I spent New Years at Tahoe, and went skiing for two days...not much snow, so I also went hiking. On New Years' Day, up to Andesite Peak (near Castle Peak, Donner Summit), then looping back via Castle Pass. On the 4th, to the summit of Mt. Rose.
Andesite Peak Conditions: carried my snow shoes but didn't need them, because trails were sufficiently packed down.
Mt. Rose Conditions: didn't carry snow shoes but did bring my hooded shell layer. It was warm until I got near the summit ridge, where there was a very cold stiff east wind. Trail was packed solid, stuff off the trail would have needed snowshoes as the snow seems to be sugar snow. If we get a big dump later in the year I'd worry about avalanche issues above, say, 9K feet.
Pics...
Castle Peak from trail:
Round Valley from Andesite Peak:
Castle Peak from Andesite:
And on Saturday...
Lake Tahoe from the beginning of the trail:
Frozen waterfall on Galena Creek:
Tahoe from Mt. Rose Summit:
Donner Lake, from Mt. Rose Summit:
Reno, from Mt. Rose Summit:
Mt. Rose, from Galena Creek: