The fall equinox was early on Sunday morning. Welcome to the first full week of fall. This week’s weather will involve a mix of late summer and early fall weather. Clouds blanketing Western Washington Monday morning are expected to give way to afternoon sunshine as higher pressure aloft builds over the region. High temperatures from the Puget Sound area south toward Portland are expected to rise above 70 degrees – close to this week’s average highs, while the north interior and the coastal regions will warm into the mid-60s, again near the average highs.