Take a look at these;
http://glacierglove.com/I bought the Ice Bay glove from their fishing line several years back. All my other Winter gloves (and silk liners) sit on the shelf. Granted, it doesn't get as cold here in Florida, but wind chill has cut through everything I've ever tried. Except these. I've worn them in temps as low as 25 @ 80 mph.
An old timer at the local Army/Navy store saw me coming in on my bike one day and recommended them. He had them on the shelf for about $25. They're good for rain or cold and they pack small. I wear them under my summer mesh gloves just because I'd rather have leather exterior for protection.
They've developed a lot of new products since I got mine, so there may be another version that suits you better, but I'll stand behind their quality.