About Lightning in South Dakota
Located at approximately 44°N latitude, South Dakota is spanning the northern Great Plains from the Black Hills to the Missouri River, where summer cold fronts meet warm Gulf air to produce intense short-season thunderstorms. Thunderstorm frequency varies within state boundaries, so this page does not publish an unsupported statewide annual average or national rank.
In South Dakota, the dry line from the west clashes with warm Gulf moisture, creating conditions for severe supercell thunderstorms. Peak thunderstorm activity occurs during June through August, when conditions align for the most frequent lightning strikes. With a population of 0.9 million residents, storm awareness and lightning safety are important considerations for anyone living in or visiting South Dakota.