The NOAA/NWS Winter Weather Outlook is available for viewing. This is a nice 3-minute video of the outlook for Winter 2016-2017. Portions of Montana are projected to have a wetter and cooler than normal winter.
NOAA's National Center for Environmental Information (NCEI), North Carolina State University’s Cooperative Institute for Climate and Satellites–North Carolina (CICS-NC), along with many cooperating partners in every state has released today a state by state assessment of climate change. Here is the Montana Climate Summary.
In 2017 Montana completed a detailed Climate assessment for Montana with a focus on agriculture, forestry, and water.
Here is a link to a presentation/course Kelsey Jencso gave on the Montana Climate Assessment through MSU Extended University: