Wever is an unincorporated community in northeastern Lee County, Iowa, United States. It lies along U.S. Route 61 northeast of the city of Fort Madison, the county seat of Lee County. Its elevation is 561 feet (171 m). Although Wever is unincorporated, it has a post office, with the ZIP code of 52658, which opened on May 1, 1837. This post office has a complicated name history: it opened as Sand Ridge, changed to Green Bay on September 17, 1849, to Jollyville on January 28, 1859, and finally to Wever on October 17, 1870. The community is part of the Fort Madison–Keokuk, IA-MO Micropolitan Statistical Area.
Wever was a station on the Chicago, Burlington and Quincy Railroad.
In 2012, plans were announced to build a 1.2 billion dollar fertilizer plant in Wever. Its construction started in 2013.