I'm with Janet and Suz - I'll wear denim at leat 5 times a week during fall, winter and spring, and hardly at all during the summer.
Having said that, I did find some lighter weight jeans at Target (thanks to Claire) that just *might* make the cut. They are much thinner than regular jeans and very comfortable (Mossimo Premium Flare jeans).
I will sometimes wear a denim pencil skirt in the summer, but truth be told - when it's approaching (or over) 100F, I don't even want denim shorts. If denim companies would come out with a lighter 'summer weight' denim, I'd wear more denim in the summer, but right now - as it stands - it's skirts, clam-length shorts and dresses all summer long in a *non* denim material.
The one exception is if I go back home for a visit (Vancouver BC) - I can easily wear denim in the summer there.
For the most part - I wear denim a lot, but not in the summertime.