A WINTER STORM WARNING is in effect for most of central and southern Montana, including the Rocky Mountain Front, Helena, and Great Falls.
The cold front moving through today will actually cause the afternoon temperatures to be lower than morning temperatures, which is usually not the case. Rain moving into northwestern Montana will gradually transition to snow as temperatures drop. Snowfall will continue overnight, so Wednesday morning will likely be a slippery and cold start.
Moisture should move out by Thursday as high pressure sets up over Montana. After that, temperatures will increase slightly through the end of the week.