Who’ll stop the rain? God. Izora Armstead, half of the hefty ’80s disco duo, the Weather Girls, died last month of heart failure in a San Leandro hospital, near San Francisco. The mother of 11, she was secretive about her age, but could have been 62 when she died. She and her singing partner, Martha Wash, started out as Two Tons o’ Fun because they were, um, fat but, after finding fame and fortune with hits like “It’s Raining Men” and “Big Girls Don’t Cry,” they trimmed down considerably. Armstead once said she got sick of “sewing two sheets together to make a costume.” Before the Texas-born-and-raised performer began singing, she had been a cabdriver and a bartender.