With all the discussion about possible global warming, many people have wondered: What is the historical trend in Iowa's temperatures? This can be answered reasonably well for the past century. Temperature records since 1873 have been compiled by the State Climatological Office and its predecessors (National Climatic Center, 1990). For many years the State Climatologist published the average annual temperatures for the state as a whole, but that practice ceased in the early 1950s. Consequently, I have gone back over the records of the last 11 decades (from 1880 to 1989) and computed an average annual temperature for each year and then averaged them for each decade. I suspect the more recent temperatures are more reliable than those of the late nineteenth century, but I have used the records all the way back to 1880.
Iowa Science Teachers Journal
© Copyright 1991 by the Iowa Academy of Science
"Temperature Trends in Iowa,"
Iowa Science Teachers Journal: Vol. 28
, Article 6.
Available at: https://scholarworks.uni.edu/istj/vol28/iss2/6