There were 11.7 percent fewer heating degree days in 2001 than the
normal and 6.3 percent fewer than in 2000. Sixteen of the last
eighteen winters have been warmer than the 1961 to 1990 30-year
weather normals. Since 1992, the ten year average has been 7,283
heating degree days, 6.7 percent fewer than the 30-year average.
Using cooling degree days as an index, the summer of 2001 was hot,
with 39 percent more cooling degree days than the 1961 to 1990 30-
year normal. Seventeen of the last nineteen summer have been warmer
than normal. Only the summers of 1992 and 1997 were cooler than
normal. Since 1992, the ten-year average has been 560 cooling degree
days, 24 percent above the 30-year normal.
Source contains two graphs: (1) Heating Degree Days 1970 - 2000; (2)
Cooling Degree Days 1980 - 2000.
Source: Wisconsin Divisions of Administration, Division of
Energy, "Wisconsin Energy Statistics - Highlights 2002", pg. 25.