I don't think 60 is too cold for peep toes, but I wear them year round, except when there's snow on the ground. Also, I sometimes pair them with textured tights or fishnets if I need some warmth.
I love the shape and it's perfect for that dress..
I were shoes like that all year round. It depends on the outfit and the occasion, obviously I wouldn't wear it to work or brunch with my girls in the winter. But for a wedding, Xmas party etc...why not?