We've been having daytime temperatures in the upper 40s for the last couple weeks but it looks like it will get significantly colder over the weekend:

A storm bearing a threat of snow and some of the coldest temperatures seen since 1990 is expected to arrive Saturday evening in the Seattle area and declare winter is here.

Any snow and ice will probably be limited to the outlying areas, which are generally at higher elevations. Monday's forecast calls for temperatures in the mid 20's. So, for the first time since we moved in, we might actually have to turn on our heater.