Tahoe has a good amount of winter climbing options. Depending on recent snowfall the east shore is the driest, warmest spot around the lake in winter. The Zephers, The Far Side and stuff around Incline Village is often climbable in mid winter. If the lake is a no go, try Doyle. It’s one hour north of Reno and it has a huge amount of great bouldering and vast potential for new climbs.