I dive a drysuit year round, but I've got a buddy who's diving wet right now. It's in the low 60s until you hit the thermocline, which is around 70' down at the moment.Diving Lake Tahoe in a wetsuit sounds like absolute misery to me.
Often true, but definitely depends on the time of year. We bottom out at 39° around February and run to Monterey for warmer water. You'll pretty much always get into the low 40s at depth, even when it's nearly 70° on the surface.Most anywhere in Tahoe the OP would be diving will be similar temperatures to Monterey if not warmer.