I've done somewhere around thirty BWCA trips. There are fond memories of waking up one fourth of July morning to find frozen water bottles. Last year I soloed in early August and experienced two or three nights of thirty degree temps. You can get cold spells up there almost any time of the year.
Only you can determine what amount of insulation you need but, for me, your plans sound a little on the light side.
"I go because it irons out the wrinkles in my soul." -- Sigurd Olson
Last edited by obxh2o; 01-06-2013 at 20:18..