When does it start getting chilly in Portland?

Breann • Mom of 3!
I'm due in late November and realized that the majority of my maternity clothes are summer clothes. I only have one pair of jeans and a pair of leggings for cold days and was wondering if it's worth investing in some maternity sweaters/pants for later in my pregnancy. This is our first year in Oregon and I really have no idea what to expect and when! (We're from Southern California, obviously not used to seasons! 😉) any advice would be super helpful. Thanks ladies!