View daily and annual cooling degree days for Madison, Wisconsin, from 1869 to the present day, using combined data from the stations at the Madison city weather bureau office (January 1869–December 1946) and Dane County Regional Airport (January 1947–present). This chart shows the daily and total cooling degree days compared with the normal cooling degree days. The vertical lines and left axis represent the daily cooling degree days; the horizontal lines and right axis represent the seasonal total and normal cooling degree days.
Click and drag anywhere on the chart to zoom in on specific data points.
Download the complete record of cooling degree day data (CSV)