Recent warming in Montana seems to have human fingerprints

The American West has warmed over the past century in a way that matches what scientists would expect from human-induced global warming.

Some studies have focused solely on Montana, and the story is the same. A 2008 article in the journal Science is one example.[[Barnett, Tim P., David W. Pierce, Hugo G. Hidalgo, Celine Bonfils, et al. “Human-Induced Changes in the Hydrology of the Western United States, 2008.” (Abstract) Science Vol. 319. no. 5866, February 2008 pp. 1080 - 1083.]]

Climate Central scientists, meanwhile, have converted data from climate models into animations that show how spring temperatures in Montana are projected to rise as the century proceeds. Specifically, the animations show that areas where the average March temperature remains above freezing are likely to expand.

As is the case for the West in general, the consequences of warming in Montana include  earlier snowmelt, longer fire seasons, more outbreaks of insects that harm forests, reduced streamflow and threats to fish habitat.