15C (59F) is quite cool for summer in New York and a normal summer day in Rostock.
25C (77F) is a normal summer day in New York, and a really hot day in Rostock.
35C (95F) is a really hot day in New York, and hotter than it has ever been measured in Rostock.
45C (113F) is hotter than it has ever been measured in New York and would kill half of Rostock.
As I pack for a trip, I am forced to wonder not only what the weather will be like in New York, but if 35C in New York means the same thing to me now that I have been living in Rostock.