South Dakota
-3 to 31°C
temperature
2923 hours
sunshine per day
344 mm
rain
209 days
dry
104 days
rain
52 days
snow

Climate of South Dakota

The state South Dakota has a continental climate. In the summer it is warm and wet, and in the winter it is cold and dry. The average annual temperature for South Dakota is 14° degrees and there is about 345 mm of rain in a year. It is dry for 201 days a year with an average humidity of 69% and an UV-index of 4.

Climate averages for the whole year

  • Day: the average daily temperature during the day is between -3°C and 31°C
  • Night:the average nighttime temperature is between -11°C and 19°C
  • Rain: it rains 104 days and there is a total of approximately 344 mm rainfall
  • Snow: it snows an average of 52 days per year
  • Sun hours: throughout the year there are 2923 sun hours
Maximum temperature: between -3°C and 31°C
Warmest month: 31°C in July
Coldest month: -3°C in January
Night temperature: between -11°C and 19°C
Dry days: 209 days
Days with rain: 104 days
Days with snow: 52 days
Total rain sum: 344 mm
Hours of sunshine: 2923 hours

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Temperature graph

This graph shows the average maximum temperature (red) and minimum temperature (blue) for South Dakota.

Precipitation graph

This graph shows the average amount of rainfall per month for South Dakota.

Climate table of South Dakota

In this climate table you can see at a glance what the average weather per month is for South Dakota. The data has been collected over a 30-year period, from which an average per month has been derived. From year to year the differences may be larger or smaller, but with this climate table you have a good idea of what the weather for South Dakota might be like in a given month.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Day temp. (°C) -3 -1 7 14 20 27 31 30 25 15 8 -2
Night temp. (°C) -11 -9 -2 4 10 16 19 18 13 6 -1 -9
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Precipitation (mm) 13 17 28 40 44 54 35 31 22 29 9 22
Days with rain 5 4 8 14 14 14 11 10 8 8 4 4
Days with snow 12 12 9 3 - - - - - 2 4 10
Dry days 14 12 14 13 17 16 20 21 22 21 22 17
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sun hours per day 5 6 7 8 10 11 12 12 9 7 6 5
Wind force (Bft) 3 3 3 3 3 3 3 3 3 3 3 3
UV-index 2 1 3 4 5 6 7 6 5 3 2 2

Best time to visit South Dakota

The best time to visit South Dakota in the United States is May through September. In this period you have a warm temperature and little precipitation. The highest average temperature in the state of South Dakota is 31°C in July and the lowest is-3°C in January.

Climate of South Dakota by month

What is the average climate in a given month for South Dakota? Click on a month to see all monthly averages for sunshine, maximum and minimum temperatures, percent chance of rain per day, snowfall and number of rainy days.

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