Most years there is a transition after Feb. 15th that makes one realize that Seattle winter is over. When thoughts trend to the garden center, rather than the ski slopes. And for us, this shift will occur on Thursday through Saturday of this week. It is clear now that with the low developing offshore, southeasterly flow will bring warm air from the south and descent off the mountains. Temperatures will climb to between 55 and 60 over most of the lowlands, with Saturday probably being the warmest day over the Puget Sound lowlands. Some locations will be even warmer (low sixties...such as the Oregon coast and in the immediate lee of the Cascades. Just to give you a taste, I have attached surface temperatures from our regional model (12-km WRF), which shows the story. One image is for 2 PM on Friday, the other for 1 PM on Saturday.
On Sunday our luck runs out and showers and clouds move back in. But after the warmth, it won't seem the same. My grass is already growing.
If any of you are going to the garden show on Sunday, I will be there at the University Book Store area from 12 to 3 PM.