flowers that need shade but can handle afternoon heat
I have a spot that is shady in the morning and part of afternoon, but after 4 p.m. here is Colorado, it gets very hot. What kind of flowers can I get?
Sounds like you are looking for dry shade plants. Here is an article listing many such plants:
I do know that some of the varieties listed in this article such as vinca minor, snowdrops, bluebells and daffodils are appropriate for your planting zone.
In my research I also came across the "cleome" which is for your plant hardiness zone (4-11), shade tolerant and heat tolerant. For more information go here:
Here are some articles about shade tolerant plants: