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South Dakota

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South Dakota Weather, Climate and Best Time to Visit

Data source:Meteostat
Update date:2025-09

South Dakota year round climate

  • Spring (March–May): Average -0.4°C–15.2°C, the climate gradually changes from cold to mild, with increasing rainfall, most rainfall in May. Common activities: viewing spring flowers, outdoor hiking. Recommended clothing: warm jacket, sweater, comfortable trousers; in May, light jacket can be worn.
  • Summer (June–August): Average 21.2°C–23.7°C, warm and dry climate, occasional rainfall. Common activities: camping, fishing, hiking, visiting national parks. Recommended clothing: short-sleeved T-shirts, shorts, light and breathable clothing.
  • Autumn (September–November): Average 19.6°C–1.2°C, the climate changes from mild to cold, with decreasing rainfall. Common activities: viewing autumn leaves, outdoor activities (note that keeping warm is necessary). Recommended clothing: long-sleeved shirts, jackets, warm clothing.
  • Winter (December–February): Average -6.9°C–-3.3°C, cold and dry climate, more snowfall. Common activities: skiing, snow activities. Recommended clothing: heavy coat, hat, gloves, scarf, warm underwear.

South Dakota climatological average

Annual average temperature: approx. 9°C / Annual rainfall: approx. 524 mm / Summer humidity: 40%–60% / Rainiest month: May

South Dakota monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
-6.9°C
7.8
February
-3.3°C
16.1
March
-0.4°C
26.1
April
6.6°C
76.1
May
15.2°C
78.1
June
21.2°C
73.8
July
23.7°C
51
August
23.6°C
65.8
September
19.6°C
29.2
October
10.5°C
34
November
1.2°C
19.2
December
-4.7°C
47.6

South Dakota weather for the next seven days

12/20
Saturday
Sunny
5.8°C/-2.8°C
12/21
Sunday
Sunny
4.7°C/-5.4°C
12/22
Monday
Mist
1.8°C/-4.5°C
12/23
Tuesday
Partly Cloudy
5.3°C/0°C
12/24
Wednesday
Partly Cloudy
8.5°C/2.4°C
12/25
Thursday
Sunny
14.1°C/3.2°C
12/26
Friday
Overcast
-2.1°C/-6.1°C