Armstead, who along with partner Martha Wash (search) started out as background singers for San Francisco disco diva Sylvester before forming the Weather Girls, died on Sept. 16 of heart failure at a hospital in San Leandro, about 20 miles east of San Francisco.
Armstead and Wash, who met when they sang in the same gospel group, were known as Two Tons O' Fun when they sang on four Sylvester Albums, including his No. 1 club hits, "Dance (Disco Heat)" and "(You Make Me Feel) Mighty Real."
After leaving Sylvester, they made three albums as the Weather Girls before splitting up. One of the albums, "Success," featured the 1983 song "It's Raining Men," which was a No. 1 dance club hit.