Dr. Joe Lauer, UW-Madison Agronomy and Extension State Corn Specialist
See this link for the latest weather summary for 2019 and the Normal (30 previous years – 1989 to 2018) at Arlington and Marshfield from April 1 to September 30.
You can also download graphs for the current year and other years at http://corn.agronomy.wisc.edu/Season/. Links to current and previous season weather summaries are located on the left of the web page.