The station is currently owned by Midwest Radio Corp.[2] KWYR commenced its AM operation on September 27, 1957 from studios on the second floor of the Wally Laudenslager building at the corner of Second and Polk streets in Winner, SD.

In the summer of 1958 the station was purchased by a group of investors from Winner, South Dakota and the Black Hills, headed by Al Clark of Rapid City, who had been a radio-TV personality there for the previous ten years.

In the summer of 1967, the company celebrated its tenth anniversary by moving its transmitting facilities to its own 10-acre (40,000 m2) site, three miles (5 km) west on Highway 18 in Winner, South Dakota.

With a power of 100,000 watts, and broadcasting in stereo, KWYR gave South Dakota its first nighttime radio service.

On May 1, 2017 KWYR-FM changed their format from hot adult contemporary to a rock music mix, still branded as "Magic 93".