Drought and heat in 2012 lowered U.S. corn yields by more than 40 bushels per acre
The most severe and extensive drought in at least 25 years combined with high temperatures to seriously affect U.S. agriculture in 2012. Corn yields were the lowest since 1995, and the chart illustrates the impacts of drought and hot weather on 2012 corn yields. The 2012 season actually got off to a good start, with good weather initially permitting early planting of the corn crop, a typically beneficial factor that increased initial yield expectations for the crop. But then poor weather during the growing season hindered yields.