Average winter temperatures in New England have risen 4.4 degrees Fahrenheit since 1970.
Lakes in northern New England are thawing eight days earlier than they did in 1970.
There are 15 to 25 fewer days when snow is on the ground in New England, compared with 1970.
Lilacs bloom four to five days earlier than they did in 1965.
SOURCE: Cameron Wake, University of New Hampshire![]()
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