Not quite. From November to March of 1998-1999, we had 90 days, not consecutive, with some precipitation. For skiers, it was a bonanza. That was the winter Mt Baker set the world record (stealing it from Mt Rainier) with 95 feet of snow. Everywhere in the Cascades got a ton. Nonskiers were booking trips to Mexico and Hawaii like crazy, but I don't think anyone here was complaining.
One thing I will say to caution a person moving to Seattle right now--the housing crunch is no joke. It's gotten expensive here, and extremely competitive, if you want to live close-in. It sounds like they'll be making the $$ to deal with it, but they'll still have a lot of competition--tech salaries are high, and people have money to spend. Amazon's hiring 20,000 more people here in the next 3 years, and I don't know where they are going to fit. People that don't mind living in quieter corners of the city have more options.