If you haven't seen anything like this year's weather, well, neither has anyone else.
This year is on track to set a temperature record that climate researchers say is unique since the first time stats were taken in 1900.
A typical year in the U.S. would see near-average temperatures or a spike in either extremely cold or extremely warm temperatures. But this is the first year in which both cold and warm temperatures have ranged far outside the norms, according to the National Climatic Data Center.