Daily record highs are dramatically outpacing daily record lows in the U.S. in the last 20 years.
Here's where winters are warming the most across the U.S.
The Northern Plains, Great Lakes, and the Northeast are warming the fastest, while warming is taking place at a slower rate in the western U.S.
Watch how lake effect snow is expected to change in the coming decades.
Globally, 2017 is trending as the second hottest year on record, only behind 2016.
2017 is on track to be the third hottest year on record for the U.S.