Have you considered a 'textile' jacket like a Joe Rocket???
3 years ago, I was getting ready to ride up to Portland (4+ hour ride), in a real Oregon fall downpour. It was hammering!
My neighbor at my shop asks me what I'm gonna wear. "my leathers" I say. "Do you have a rainsuit", he asks. "No, but my leathers will be fine", I respond.
"DO NOT MOVE" he commands, and proceeds to drive all the way home and back bringing me his Nitro textile riding jacket and pants. "Now, wear this", he sais, "and you'll NEVER wear leathers again".
Now, I'm an old ex-outlaw hardcore saddletramp...and there ain't NO WAY I'd ever have worn something that made me look like a damn stormtrooper!!!
Well...to make a long story even longer....when I got to Portland, I literally...poured the water outta my boots (I still wore my old workboots)...but the rest of me was DRY, DRY, DRY!...which = warm! I waz blown away!
I now have 2 complete sets of leathers hanging in the back of my closet that I have not worn in nearly 3 years...skrew that stuff...these textile jackets and pants rock!
They've got the body armour in the back, the shoulders, the elbos, and the hips and knees are padded to kneel down on too. They have Velcro rain flys on all of the zippers, and have zip-out liners too. They have zip flys on them so you can route fresh air through them on hot days...And they are 100% WATERPROOF! I am completely sold on this gear, and will never wear leathers again.
oh...and this stuff is way CHEAPER than leathers too!!!
try this........http://www.newenough.com/closeouts/mesh_jackets_and_pants/first_gear/torrent_mesh_motorcycle_jacket.html
But...this is just my humble opinion is all!