There are only three medically significant spider genus in north america, and of those, one from each which is the least bit worrying. Fatality from "dangerous spider" bites is less than 10% of global cases, even untreated.
Here is where Loxosceles reclusa lives. If you don't live there, don't worry.
Here is where Loxosceles reclusa lives. If you don't live there, don't worry.