The Polaris Shield windproof jacket has been my trusty companion in the turbulent weather we've been having. It's a lot more waterproof than its name suggests, and it packs down nice and small.
It's pretty minimal; my scales report a mere 125 grams for the size large tested. You don't get any pockets, but there is a drawcord at the hem and the collar. You get thumb loops on the sleeves, which seem to come on most jackets of this type. They are pointless in my opinion, but others might find them useful.