When we were there three weeks ago, there was 8-9' of base at elevation. They just got some fresh, and have more on the way. I would NOT worry about adequite snow depths for quite a while. The forecast for Lolo, Mt is always very warm all winter long. You see 50 + regularly even in February. The Lodge is at 4300' and there is never much snow around there. The forecast at that point is also never much for cold and snow. You really need to do a point forecast on noaa.gov to get an accurate weather forecast and the point needs to be 6000 feet atleast to get an idea of what is really "going down up top". The day the deep powder pics were taken, it was 40 degreed, and raining really hard at the lodge.
You will not see any real snow untill you get to the riding, so that can mess with your mind on the truck ride out, but have faith. There is snow in them there hills, and lots of it! In fact, some of the best snow depths in the Utah, Colorado, Montana, and Wyoming areas are precisely where you will be riding if you hit up lolo. When you get into northern Mondana, and Idaho, the gereral elevation of the mountans are always lower, but they get just as much snow as any of the higher terrain to the south.