Good idea Mike; original post edited.
Conditions are obviously difficult to estimate, but I'd say that lows in the upper teens and highs around 40-45 is a decent guess. It could be warmer, which wouldn't be ideal because the snow would turn to glop.
My assumption is we'll camp up the Dry Fork Valley the first night, and up near or at the pass into Monture the second. Depending on conditions there might be some dry ground in the Dry Fork, while the pass will surely have 8+ feet of snow by then.