Programming a 3

I live in Ontario Canada close to Niagara Falls - of course my system work great last fall when I installed the controller as well as this spring . Now that the temps are hot and very sunny with little rain is when I expected this controller to shine . Not so - this yr. I went with the Flex Daily schedule . I did not change a thing from default until the last 2 weeks I chose 1 weather station closest to me . Same results . Is there a explanation with examples of all the options available in the program / advance settings to maximize The controller. Thank you