South Dakota

South Dakota Weather in July

Average temperatures, rainfall, sunshine and the best places to visit in South Dakota, the United States of America in July.

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Sioux Falls Pierre Rapid City Deadwood

Thinking about venturing to South Dakota, the United States of America this July and curious about the weather conditions to expect? This page holds all the key information you seek, responding to your question:

What to Expect in South Dakota in July

South Dakota, the United States of America is a region in the United States of America. July in South Dakota generally has temperatures that range from warm to very warm, with moderate precipitation. The month of July is in the summer season.

Temperatures

During the day temperatures vary from warm in Lead at 27°C (81°F) to very warm in Pierre at 32°C (90°F). At night it cools down to 17°C (63°F) in Pierre and 13°C (55°F) in Lead. On average, July is the warmest month of the year in South Dakota, the United States of America. So be prepared and pack summer clothes.

To learn more about the conditions in specific areas of South Dakota, the United States of America, check out the map below.

Precipitation

In July, precipitation varies across different areas. From moderate rainfall in Belle Fourche with an average of 38 mm (1.5 in) to moderate rainfall in Vermillion with 85 mm (3.3 in).

Explore South Dakota by month

Pick a month to see the average temperature, rainfall and sunshine in South Dakota — and find the best time to visit. (based on Sioux Falls)

January-3°C (27°F) February-2°C (28°F) March7°C (45°F) April14°C (57°F) May21°C (70°F) June26°C (79°F) This monthJuly29°C (84°F) August28°C (82°F) September24°C (75°F) October16°C (61°F) November8°C (46°F) December-2°C (28°F)
Best Time to Visit South Dakota →

Best Places to Visit in South Dakota in July

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across South Dakota.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in South Dakota

What is the weather like in July for some of the most popular destinations in South Dakota, the United States of America?

Temperature range in South Dakota (July)

Precipitation variation in South Dakota (July)

Sioux Falls

In July Sioux Falls generally has high temperatures with maximum daytime temperatures around 29°C (84°F), minimum nighttime temperatures around 17°C (63°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

« June
July
August »
June
July
August
Max temperature
26°C (79°F)
29°C (84°F)
28°C (82°F)
Min temperature
14°C (57°F)
17°C (63°F)
16°C (61°F)
Monthly rainfall
124 mm (4.9 in)
80 mm (3.1 in)
94 mm (3.7 in)
Monthly rainy days
13 days
8 days
10 days
Weather conditions
pleasant
perfect
perfect
Climate in Sioux Falls →

Pierre

In July Pierre generally has very high temperatures with maximum daytime temperatures around 32°C (90°F), minimum nighttime temperatures around 17°C (63°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

« June
July
August »
June
July
August
Max temperature
27°C (81°F)
32°C (90°F)
30°C (86°F)
Min temperature
13°C (55°F)
17°C (63°F)
15°C (59°F)
Monthly rainfall
99 mm (3.9 in)
52 mm (2 in)
67 mm (2.6 in)
Monthly rainy days
12 days
9 days
9 days
Weather conditions
perfect
pleasant
pleasant
Climate in Pierre →

Rapid City

In July Rapid City generally has high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 16°C (61°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

« June
July
August »
June
July
August
Max temperature
25°C (77°F)
30°C (86°F)
29°C (84°F)
Min temperature
12°C (54°F)
16°C (61°F)
15°C (59°F)
Monthly rainfall
90 mm (3.5 in)
55 mm (2.2 in)
62 mm (2.4 in)
Monthly rainy days
13 days
11 days
10 days
Weather conditions
perfect
pleasant
perfect
Climate in Rapid City →

Deadwood

In July Deadwood generally has high temperatures with maximum daytime temperatures around 27°C (81°F), minimum nighttime temperatures around 14°C (57°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

« June
July
August »
June
July
August
Max temperature
23°C (73°F)
27°C (81°F)
26°C (79°F)
Min temperature
10°C (50°F)
14°C (57°F)
13°C (55°F)
Monthly rainfall
105 mm (4.1 in)
63 mm (2.5 in)
69 mm (2.7 in)
Monthly rainy days
14 days
12 days
11 days
Weather conditions
pleasant
perfect
perfect
Climate in Deadwood →

Custer

In July Custer generally has high temperatures with maximum daytime temperatures around 27°C (81°F), minimum nighttime temperatures around 12°C (54°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

« June
July
August »
June
July
August
Max temperature
22°C (72°F)
27°C (81°F)
26°C (79°F)
Min temperature
9°C (48°F)
12°C (54°F)
11°C (52°F)
Monthly rainfall
79 mm (3.1 in)
76 mm (3 in)
62 mm (2.4 in)
Monthly rainy days
14 days
13 days
14 days
Weather conditions
perfect
perfect
perfect
Climate in Custer →

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

In our records: the United States of America July extremes

Notable July records observed across cities in the United States of America in our climate database (1976 – 2026). Historic readings can vary in quality, so treat these as illustrative.

  • In our records, the warmest July day in the United States of America reached 51°C (124°F) in Palm Desert on July 28, 1995.

Popular cities in July

Day & night temperatures, rainfall and average weather in South Dakota in July.

City Weather Day temp Night temp Rainfall
Sioux Falls 29°C (84°F) 17°C (63°F) 80 mm (3.1 in)
Pierre 32°C (90°F) 17°C (63°F) 52 mm (2 in)
Rapid City 30°C (86°F) 16°C (61°F) 55 mm (2.2 in)
Deadwood 27°C (81°F) 14°C (57°F) 63 mm (2.5 in)
Custer 27°C (81°F) 12°C (54°F) 76 mm (3 in)
Hot Springs 32°C (90°F) 15°C (59°F) 65 mm (2.6 in)

South Dakota weather in July: frequently asked questions

What is the weather like in South Dakota, the United States of America in July?

In July, South Dakota, the United States of America generally has perfect weather conditions. Sioux Falls sees daytime temperatures near 29°C (84°F), with nights cooling to roughly 17°C (63°F).

What is the average temperature in South Dakota, the United States of America in July?

In Sioux Falls, the average daytime high in July is 29°C (84°F), while nighttime temperatures drop to around 17°C (63°F).

Does South Dakota, the United States of America get a lot of rain in July?

July is on the drier side in South Dakota, the United States of America. Sioux Falls averages only about 80 mm (3.1 in), with most days staying dry.

Is July a Good Time to Visit South Dakota, the United States of America?

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

Generally speaking, the best visiting conditions can be found in May, July, August and September offering mostly perfect weather in Sioux Falls. The weather in January, February, March and December, on the other hand, tends to be poor.

Interested in more climate information?

We have much more information about the climate in South Dakota.

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.

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