As we celebrate the 103rd birthday of the National Park Service, we examine the effect of climate change on our parks and update our earlier analysis of national park temperature trends.
Take a look at how cold nights have been trending for various cities across the U.S.
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.