I'm looking for annual mean temperature data for the city of Chicago for a large number of years, ideally over 100. I found this chart, which depicts the exact data I need from 1873 to 2011: http://www.climatestations.com/images/stories/chicago/chiann.gif which comes from this site: http://www.climatestations.com/chicago/ Unfortunately, the site only states that the raw data comes from here: http://www.nws.noaa.gov/climate/index.php?wfo=lot and provides no other information. I have been completely unable to find the raw data they say exists on the latter site. Does anyone have any ideas where I could find this raw data? All I have been able to find so far is a few pieces of data for 1998 or 1999 onwards, which isn't nearly enough.