Temperature in South Dakota in May

Daytime highs, nighttime lows and the warmest cities in South Dakota, the United States of America this May.

South Dakota, the United States of America, a region in the United States of America, experiences maximum daytime temperatures in May ranging from 16°C (61°F) in Custer to 23°C (73°F) in Vermillion. Nighttime temperatures generally drop to 9°C (48°F) in Vermillion and 3°C (37°F) in Custer.

What is the temperature of the different cities in South Dakota, the United States of America in May?

Explore the map below to discover average May temperatures at the top destinations in South Dakota. For a deeper dive, simply click on any destination dot.

Select a Month

Check the conditions for any month of the year.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

For a detailed overview over the year and the best time to visit South Dakota, check out our South Dakota's climate page.

See also: South Dakota weather by month.

Best Places to Visit in South Dakota in May

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

Conditions Temperatures Precipitation
Avg daytime high -5°C (23°F) cold → 32°C (90°F) hot

Marker color shows the average daytime high temperature in May: blue is cold, red is hot.

See all May weather averages, cities and regions in South Dakota

South Dakota temperatures in May: frequently asked questions

How hot does it get in South Dakota, the United States of America in May?

Sioux Falls averages a daytime high of 21°C (70°F) in May, which is pleasant for South Dakota, the United States of America.

How cold does it get at night in South Dakota, the United States of America in May?

Sioux Falls sees nighttime lows close to 8°C (46°F) in May.

What is the warmest city in May in South Dakota, the United States of America?

According to our recent database analysis, Vermillion is the warmest city. It experiences an average maximum daytime temperature of approximately 23°C (73°F) and rarely drops below 9°C (48°F) during the night.

What is the coldest city in May in South Dakota, the United States of America?

For the month of May, Custer is the most temperate city in South Dakota, the United States of America based on our records. Highs average 16°C (61°F) and nighttime temperatures dip to around 3°C (37°F).

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.

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