From Butte, MT
Mar 26, 2013
I've never needed more than 3-season equipment in spring, summer, and fall in the Cascades and Olympics.
On several trips (June, July, September) I borrowed my Mother's lightweight kit and loved it. My partners and I were comfy in a BD Firstlight (I think), and 30°F Montbell Downhugger. If the forecast looks less than ideal, a nice dry double wall tent and 15°F synthetic is great.
My clothing selection is:
Lightweight soft shell pant
Jacket (hard or soft shell depending on weather)
Boots and gaiters
(or) approach shoes and plastic bags (the bags go underneath the crampon straps for short glacier crossings)