For my upcoming trip in July I originally planned to have nothing more than a poncho and nylon windbreaker in the event of rain while on the move. After reading various inclement weather stories I decided the poncho might be O.K. for protecting the pack but not very effective for me, especially the lower half. With great reluctance I purchased a two piece cheapo clear vinly rain suit in case I find myself slogging thru rain coming at me sideways.
The poncho weighs 12 ounces; the hooded rain suit weighs 22.5 ounces; the windbreaker weighs 12 ounces. That's nearley 3 lbs devoted to wet weather protection. Too much!
There is no way I will part with the hooded windbreaker because it has other uses beside just keeping me dry. I'm thinking of putting it to a garden hose live test to see if it will keep me dry enough in driving rain. If it does then I can eliminate the top half of the rain suit and its 9 ounces. The poncho could be replaced with a Gregory rain cover for the pack (a Gregory Baltoro 70). This would yield a net loss of another 6 ounces since the cover weighs 6 oz. This would bring me down to about 2 lbs for wet weather protection provided the windbreaker is really that waterproof!! The heaviest piece is the rain suit pants at 13.5 ounces.
Are there other ways to approach this that I'm missing to hold down weight? I may not run into any rain at all but if I do it could become darned miserable if I'm not prepared. The comfort level of the Gregory is extraordinary compared to some other packs I tried and is designed to carry much heavier loads than my 35-lb target (including water) but it weighs 5-lbs itself.
I would be interested in what some of you veterans have found works best for lightweight rain gear protection without breaking the bank.