If you need an interim solution until someone posts a suggestion for you, the $19.99 plastic rain jacket that can be ordered from performancebike.com (Item 10-0646) might help, at least for commuting or shorter rides. I’ve been so impressed with mine, originally bought for temporary use, that I now use it as my primary rain jacket. It’s well vented all along the bottom of the sleeves and along the sides, wipes clean with a sponge, and in my experience has held up very well. I’m gentle when opening the velcro closing however, as some people have reported problems with that. I think if you open the front carefully, however, it will hold up for several years. With a high collar and a long back apron, it has kept me dry in pouring rain. I like it so much that I’m thinking of getting another in case they ever get discontinued.
.
