In terms of precipitation, rainfall in South Dakota ranges from 8.0 - 81.0 mm per month. May is typically the wettest month, when rainfall can reach 81.0 mm. January is typically the driest time to visit South Dakota when rainfall is around 8.0 mm.
If weather is an important factor for your trip to South Dakota, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -4.0 C).
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