Soooo when are you coming?

I'm EXTREMELY familiar with this drive as I do it many times a year, in fact I did it last weekend.

My DD23, Mom, and sisters all live in Fruitland & Payette ID, which is right next to Ontario OR.

In fact DD23 was BORN in Ontario! LOL

So ya, we did it last weekend, it was easy breezy, no problems at all, BUT there was no storm then and the roads were clear. We've also done it when the roads were snowy and we had to use chains. Also, driving thru the Owyhee's you might have to put chains on if it's snowy. It is a very easy drive tho, not much to worry about at all. I know some good places to stop if you need them, let me know. After Winnemucca, you get onto 80, again easy, unless it's snowy thru the Sierra's. We take 5 as well, I'm not as familiar with getting onto 5 in Sac (we live farther west) but it's not that hard to find and follow the signs. I do get onto 5 to get one of my best friends houses, she's right off 5 but the opposite direction you will be going.

Once you're on 5, again, easy peasy but if it's snowy over the Grapevine they will shut it down...no chains option for the GV, if it's "too bad" they just close it, if it's opened and snowy they will have a pace car and you will be driving really slooooooooowwwwww over the GV. lol
Again, if you have any other questions let me know, I'm happy to help and I'm very familiar with almost all of the drive you're thinking of doing.
Sorry, I just noticed you said next week......with snow tires I'm not sure what the restrictions will be...honestly people in CA don't really use those, unless they live in the mountains. I do know that even with 4wd and snow tires my Dad had to put chains on when we were kids (we lived an hour from Ontario up in the mountains) sometimes.