I have an UA 'Storm' hoodie that I wear when cycling. I've been caught in a few real downpours and remained dry on the inside. Apart from sweat that is. Being a hoodie it soaks sweat so for a 10k is great. It's not windproof so does let the wind through, actually a bonus as that is what keeps me cool.
My windproof jackets, although very thin, are very warm. They protect me when it's really exposed but not for everyday running.