Winter Weather Advisory for the Kalispell, Missoula, and Butte regions for accumulating snow Sunday afternoon through Monday morning. Valleys should expect 1 to 3 inches of snow with passes and mountain areas seeing 3 to 6 inches. Snow will impact Kalispell and Missoula in the late afternoon and spread to Southwest Montana during the evening. Lows will drop into the upper 20s.
We get a bit of a lull on Monday proper before another system arrives Monday night. Widespread snow is possible on Tuesday with highs in the upper 30s for the first couple days of the week and lows in the 20s and upper teens.
Warmer air lifts snow levels above valley floors for at least part of Wednesday but moisture remains overhead as warm air to the west and arctic air to the northeast begin to battle overhead. Between Thanksgiving Day and the weekend that arctic air will try to push into Western Montana after hovering around far Eastern Montana starting early Wednesday. There is quite a bit of uncertainty as to when this will actually happen. At this point, it appears that the Kalispell area will have a chance for snow on Thanksgiving while areas farther to the south will either see a rain-snow mix or just rain.