Important:
“Temperatures from 1930-50 have been reduced by nearly a degree fahrenheit, while temperatures since 1970 have been adjusted up by up to a quarter of a degree. The total adjustment, with the pluses and minuses offsetting each other, is fairly small, but the change between 1930 and 2010 is significant.”
“Essentially the state temperatures now shown by NCDC are lower than the originally recorded ones, which are still available online.”
http://notalotofpeopleknowthat.wordpress.com/2012/06/08/ncdc-cooling-the-past-again/
sunshine hours 