Recently, a group of collaborators and I gathered ice data from 43 lakes around the world going back 87 years, including Mohonk Lake in New Paltz. The study indicates how the ice season will be more and more variable in many lakes with one year having 2 months of ice and the next having no ice at all. Year-to-year variability will increase until the ice season shrinks to a month in length. From then on, the year-to-year variability gets smaller until the ice is lost, and winters are ice free.
The study was published in the flagship journal of the Association for the Science of Limnology and Oceanography: Limnology and Oceanography. See a link to the article here or a pdf [link] here.
Additionally, see the press release from SUNY New Paltz here [link].