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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 -32.7°F–59.4°F, 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 70.2°F–74.7°F, 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 67.3°F–34.2°F, 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 -44.4°F–-37.9°F, 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. 48.2°F / Annual rainfall: approx. 524 mm / Summer humidity: 40%–60% / Rainiest month: May

South Dakota monthly average temperature and precipitation

Month
Air temperature (°F)
Precipitation (mm)
January
19.6°F
7.8
February
26.1°F
16.1
March
31.3°F
26.1
April
43.9°F
76.1
May
59.4°F
78.1
June
70.2°F
73.8
July
74.7°F
51
August
74.5°F
65.8
September
67.3°F
29.2
October
50.9°F
34
November
34.2°F
19.2
December
23.5°F
47.6

South Dakota weather for the next seven days

5/14
Thursday
Patchy rain nearby
82.4°F/59.2°F
5/15
Friday
Sunny
80.2°F/53.7°F
5/16
Saturday
Sunny
75°F/52°F
5/17
Sunday
Patchy rain nearby
68.4°F/55.1°F
5/18
Monday
Sunny
64.1°F/46.6°F
5/19
Tuesday
Sunny
65.2°F/45.2°F
5/20
Wednesday
Patchy rain nearby
54.7°F/44°F