I try to install asphalt shingles, and especially roll roofing, on very warm days.( not too hot, the material doesn't like that). Less pleasant for me but better for the roof. I've had the experience of putting down roofing on a cold day, and then when warm weather came the material expanded and buckled, creating ridges and bumps and bubbles that wouldn't lay down flat again. I'd think a real professional roofer would know how to avoid that, but I don't know. Maybe someone else can tell you more.