Hi,
Our Family is traveling to Seattle from Sacramento Area for Thanksgiving (using I-5). We have done this drive before but NOT in the Fall/Winter time. Can anyone "guestimate" what the weather conditions will be like? I am worried because I have heard of ICY road conditions and snow and I have not driven in either climate. Would we need snow chains?

I know no one can predict weather conditions a month out, but I am just looking for trends and possible information on how it is to drive in such conditions.

Thanks for any insight!