We have seen exactly ZERO snow in Reno this December. He have seen exactly ZERO rain in Reno this December. It doesn't look like that is going to change this week.
The only chance we have for any wet weather will be Friday. I would put those chances at about 10%. A storm will affect the pacific north-west but it doesn't look like it will make it far enough south to actually give Reno any sort of significant weather.