The global annual temperature has increased at an average rate of 0.013°F per year in the last 140 years. If this trend continues and this month’s average high temperature in San Antonio is 96.3°, how hot will it be in 100 years?
Global surface temperature has been measured since 1880 at a network of ground-based and ocean-based sites. Over the last century, the average surface temperature of the Earth has increased by about 1.0o F.
