The caterer is working on a menu with a Northwestern theme. We have an open-air pavilion where most folks will probably choose to sit at mealtime, but the breakfasts may prove bracing. We can accommodate a small number of requests for linens, towels, etc. But, we'd like to reserve our very limited supply for those with missing luggage, and there will be an additional fee. September in the Oregon Cascades can mean spectacularly clear days in the 70s or 50-degree drizzles.
Most folks do fine with jeans and a polarfleece jacket or sweater and windbreaker.
It can get into shorts-type weather in the afternoons. Basically, this is a time of year when it pays to layer. We will modify the field trips if the weather is nasty enough to require heavy rain gear. Those going on the pre-meeting float trip should plan on wearing clothing that dries fast and does not absorb much water. Polypro, wool, and nylon are good fabrics.