Deadwood

In August Deadwood generally has high temperatures with maximum daytime temperatures around 26°C, minimum nighttime temperatures around 13°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Deadwood
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   July July
<<  
27°C 
14°C 
63 mm 
12 days 
26°C 
13°C 
69 mm 
11 days 
22°C 
8°C 
47 mm 
8 days 
Climate in Deadwood

Custer

In August Custer generally has high temperatures with maximum daytime temperatures around 26°C, minimum nighttime temperatures around 11°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Custer
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   July July
<<  
27°C 
12°C 
76 mm 
13 days 
26°C 
11°C 
62 mm 
14 days 
22°C 
7°C 
41 mm 
8 days 
Climate in Custer

Is your destination not in the list? Have a look at other destinations in South Dakota, in the United States of America.

Is August the best time to visit South Dakota?

We consider August to be one of the best times to travel to South Dakota. Typically, the climate in Sioux Falls is perfect.

On average, the best time to visit South Dakota is in May, July, August and September with generally perfect weather in Sioux Falls. In contrast, January, February, March and December tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in South Dakota. Interested in the weather conditions in a specific month? Select the month below.

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  • Weather and climate has detailed information for every country in the world. Are you going to the United States of America? Get detailed historical weather averages for many cities in the United States of America.

    Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.