Global climate change is creating challenges for agriculture today and will continue in the future. During the past 50 years in the US Cornbelt, average air temperatures have risen and rainfall has become more variable, including an increase in the total number of extreme rainfall events. These trends are expected to continue. Weather and weeds are two stressors that can act simultaneously to affect crop performance, yet their comprehensive study in tandem is limited. The webinar will discuss the most important relationships among weed control and weather variability on corn yield loss due to weeds.