The season and area in which trees are tapped to produce maple syrup is warming from climate change.
Global warming does not happen uniformly across every region, nor across every season.
The big picture is clear: Overall, fall is warming across the U.S, 0.46F per decade since 1970.
While every region of the country has seen a rise in winter temperatures since 1970, precipitation trends paint a more varied picture.
Since 1970, winters in the continental U.S. have warmed by 0.61°F per decade on average.