On average, football season has been warming nationwide since the first Super Bowl.
Regardless if Punxsutawney Phil sees his shadow or not, spring is coming earlier across the U.S.
2015 was the hottest year on record by a wide margin.
It's official: 2015 was the hottest year on record. In fact, the top 10 hottest years have all happened since 1998.
The average number of very cold nights each year has declined across much of the country since 1970.
2015 was the 2nd hottest year on record for the U.S.
Record warm November continues the trend of a record hot 2015.
For most of the country, winter is warming faster than the other three seasons.