Hey everyone, I'm flying into Reno December 9th and was wondering about my chances, to cross Donner Pass/Truckee Pass using a rental, without snow chains?

No rental car company allows renting chains for a car that I know off, so while I would have liked to visit Lake Tahoe before crossing over into California; I don't know if that will be feasible in December.

Last year I visited Portland in the same time frame and it was dry and warm. No snow to be had anywhere down the West Coast. It felt like summer. Not sure if the weather will repeat itself this year. My back-up plan is to drive south to Vegas if I can't cross any of the passes.