maybe not, I've only lived in Vancouver BC Canada for 39 out of 41 years. :p
it has been warm and sunny until this last week, we finally got some rain [ one day ] and cooler temperatures.
I have seen it warm and sunny until late november, as well as cool and wet as early as beginning september. cold we don't really get until january.
recommended clothing to bring:
water resistant windbreaker, shoes that can be worn in the rain or on a hot sunny day.
if 10 C is cold to you, then warm clothing.
[ t-shirt temperature to most people ]
activities, specially for the kids, science world, with lots of hands on exhibits for the kids t play with, the planetarium [ anthopological museum as well as a bit about space ] and the maritime museum, the aquarium in Stanley Park, Granville Island Market [ large kids space area, marina for pleasure baots, grocery shopping as well as souvenir type shops, but not really a tourist trap ]
The Kite Shop on Water Street in Historic Gastown.
[ kites galore there :D ]
September, you might even be able to make one of the last trips on "The Royal Hudson" steam train to Whistler, a day trip.