Here in CA I wear a full length capilene bra top and a long sleeve wool jersey. I've got one I bought specifically for running that has a hood and thumb holes. It's a fine line for me between being cold and overheating and wool seems to handle that. I sweat buckets no matter how cold it is. The hood and extra long sleeves are really nice for when I start out. I also try to wear something with a zipper so I can regulate air flow a bit.

I have my wool cycling jerseys that I'll wear if my running one is in the wash. I have one from Ground Effects with a Windstopper front that is very nice on windy days.

I wear a wool headband over my ears.

Veronica