I have semps in a lot of different conditions. I have them them in full shade, part sun and full sun. The ones in part shade seem to do the best. A few do really well in full sun. I think it depends on which one it is. Mine do get a lot of cold and get buried in snow for short periods. They don't do well with ice. They go over 100F in summer, but we are very dry here. No humidity to speak of. I have them in the ground, and in pots. So far there is no real difference between the ones in the ground and ones in pots. They all need very good drainage, just like a cactus.
They move easily, so I just move them if they don't look happy. There is a big difference in how they grow. Some grow so quickly and make a lot of pups and others just poke along having no pups. I've had some flower, but they flowered just a few months after I bought them. So far I haven't had any flower that I've had for a length of time. I really enjoy how they change colors with seasons.
I'm betting yours will do well this summer, Tiffany.