I am also in western Washington, NE of Seattle, and I always prune around the last of March, but this year is so different so far, I am starting to prune now - there is getting to be a lot of new growth on the roses. Going by my photos of last year, our crocuses are blooming a good month earlier this year.

I pruned last weekend, but we typically prune Valentines Day around Houston. This year seems to be going early though, saw my first wild flowers yesterday and they usually don't happen until mid march.

I'm curious as to how damaging a short minor freeze can be. We seem to get several nights where temps drop into the upper 20s, but not for long. Our forecast in Dallas is 27 Sunday night. I'm hoping that 27 for a few hours wont hurt much, and I think that's what you may be looking at

(It's supposed to be 78 Saturday, so the plants are ignoring any freeze warning).

I also had growth on a lot of my roses. I did prune some climbers. Then we had an ice storm and it's going down to single digits tonight.......

I often start in January. It takes time, and sometimes if there is new growth it is frozen and needs to be cut off, but it takes time to cut, and dispose of the cuttings.