Rise in Average Annual Temperatures (in Celsius) (2071-2100 as compared to 1971-2000): According to the MPI-M scenario, by the end of the current century, average annual temperatures will be about 3 degrees (Celsius) higher than they have been in recent decades. Southern Germany will see greater increases than northern Germany will. Seventy years from now, July and August in the south might even be four degrees higher than they are now.