Temperature in South Dakota in December

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

South Dakota, the United States of America, a region in the United States of America, experiences maximum daytime temperatures in December ranging from -4°C (25°F) in Watertown to 3°C (37°F) in Hot Springs. Nighttime temperatures generally drop to -10°C (14°F) in Hot Springs and -13°C (9°F) in Watertown. During December, winter is in full swing.

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

Explore the map below to discover average December 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 December

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 December: blue is cold, red is hot.

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

South Dakota temperatures in December: frequently asked questions

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

Sioux Falls averages a daytime high of -2°C (28°F) in December, which is very low for South Dakota, the United States of America.

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

After dark, Sioux Falls cools to about -12°C (10°F) on an average December night.

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

Based on our systematic data collection, Hot Springs has been identified as the city with the highest average temperatures. The daytime temperature usually hovers around 3°C (37°F), while at night it goes down to an approximate temperature of -10°C (14°F).

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

For the month of December, Watertown is the most temperate city in South Dakota, the United States of America based on our records. Highs average -4°C (25°F) and nighttime temperatures dip to around -13°C (9°F).

Interested in more climate information?

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

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