Well, I would say that both tsuwm's NASA link and Faldage's summation are both somewhat misleading oversimplifications of climate. A place might have an average temperature of 40 degrees (scale or planet irrelevant), even over centuries or millennia, but a typical summer day might be 100 and a winter day -20. To think that 40 is somehow typical ("the climate") is a misapprehension.The usual temperature swings are part of the climate, not just the average.