By looking at these temperatures we find that 2012 was 70.4 degrees over taking the 1936 record of 70.12 degrees. From 1891 until 1899 the average temperature was 62.06 degrees, 8.34 degrees cooler than 2012. The warmest year was 1894 when an average low temperature at night was 64.64 degrees, 5.82 degrees cooler than 2012. Because the planet was already warming by the 1890’s and deforestation had began in the 1830’s in Minnesota, it is estimated that the average low temperatures at night in Minnesota would have averaged approximately 60 degrees prior to mans wide spread alterations of the land. This would place the temperatures in Minnesota in 2012 over 10 degrees above its natural state today creating a rapid loss of ground water supplies.
As a result of this heat we have also seen a longer delay before enountering winter resulting in a longer growing season over recent years. In this graph we can see the first day that a 30 degree low temperature was attained.