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South Dakota

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South Dakota Weather and climate

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
10/14
Tuesday
Patchy rain nearby
12.9°C/7.3°C
10/15
Wednesday
Overcast
10.6°C/7°C
10/16
Thursday
Moderate rain
14.9°C/9°C
10/17
Friday
Sunny
20.5°C/9.5°C
10/18
Saturday
Sunny
16.7°C/8.8°C
10/19
Sunday
Sunny
15.3°C/5.7°C
10/20
Monday
Sunny
18.9°C/5.3°C