Best year time to visit South Dakota

General weather information about South Dakota

Average annual temperature is 9.3 °C

Absolute maximum temperature: 37.8 °C

Absolute minimum temperature: -30.5 °C

Number of sunny days: 241 days

Number of rainy days: 88 days

Number of snow days: 36 days

Look at detailed online map of South Dakota

* Weather data for South Dakota United States is based on climate observations for 2026 year

South Dakota air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)5.514.514.526.929.736.137.737.835.930.616.014.8
Average daytime temperature (°C)-1.92.33.110.524.128.829.829.926.115.38.84.6
Average temperature (°C)-6.3-4.8-3.24.017.623.023.523.720.110.03.4-0.1
Average night temperature (°C)-9.8-9.4-7.1-1.211.717.718.118.815.25.8-0.5-3.4
Absolute minimum temperature (°C)-22.6-30.5-16.6-13.9-0.313.212.914.110.5-7.2-9.4-10.3

South Dakota monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.011.012.014.015.015.015.014.013.011.010.09.0
Daylight mean duration (h)9.310.411.913.514.815.515.214.012.511.09.68.9
Daylight minimum duration (h)8.09.011.012.014.015.014.013.011.010.09.08.0
Sunshine mean duration (h)4.88.27.99.612.212.413.211.410.47.77.75.8
Precipitation (mm)12244737735229913361539
Sunny days202017191913202323182524
Rainy days3128121711871135
Snow days8712300000222

South Dakota - weather forecast by months

South Dakota weather in januarySouth Dakota weather in februarySouth Dakota weather in marchSouth Dakota weather in aprilSouth Dakota weather in maySouth Dakota weather in juneSouth Dakota weather in julySouth Dakota weather in augustSouth Dakota weather in septemberSouth Dakota weather in octoberSouth Dakota weather in novemberSouth Dakota weather in december

Best time to visit South Dakota:

The best time to visit South Dakota during the most sunny months:

  • May — 12.2(h)
  • June — 12.4(h)
  • July — 13.2(h)

Months with the longest average daylight duration in South Dakota:

  • June — 15.5(h)

The largest precipitation sum in South Dakota is at

  • May — 73(mm)
  • August — 91(mm)
  • October — 61(mm)

    • Weather forecast in the closest to South Dakota admin centers

    Weather forecast in the closest towns to South Dakota

    Explore South Dakota

    See also
    MapTrains schedule
    Plan your trip
    AccommodationExperiencesBlog

    Frequently asked questions

    When is the best time to visit South Dakota?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit South Dakota.
    What is the weather like in South Dakota?
    See average temperature, rainfall and daylight hours for South Dakota by month in the table above.
    How many sunny days does South Dakota have?
    The monthly weather statistics above show sunshine and rainfall patterns for South Dakota throughout the year.