Over the years I've enjoyed some interesting (and occasionally good) October skiing in places that aren't easily accessible later in the winter: Heliotrope Ridge, Banshee Pk (above Summerland near the Cowlitz Chimn. - highly recommended if you can time conditions right), the Interglacier, etc.
With zero precip in the forecast, I decided to hit up my reliable snowpatch under Chair Pk above the Thumbtack. It was actually in better shape than I was expecting and I enjoyed a few laps on the slushy/dirty snow.
Fingers crossed for some snow!!