The list countries below are links to annual average temperature histories in chart form. Except as indicated, the charts were created from data downloaded from Data Economics. These charts show the average temperature for each country. While there are some gaps because of wars and other events, some histories start as far back as January 1819 and all have data up to December 2015, aspan of 196 years. Each chart contains a red trend line and the slope of that line which represents the rate of warming in degrees C per year.