View daily and seasonal heating degree days for Madison, Wisconsin, from 1871 to the present day, using combined data from the stations at the Milwaukee weather bureau office (January 1871–February 1941) and Milwaukee Mitchell International Airport (March 1941–present). This chart shows the daily and total heating degree days compared with the normal heating degree days. The vertical lines and left axis represent the daily heating degree days; the horizontal lines and right axis represent the seasonal total and normal heating degree days.
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Download the complete record of heating degree day data (CSV)