Anybody in and around Seattle or in NW Oregon , say @ Portland area or further north is or has been growing onion?

I have grown some onions in flat and potted already. Not in the ground yet. They are doing fine . Now they are trying to perk up and straighten up. My plan is to plant them mostly for green onions for use during the fall, early winter(?).

I want to know: WILL THEY OVER WINTER, like garlic around here ? If the do then the following season should grow bulbs(?)

Thanks in advance.