What in my pack is predicated on the weather, distance and high point, I always carry enough clothing to make it through night at the highest point in case of illness or injury. When I go for exercise...7 to 9 miles RT, to 8,300', I carry a very light small pack. Most of the weight is water and electrolytes.
When I go out in the winter my day pack can be in excess of 30 pounds on extremely cold days when I am carrying snowshoes, crampons, trekking poles and axe.
A date hike to Mt. Whitney during the summer can get a bit heavy because I will have rain gear, a few extra pieces of gear and enough clothing to survive a night on the summit.
Bulldog, your list is very similar to what I take out during the summer. The bandana thingy is a bit excessive for mostly humidity free SoCal...this weekend being an exception. Also, I stopped carrying an emergency blanket ages ago.
