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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

12/19
Friday
Sunny
7.5°C/-10.4°C
12/20
Saturday
Partly Cloudy
5.5°C/-2.4°C
12/21
Sunday
Sunny
4.5°C/-4.2°C
12/22
Monday
Sunny
10.5°C/1.5°C
12/23
Tuesday
Sunny
2.5°C/-1.7°C
12/24
Wednesday
Partly Cloudy
7°C/-1.7°C
12/25
Thursday
Sunny
1°C/-3.8°C

South Dakota Frequently Asked Questions and Useful Information for Travel

What's the best month to visit South Dakota?

The best months to visit South Dakota are generally in the spring (May) and fall (September-October). These periods offer pleasant temperatures ideal for outdoor activities and viewing fall foliage, with fewer crowds than the peak summer season. Summer (June-August) is the busiest time with the most activities and longest daylight hours, but also brings larger crowds and the potential for hot, stormy weather.

Is there anything worth seeing in South Dakota?

South Dakota offers a wealth of attractions for all ages and interests. Iconic landmarks include Mount Rushmore National Memorial and Badlands National Park. You can also explore glacial lakes, engage in outdoor activities, discover historical and cultural sites, and enjoy vibrant cities or quiet country escapes.

What are the pros and cons of visiting South Dakota?

Visiting South Dakota offers the advantage of beautiful natural scenery, including the Black Hills and Badlands National Park, providing abundant outdoor recreation. The state is also known for having no state income tax and a generally lower cost of living compared to the national average. However, visitors should be aware of the potential for harsh winter weather and a more limited selection of major metropolitan areas.

How many days do you need to see South Dakota?

To see the main attractions like the Black Hills, Mount Rushmore, and Badlands National Park, you will need at least four to seven days in South Dakota. A shorter three-day trip can cover the highlights of the Black Hills and Badlands, while a longer stay allows for more in-depth exploration of the national parks, historic sites, and the state's natural beauty.

What are the must-see natural attractions in South Dakota?

South Dakota is renowned for its stunning natural landscapes. Key natural attractions include the dramatic formations of Badlands National Park, the majestic granite sculptures of Mount Rushmore National Memorial, and the scenic beauty of Custer State Park, which is home to diverse wildlife and winding scenic drives like the Needles Highway.